Vertex model to represent an (optionally reactive) rating multi-Stream heat exchanger. More...

#include <MultiExchanger.h>

Inheritance diagram for MultiExchanger:

[legend]

Public Member Functions
	QUANTITY (Ts, "Solid temperature", 298.15, "K")

	QUANTITY (TsSet, "Solid temperature set value used when option is set to Ts", 298.15, "K")

	QUANTITY (A, "Heat transfer area", 10.0, "m2")

	QUANTITY (beta, "Fraction of deltaPmax when the pressure drop limitation logic will start acting", 0.9, "")

	QUANTITY (netDuty, "Heat losses", 0.0, "W")

	QUANTITY (totDuty, "Sum of heat transfer duties", 0.0, "W")

	QUANTITY (apparentDuty, "Duty from overall heat balance", 0.0, "W")

	QUANTITY (maxT, "Maximum allowable temperature at outlet", tmin, "K")

	QUANTITY (minT, "Minimum allowable temperature at outlet", tmax, "K")

	INTEGER (NITER_Exchanger, "Number of iterations", -1)

	STRING (option, "Calculation mode", "UA")
	Calculation mode. More...

	STRING (reactionOrder, "Order of Reaction conversion computation", "reactionsfirst")
	Order of Reaction conversion computation. More...

	STRING (MTDoption, "MTD calculation mode", "LMTD")
	MTD calculation mode: More...

	INTEGER (nStreams, "Number of stream couples connected", 0)

	INTEGER (nReactions, "Number of reactions", 0)

	INTEGER (nmultiReactions, "Number of multistream reactions", 0)

	INTEGER (nreactionEquilibriums, "Number of equilibrium reactions", 0)

	MultiExchanger (Libpf::Persistency::Defaults defaults, uint32_t id=0, Persistency persistency=nullptr, Persistent parent=nullptr, Persistent *root=nullptr)
	constructor for reactive MultiExchanger More...

	~MultiExchanger (void)

ObjectiveNleAd *	objectiveFunction (void) override
	returns a pointer to the model's objective function More...

void	initializeNonPersistents (void) override
	estimates hidden, non-persistent unknowns from the current results More...

void	calculate (int level=0) override

void	setup (void) override
	performs initializations required immediately before solution More...

void	go (Calculatable::SolutionMode solutionMode, int level) override

const std::string &	type (void) const override

int	calculateResidualsLocal (void) override
	compute residuals and store into local vector y_; must be provided by implementations More...

void	setup_of (void) override
	set up problem size, pick up objective functions, assemble unknownns, residuals and scalers list More...

SolverNleInterface *	solver (void)

Value	energyBalance (void) const override
	return should-be net energy balance of unit (inlet-outlet), defaults to zero and must be overridden if required More...

VertexBase::PortLocation	locationFromPort (std::string port) const override

Public Member Functions inherited from Connectivity
	Connectivity (Libpf::Persistency::Defaults defaults, uint32_t id=0, Persistency persistency=nullptr, Persistent parent=nullptr, Persistent *root=nullptr)

	~Connectivity (void)

	INTEGER (nIn, "Number of connected inlet EdgeBases", 0)
	should not be set directly: use attach instead More...

	INTEGER (nOut, "Number of connected outlet EdgeBases", 0)
	should not be set directly: use attach instead More...

	INTEGER (maxNIn, "Maximum number of connected inlet EdgeBases or -1 for unlimited", -1)

	INTEGER (maxNOut, "Maximum number of connected outlet EdgeBases or -1 for unlimited", -1)

	STRING (constraints, "Used internally to persist connectivity constraints", "")

void	attach (EdgeBase &edge, std::string &port) override final

void	detach (std::string port) override final
	Detaches the edge from the port with name "port". More...

bool	check (void) override

void	calculateBalance (void) override
	calculate cmdot, mdotin, mdotout, mdotcomps[] and cduty based on inlet/outlet streams More...

std::string	portInlet (int i) const

std::string	portOutlet (int i) const

bool	isInletConnected (unsigned int i) const

bool	isOutletConnected (unsigned int i) const

EdgeBase &	inlet (unsigned int i)

EdgeBase &	outlet (unsigned int i)

EdgeBase &	edgeFromPort (const std::string &port)

void	printConnectivity (void) const
	diagnostic print More...

Public Member Functions inherited from VertexBase
	VertexBase (Libpf::Persistency::Defaults defaults, uint32_t id=0, Persistency persistency=nullptr, Persistent parent=nullptr, Persistent *root=nullptr)

	QUANTITY (cmdot, "Cumulative mass flow inlet minus outlet", one, "kg/s")

	QUANTITY (mdotin, "inlet mass flow", one, "kg/s")

	QUANTITY (mdotout, "outlet mass flow", one, "kg/s")

	QUANTITY (cduty, "Cumulative enthalpy flow inlet minus outlet", one, "W")

virtual void	attach (EdgeBase &edge, std::string &port)

virtual void	detach (std::string port)
	Detaches the edge from the port with name "port". More...

virtual bool	check (void)=0
	Checks the connectivity for this instance of VertexBase and returns true if something is out of order. More...

void	translate (std::string &s)
	translates port name from user-friendly synonyms into the canonical form, or leaves unchanged More...

virtual void	checkBalance (void)
	call calculateBalance, then issue error/warning if required More...

virtual void	calculateBalance (void)=0
	calculate cmdot, mdotin, mdotout, mdotcomps[] and cduty based on inlet/outlet streams More...

virtual Value	massBalance (void) const
	return should-be net mass balance of unit (inlet-outlet), defaults to zero and must be overridden if required More...

virtual Value	energyBalance (void) const
	return should-be net energy balance of unit (inlet-outlet), defaults to zero and must be overridden if required More...

Libpf::Utility::Category	category (void) const override
	return model Category More...

void	printSvg (const char *fileName, bool tiny, bool raster, int offset) override

virtual PortLocation	locationFromPort (std::string port) const

PortLocation	locationFromEdge (std::string edgeTag) const

const std::string &	edgeFromPort (const std::string &port) const

const std::string &	portFromEdge (const std::string &edgeTag) const

Public Member Functions inherited from Model
	Model (Libpf::Persistency::Defaults defaults, uint32_t id, Persistency persistency, Persistent parent, Persistent *root)

	INTEGER (nCalculations, "Number of times the model has been calculated", 0)

	STRINGVECTOR (errors, "Errors from the last computation", 0, "")

	STRINGVECTOR (warnings, "Warnings from the last computation", 0, "")

bool	isPristine (void) const

void	unSetInput (void)
	wipes out all tags marked as inputs More...

void	reportMessages (void)
	recursively collect status of all sub-objects and report to parent More...

void	resetErrors (void)

void	setWarning (std::string s)
	send new warning message to local queue More...

void	setError (std::string s)
	send new error message to local queue More...

void	reportWarning (std::string s)
	propagate warning message from sub-object to local queue More...

void	reportError (std::string s)
	propagate error message from sub-object to local queue More...

void	setCalculated (void)
	increments nCalculations counter and unsets pristinity More...

void	setPristineRecursive (void)
	force next calculation to restart as if the model had never been calculated during this runtime session, also for all contained objects More...

void	setPristine (void)
	force next calculation to restart as if the model had never been calculated during this runtime session More...

void	setRunTime (double t)
	set the run time More...

virtual Libpf::Utility::Category	category (void) const =0
	return model Category More...

virtual void	calculate (int level=0)=0

virtual void	setup (void)=0
	performs initializations required immediately before solution More...

virtual int	maximumIterations (void)
	returns default maximum iterations for main computation; defaults to 200 More...

virtual void	initializeNonPersistents (void)=0
	estimates hidden, non-persistent unknowns from the current results More...

virtual ObjectiveNleAd *	objectiveFunction (void)=0
	returns a pointer to the model's objective function More...

std::ostream &	print (std::ostream &os, bool strings, bool quantities, bool integers, bool recursive) const

std::ostream &	printFull (std::ostream &) const
	print the model quantities, including derivative info, in text format to os More...

void	printHtml (const char *dir) const

virtual void	printSvg (const char *fileName, bool tiny, bool raster, int offset)

void	printSvgAll (const char *dir, bool tiny, bool raster, int offset, std::vector< std::string > &list)
	Recursively output the model and all descendants in SVG format as separate id.SVG files in the directory dir. More...

virtual void	printXml (const char dir, Model precedingSibling, Model *followingSibling) const

void	printXmlToc (std::ofstream &toc, int indent) const

void	printOds (std::ofstream &ods) const

Public Member Functions inherited from Object
	Object (Libpf::Persistency::Defaults defaults, uint32_t id=0, Persistency persistency=nullptr, Persistent parent=nullptr, Persistent *root=nullptr)

Libpf::Persistency::Defaults	defaults (void) const

std::ostream &	printJson (std::ostream &os, int level=0) const override
	print Node in JSON format More...

void	readVariables (Persistency *persistency) override
	reads Q, QV and QM from persistency More...

void	readParameters (Persistency *persistency) override
	reads I, IV, S and SV from persistency More...

Node &	operator= (const Node &) override
	copy assignment operator More...

Node &	operator= (Node &&other) override
	move assignment More...

	~Object (void)

const std::string &	type (void) const override

Object &	at (const std::string &fullRelativeTag)

const Object &	at (const std::string &fullRelativeTag) const

Object &	at (const std::string &fullRelativeTag, int index)

const Value &	Q (const std::string &tag) const

const Value &	Q (const std::string &tag, int index) const

const Value &	Q (const std::string &tag, int row, int column) const

Value &	Q (const std::string &tag)

Value &	Q (const std::string &tag, int index)

Value &	Q (const std::string &tag, int row, int column)

const Value &	Q (const std::string &tag, std::string componentName) const

Value &	Q (const std::string &tag, std::string componentName)

const Value &	Q (const std::string &tag, int index, std::string componentName) const

Value &	Q (const std::string &tag, int index, std::string componentName)

const int &	I (const std::string &tag) const

const int &	I (const std::string &tag, int index) const

int &	I (const std::string &tag)

int &	I (const std::string &tag, int index)

const std::string &	S (const std::string &tag) const

const std::string &	S (const std::string &tag, int index) const

std::string &	S (const std::string &tag)

std::string &	S (const std::string &tag, int index)

bool	operator!= (const Object &rhs) const

bool	operator== (const Object &rhs) const

bool	compareParameters (const Object &rhs) const

bool	existsI (const std::string &tag) const

bool	existsS (const std::string &tag) const

bool	existsQ (const std::string &tag) const

void	push (void) const
	store the current status of the object and all its sub-objects in the last-in-first-out queue of real variables values More...

void	pop (void)
	restore the status of the object and all its sub-objects from the last-in-first-out queue of real variables values More...

void	clear (void) const
	clear the last-in-first-out queue of real variables values used for storing and retrieving the status More...

const RangeQuantities	quantities (void)

const ConstRangeQuantities	quantities (void) const

Public Member Functions inherited from Node
	Node (Libpf::Persistency::Defaults defaults, uint32_t id=0, Persistency persistency=nullptr, Persistent parent=nullptr, Persistent *root=nullptr)

	Node (const Node &other)
	copy constructor More...

	Node (Node &&other)
	move constructor More...

virtual std::unique_ptr< Node >	clone (void) const

virtual Node &	operator= (const Node &other)
	copy assignment operator copies all elements but root which is set to nullptr More...

virtual Node &	operator= (Node &&other)
	move assignment More...

	~Node ()

int	insert (Persistency *persistency) const override

int	update (Persistency *persistency) const override

void	restore (Persistency *persistency) override

void	remove (Persistency *persistency) const override

uint32_t	rootId (void) const override

uint32_t	range (void) const override

uint32_t	getId (void) override
	returns the next available id and increments the internal counter More...

const std::string &	type (void) const override

virtual std::ostream &	printJson (std::ostream &os, int level=0) const
	print Node in JSON format More...

Node &	addChild (std::string type, uint32_t id, Persistency *persistency)

Node &	addChild (std::string type, Libpf::Persistency::Defaults defaults)

Node &	addChild (const Node &child)

Node &	addChild (std::unique_ptr< Node > child)

std::unique_ptr< Node >	prune (const std::string &tag)

const Node &	child (const std::string &tag) const

Node &	at (const std::string &fullRelativeTag)

const Node &	at (const std::string &fullRelativeTag) const

uint32_t	descendants (void) const

Persistent *	root (void) const

void	renameChild (const std::string &oldName, const std::string &newName)

bool	existsChild (std::string tag) const

bool	exists (uint32_t id)

Node &	search (uint32_t id)

bool	operator!= (const Node &rhs) const

bool	operator== (const Node &rhs) const

virtual void	readVariables (Persistency *)
	reads Q, QV and QM from persistency More...

virtual void	readParameters (Persistency *)
	reads I, IV, S and SV from persistency More...

bool	isRestored (void) const
	return whether the Node has just been retrieved from persistent storage More...

void	setIcon (std::string icon, double width, double height)

bool	hasIcon (void) const

std::string	iconName (bool raster) const

double	iconWidth (void) const

double	iconHeight (void) const

const Range	children (void)

const ConstRange	children (void) const

Public Member Functions inherited from Persistent
	Persistent (const std::string &tag, const std::string &description, Persistent *parent, uint32_t id)
	main constructor More...

	Persistent (const Persistent &)
	copy constructor More...

Persistent &	operator= (const Persistent &)
	copy assignment More...

	Persistent (Persistent &&other)
	move constructor More...

Persistent &	operator= (Persistent &&other)
	move assignment More...

	~Persistent (void)

uint32_t	id (void) const

std::string	uuid (void) const

uint32_t	parentId (void) const

virtual uint32_t	rootId (void) const =0

virtual uint32_t	range (void) const =0

virtual uint32_t	getId (void)=0
	returns the next available id and increments the internal counter More...

double	created_at (void) const

double	updated_at (void) const

void	updated_at (double u) const

virtual int	insert (Persistency *persistency) const =0

virtual int	update (Persistency *persistency) const =0

virtual void	restore (Persistency *persistency)=0

virtual void	remove (Persistency *persistency) const =0

Public Member Functions inherited from Item
	Item (const Item &other)
	copy constructor copies all elements but parent which is set to nullptr More...

Item &	operator= (const Item &other)
	copy assignment operator copies all elements but parent which is set to nullptr More...

	Item (const std::string &tag, const std::string &description, Persistent *parent)

	Item (Item &&other)
	move constructor More...

Item &	operator= (Item &&other)
	move assignment operator More...

virtual	~Item ()

const std::string &	tag () const

const std::string &	description () const

std::string	fullTag () const

const Persistent *	parent () const

virtual const std::string &	type () const =0

void	setTag (const std::string &tag)

void	setDescription (const std::string &description)

void	setWideTag (const std::wstring &tag)
	wide-character variant, More...

void	setWideDescription (const std::wstring &description)
	wide-character variant, More...

bool	operator!= (const Item &rhs) const

bool	operator== (const Item &rhs) const

Public Member Functions inherited from Diagnostic
	Diagnostic (void)

void	setVerbosity (int verbosity)
	sets the verbosity level for this instance More...

int	verbosity (void) const

Public Member Functions inherited from Task
	Task (void)

	~Task (void)

double	cost (void) const

int	level (void) const

int	core (void) const
	get the core where this task is scheduled or -1 if not yet scheduled More...

double	startTime (void) const
	return forecast start time More...

double	endTime (void) const
	return forecast end time More...

void	setLevel (int l)

void	setCore (int c)

double	setStartTime (double t)
	sets the start time and returns the end time More...

virtual void	go (SolutionMode solutionMode, int level)=0

Public Member Functions inherited from ObjectiveNleAdVertex
	ObjectiveNleAdVertex (std::string t)
	constructor More...

void	unscalex (double *x) override
	transforms back the vector of scaled variables x by applying the unscaling More...

int	calculateResiduals (std::vector< Value > &y, uint32_t offset) override

void	operator() (double , double , Jacobian *) override
	implements the () operator by calling calculateResidualsLocal and calculateResiduals; overrides ObjectiveNleAd::operator() More...

virtual int	calculateResidualsLocal (void)=0
	compute residuals and store into local vector y_; must be provided by implementations More...

virtual void	setup_of (void)=0
	setup and resize appropriately internal vectors; must be provided by implementations More...

Public Member Functions inherited from ObjectiveNleAd
	ObjectiveNleAd (std::string t)
	constructor More...

double	xmin (unsigned int i)
	return the lower bound on unknown i More...

double	xmax (unsigned int i)
	return the upper bound on unknown i More...

unsigned int	size (void) const override
	returns the current size of the problem More...

void	scalex (double *x) override
	transforms the vector of "real" variables x by applying the scaling More...

void	unscalex (double *x) override
	transforms back the vector of scaled variables x by applying the unscaling More...

void	operator() (double , double , Jacobian *J) override
	implements the () operator by calling calculateResiduals; derived class may override it More...

void	addUnknown (Value *x, Scaler scaler, const std::string &tag)

void	changeUnknown (unsigned int i, Value *x, Scaler scaler, const std::string &tag)
	change the i-th unknown More...

void	addObjectiveFunction (ObjectiveNleAd &of)
	append the remote objective function More...

Public Member Functions inherited from ObjectiveNleAuto
	ObjectiveNleAuto (std::string t)
	constructor More...

virtual unsigned int	size (void) const
	returns the current size of the problem More...

bool	init (double *x)

void	setValue (unsigned int i, double x)
	copies the value for the i-th unknown from x in the Value pointed to, without altering the derivatives More...

void	copyresults (double *x)
	copies the unknown values from the x vector into the Values pointed to More...

void	inactivate (void)
	inactivates all unknowns More...

void	clearderivatives (void)
	clears the derivative information for all unknowns without setting to inactive More...

void	setActive (unsigned int i)
	activates the i-th unknown More...

void	scalex (double *) override
	transforms the vector of "real" variables x by applying the scaling More...

void	unscalex (double *x) override
	transforms back the vector of scaled variables x by applying the unscaling More...

void	operator() (double , double , Jacobian *J) override
	implements the () operator by calling calculateResiduals; derived class may override it More...

void	setx (unsigned int i, Value &x)
	sets the i-th unknown to x More...

const Value &	unknown (unsigned int i) const
	returns a reference to the i-th unknown More...

const std::string &	unknownTag (unsigned int i) const
	returns a reference to the tag of the i-th unknown More...

double	xmin (unsigned int i)
	return the lower bound on unknown i More...

double	xmax (unsigned int i)
	return the upper bound on unknown i More...

void	print (void) const
	lists unknowns More...

const std::string &	tagof (void) const
	returns the tag of the instance More...

void	settagof (std::string t)
	sets the tag of the instance More...

void	appendtagof (const std::string &t)
	appends to the tag of the instance More...

int	zero_residuals (std::vector< Value > &y, uint32_t offset)

virtual int	calculateResiduals (std::vector< Value > &y, uint32_t offset)=0

void	addUnknown (Value *x, const std::string &tag)

void	changeUnknown (unsigned int i, Value *x, const std::string &tag)
	change the i-th unknown More...

Public Member Functions inherited from ObjectiveNleInterface
	ObjectiveNleInterface (void)

virtual void	operator() (double x, double y, Jacobian *J)=0
	computes the objective function vector y at the point x and optionally the Jacobian J More...

virtual void	scalex (double *x)=0
	transforms the vector of "real" variables x by applying the scaling More...

virtual void	unscalex (double *x)=0
	transforms back the vector of scaled variables x by applying the unscaling More...

Public Attributes
bool	isreactive_
	true if equilibrium reactions or fixed-V or fixed-I multiReactions change mass balances during iteration More...

std::vector< Quantity >	T
	Temperature of stream. More...

std::vector< Quantity >	P
	Pressure of stream. More...

std::vector< Quantity >	duty
	Heat transfer duty of stream, positive if stream gets cooled. More...

std::vector< Quantity >	Qoffset
	Duty offsets, should sum to zero. More...

std::vector< Quantity >	U
	Overall heat transfer coefficient. More...

std::vector< Quantity >	deltaT
	Temperature difference of stream. More...

std::vector< Quantity >	deltaP
	Pressure difference of stream. More...

std::vector< Quantity >	MTD
	Mean temperature difference of stream. More...

std::vector< Quantity >	inletApproach
	Temperature approach at inlet of stream. More...

std::vector< Quantity >	outletApproach
	Temperature approach at outlet of stream. More...

std::vector< Quantity >	hfluxin
	Heat flux inlet of stream. More...

std::vector< Quantity >	flowcoefficient
	Flow coefficient of stream. More...

std::vector< Quantity >	deltaPMax
	maximum allowable pressure drop of stream More...

std::vector< String >	pressureOption
	Pressure option: More...

std::vector< String >	embeddedTypeReactions
	type of the embedded reactions More...

std::vector< String >	embeddedTypemultiReactions
	type of the embedded multi-reactions More...

std::vector< Reaction * >	reactions
	reactions[] More...

std::vector< MultiReaction< 2 > * >	multiReactions
	multiReactions[] More...

std::vector< ReactionEquilibrium * >	reactionEquilibriums
	reactionEquilibriums[] More...

std::vector< Integer >	reactionSides
	heat exchange side the reactions are taking place More...

Public Attributes inherited from VertexBase
std::vector< Quantity >	mdotcomps
	Cumulative mass flow of each component, inlet - outlet. More...

Public Attributes inherited from Task
int	weight
	for backTrack_ and findCycles More...

Public Attributes inherited from ObjectiveNleInterface
int	verbosityLocal

Static Public Attributes
static const std::string	type_

Protected Attributes
std::vector< Stream * >	inletstreams_

std::vector< Stream * >	outletstreams_

Protected Attributes inherited from Connectivity
std::vector< EdgeBase * >	inlets_
	inlet EdgeBase pointer vector More...

std::vector< EdgeBase * >	outlets_
	outlet EdgeBase pointer vector More...

Protected Attributes inherited from Object
std::map< std::string, Integer * >	integers_
	collection of integer variables More...

std::map< std::string, IntegerVector * >	integerVectors_
	collection of integer variable vectors More...

std::map< std::string, Quantity * >	quantities_
	collection of real variables More...

std::map< std::string, QuantityVector * >	quantityVectors_
	collection of real variable vectors More...

std::map< std::string, QuantityMatrix * >	quantityMatrices_
	collection of real variable matrices More...

std::map< std::string, String * >	strings_
	collection of string variables More...

std::map< std::string, StringVector * >	stringVectors_
	collection of string variable vectors More...

Protected Attributes inherited from Node
std::map< std::string, std::unique_ptr< Node > >	children_
	the collection of direct descendants More...

Protected Attributes inherited from Item
Persistent *	parent_
	pointer to the parent Persistent; set to this by the constructor if Item is self-standing or a root Persistent of a tree More...

Protected Attributes inherited from Diagnostic
int	verbosityInstance

Protected Attributes inherited from ObjectiveNleAdVertex
bool	set_
	true if setup_of has already been called More...

Protected Attributes inherited from ObjectiveNleAd
std::vector< Scaler >	scaler_
	provide scaling and unscaling More...

Protected Attributes inherited from ObjectiveNleAuto
std::vector< Value >	residuals
	Residuals. More...

Additional Inherited Members
Public Types inherited from VertexBase
enum	PortLocation { north , south , east , west }

Public Types inherited from Calculatable
enum	SolutionMode { Null = 0 , sequential , simultaneous , singlePassSimultaneous }

Protected Member Functions inherited from Connectivity
void	inletRequired (unsigned int i)

Protected Member Functions inherited from VertexBase
void	registerSynonym (std::string synonym, std::string port)

void	clearBalance (void)
	used in calculateBalance, zeroes out the required variables More...

Protected Member Functions inherited from Model
void	printSvgXlink (std::ostream &svg, const std::string &link, double width, double height)

void	addComponentVectorVariable (std::vector< Quantity > &variable, const std::string &tag, const std::string &description, Quantity::ValueType value)

template<typename T >
void	addSubObjects (int verbosityFile, Libpf::Persistency::Defaults defaults, Persistency persistency, int count, const std::string &optionKey, const std::string &typeKey, const std::string &tagKey, const std::string &description, std::vector< T > &vector)

Protected Member Functions inherited from Object
int	retrieveInteger (const Libpf::Persistency::Defaults &defaults, uint32_t id, Persistency *persistency, std::string tag, int min, int max, int def=-1)

std::string	retrieveString (const Libpf::Persistency::Defaults &defaults, uint32_t id, Persistency *persistency, std::string tag, const std::string def)

template<class T >
void	addVariable (T &variable)

template<class T >
void	addVectorVariable (std::vector< T > &variable, const std::string &tag, const std::string &description, uint32_t size, typename T::ValueType value)

	Object (const Object &other)
	copy constructor More...

	Object (Object &&other)
	move constructor More...

Object &	operator= (const Object &)
	copy assignment operator More...

Object &	operator= (Object &&other)
	move assignment operator More...

Protected Member Functions inherited from Node
int	offset (void) const

Protected Member Functions inherited from Diagnostic
virtual	~Diagnostic ()=default

Protected Member Functions inherited from Calculatable
virtual	~Calculatable ()=default

Protected Member Functions inherited from ObjectiveNleAd
void	prepare_ (double x, Jacobian J) override
	uscales x (unknowns) values from calling function and puts them in x_ Quantities More...

void	packResults_ (double x, double y, Jacobian *J)

	~ObjectiveNleAd ()

Protected Member Functions inherited from ObjectiveNleAuto
	~ObjectiveNleAuto ()

Protected Member Functions inherited from ObjectiveNleInterface
	~ObjectiveNleInterface ()

Detailed Description

Vertex model to represent an (optionally reactive) rating multi-Stream heat exchanger.

Performs the iterative Qi = Ui * A * MTDi calculation unknowns are Ts, outletapproach[i], alfa[i], and possibly z[j] if equilibrium reactions take place

List of ports:

in inlet of each streamVL to MultiExchanger
out outlet of each streamVL from MultiExchanger

Options:

nReactions Number of reactions, valid range 0..INT_MAX, defaults to 0
nmultiReactions Number of multistream reactions, valid range 0..INT_MAX, defaults to 0
nStreams Number of stream couples connected, valid range 0..INT_MAX, defaults to 2

#include <libpf/units/MultiExchanger.h>

Remarks

Warning: Thread safe:; Extendable:; Platform dependencies:

Constructor & Destructor Documentation

◆ MultiExchanger()

MultiExchanger::MultiExchanger	(	Libpf::Persistency::Defaults	defaults,
		uint32_t	id = `0`,
		Persistency *	persistency = `nullptr`,
		Persistent *	parent = `nullptr`,
		Persistent *	root = `nullptr`
	)

constructor for reactive MultiExchanger

◆ ~MultiExchanger()

MultiExchanger::~MultiExchanger ( void )

Member Function Documentation

◆ calculate()

void MultiExchanger::calculate ( int level = 0 )

overridevirtual

calculates the model; implementations must call setCalculated

Parameters

level used for indenting, defaults to 0

Implements Model.

◆ calculateResidualsLocal()

int MultiExchanger::calculateResidualsLocal ( void )

overridevirtual

compute residuals and store into local vector y_; must be provided by implementations

Implements ObjectiveNleAdVertex.

◆ energyBalance()

Value MultiExchanger::energyBalance ( void ) const

overridevirtual

return should-be net energy balance of unit (inlet-outlet), defaults to zero and must be overridden if required

Reimplemented from VertexBase.

◆ go()

void MultiExchanger::go	(	Calculatable::SolutionMode	solutionMode,
		int	level
	)

overridevirtual

Calculate the Model

Parameters

solutionMode	solution mode to use
level	used for indenting

Implements Calculatable.

◆ initializeNonPersistents()

void MultiExchanger::initializeNonPersistents ( void )

overridevirtual

estimates hidden, non-persistent unknowns from the current results

Implements Model.

◆ INTEGER() [1/5]

MultiExchanger::INTEGER	(	NITER_Exchanger	,
		"Number of iterations"	,
		-	1
	)

◆ INTEGER() [2/5]

MultiExchanger::INTEGER	(	nmultiReactions	,
		"Number of multistream reactions"	,
		0
	)

◆ INTEGER() [3/5]

MultiExchanger::INTEGER	(	nreactionEquilibriums	,
		"Number of equilibrium reactions"	,
		0
	)

◆ INTEGER() [4/5]

MultiExchanger::INTEGER	(	nReactions	,
		"Number of reactions"	,
		0
	)

◆ INTEGER() [5/5]

MultiExchanger::INTEGER	(	nStreams	,
		"Number of stream couples connected"	,
		0
	)

◆ locationFromPort()

VertexBase::PortLocation MultiExchanger::locationFromPort ( std::string port ) const

overridevirtual

Returns: the port location for the SVG icon; can be overriden by deroved classes as required; the default implementation always returns west for inlets and east for outlets

Parameters

port	the name of the port (i.e. in1, out ...)

Remarks: this is independent from whether an edge is attached

See also: Layout

Reimplemented from VertexBase.

◆ objectiveFunction()

ObjectiveNleAd * MultiExchanger::objectiveFunction ( void )

inlineoverridevirtual

returns a pointer to the model's objective function

Implements Model.

◆ QUANTITY() [1/9]

MultiExchanger::QUANTITY	(	A	,
		"Heat transfer area"	,
		10.	0,
		"m2"
	)

◆ QUANTITY() [2/9]

MultiExchanger::QUANTITY	(	apparentDuty	,
		"Duty from overall heat balance"	,
		0.	0,
		"W"
	)

◆ QUANTITY() [3/9]

MultiExchanger::QUANTITY	(	beta	,
		"Fraction of deltaPmax when the pressure drop limitation logic will start acting"	,
		0.	9,
		""
	)

◆ QUANTITY() [4/9]

MultiExchanger::QUANTITY	(	maxT	,
		"Maximum allowable temperature at outlet"	,
		tmin	,
		"K"
	)

◆ QUANTITY() [5/9]

MultiExchanger::QUANTITY	(	minT	,
		"Minimum allowable temperature at outlet"	,
		tmax	,
		"K"
	)

◆ QUANTITY() [6/9]

MultiExchanger::QUANTITY	(	netDuty	,
		"Heat losses"	,
		0.	0,
		"W"
	)

◆ QUANTITY() [7/9]

MultiExchanger::QUANTITY	(	totDuty	,
		"Sum of heat transfer duties"	,
		0.	0,
		"W"
	)

◆ QUANTITY() [8/9]

MultiExchanger::QUANTITY	(	Ts	,
		"Solid temperature"	,
		298.	15,
		"K"
	)

◆ QUANTITY() [9/9]

MultiExchanger::QUANTITY	(	TsSet	,
		"Solid temperature set value used when option is set to Ts"	,
		298.	15,
		"K"
	)

◆ setup()

void MultiExchanger::setup ( void )

overridevirtual

performs initializations required immediately before solution

Implements Model.

◆ setup_of()

void MultiExchanger::setup_of ( void )

overridevirtual

set up problem size, pick up objective functions, assemble unknownns, residuals and scalers list

Implements ObjectiveNleAdVertex.

◆ solver()

SolverNleInterface * MultiExchanger::solver ( void )

◆ STRING() [1/3]

MultiExchanger::STRING	(	MTDoption	,
		"MTD calculation mode"	,
		"LMTD"
	)

MTD calculation mode:

linear plain linear average
linearClipped linear average clipped in case of temperature crossing
LMTD Logarithm Mean Temperature Difference
CSTR Uses outlet conditions

◆ STRING() [2/3]

MultiExchanger::STRING	(	option	,
		"Calculation mode"	,
		"UA"
	)

Calculation mode.

UA [default] assumes UA are fixed for each stream couple and Ts is unknown
Ts assumes Ts and UA for each stream couple are fixed

◆ STRING() [3/3]

MultiExchanger::STRING	(	reactionOrder	,
		"Order of Reaction conversion computation"	,
		"reactionsfirst"
	)

Order of Reaction conversion computation.

reactionsfirst [default] Reaction conversions are computed before multireaction conversions
multireactionfirst multireaction conversions are computed before Reaction conversions

◆ type()

const std::string & MultiExchanger::type ( void ) const

inlineoverridevirtual

Returns: the C++ name of the class the instance belongs to

Note: it is the responsibility of the caller to not access this reference after the lifecycle of the Item

Reimplemented from Object.

Member Data Documentation

◆ deltaP

std::vector<Quantity> MultiExchanger::deltaP

Pressure difference of stream.

◆ deltaPMax

std::vector<Quantity> MultiExchanger::deltaPMax

maximum allowable pressure drop of stream

◆ deltaT

std::vector<Quantity> MultiExchanger::deltaT

Temperature difference of stream.

◆ duty

std::vector<Quantity> MultiExchanger::duty

Heat transfer duty of stream, positive if stream gets cooled.

◆ embeddedTypemultiReactions

std::vector<String> MultiExchanger::embeddedTypemultiReactions

type of the embedded multi-reactions

◆ embeddedTypeReactions

std::vector<String> MultiExchanger::embeddedTypeReactions

type of the embedded reactions

◆ flowcoefficient

std::vector<Quantity> MultiExchanger::flowcoefficient

Flow coefficient of stream.

◆ hfluxin

std::vector<Quantity> MultiExchanger::hfluxin

Heat flux inlet of stream.

◆ inletApproach

std::vector<Quantity> MultiExchanger::inletApproach

Temperature approach at inlet of stream.

◆ inletstreams_

std::vector<Stream *> MultiExchanger::inletstreams_

protected

◆ isreactive_

bool MultiExchanger::isreactive_

true if equilibrium reactions or fixed-V or fixed-I multiReactions change mass balances during iteration

◆ MTD

std::vector<Quantity> MultiExchanger::MTD

Mean temperature difference of stream.

◆ multiReactions

std::vector<MultiReaction<2> *> MultiExchanger::multiReactions

multiReactions[]

◆ outletApproach

std::vector<Quantity> MultiExchanger::outletApproach

Temperature approach at outlet of stream.

◆ outletstreams_

std::vector<Stream *> MultiExchanger::outletstreams_

protected

◆ P

std::vector<Quantity> MultiExchanger::P

Pressure of stream.

◆ pressureOption

std::vector<String> MultiExchanger::pressureOption

Pressure option:

D assumes deltaPhot is fixed
P assumes the outlet pressure is fixed
K assumes the flowcoefficient is fixed

◆ Qoffset

std::vector<Quantity> MultiExchanger::Qoffset

Duty offsets, should sum to zero.

◆ reactionEquilibriums

std::vector<ReactionEquilibrium *> MultiExchanger::reactionEquilibriums

reactionEquilibriums[]

◆ reactions

std::vector<Reaction *> MultiExchanger::reactions

reactions[]

◆ reactionSides

std::vector<Integer> MultiExchanger::reactionSides

heat exchange side the reactions are taking place

◆ T

std::vector<Quantity> MultiExchanger::T

Temperature of stream.

◆ type_

const std::string MultiExchanger::type_

static

◆ U

std::vector<Quantity> MultiExchanger::U

Overall heat transfer coefficient.

The documentation for this class was generated from the following file:

MultiExchanger.h

Public Member Functions

Public Attributes

Static Public Attributes

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MultiExchanger()

◆ ~MultiExchanger()

Member Function Documentation

◆ calculate()

◆ calculateResidualsLocal()

◆ energyBalance()

◆ go()

◆ initializeNonPersistents()

◆ INTEGER() [1/5]

◆ INTEGER() [2/5]

◆ INTEGER() [3/5]

◆ INTEGER() [4/5]

◆ INTEGER() [5/5]

◆ locationFromPort()

◆ objectiveFunction()

◆ QUANTITY() [1/9]

◆ QUANTITY() [2/9]

◆ QUANTITY() [3/9]

◆ QUANTITY() [4/9]

◆ QUANTITY() [5/9]

◆ QUANTITY() [6/9]

◆ QUANTITY() [7/9]

◆ QUANTITY() [8/9]

◆ QUANTITY() [9/9]

◆ setup()

◆ setup_of()

◆ solver()

◆ STRING() [1/3]

◆ STRING() [2/3]

◆ STRING() [3/3]

◆ type()

Member Data Documentation

◆ deltaP

◆ deltaPMax

◆ deltaT

◆ duty

◆ embeddedTypemultiReactions

◆ embeddedTypeReactions

◆ flowcoefficient

◆ hfluxin

◆ inletApproach

◆ inletstreams_

◆ isreactive_

◆ MTD

◆ multiReactions

◆ outletApproach

◆ outletstreams_

◆ P

◆ pressureOption

◆ Qoffset

◆ reactionEquilibriums

◆ reactions

◆ reactionSides

◆ T

◆ type_

◆ U