Vertex model to represent countercurrent multicomponent mass transfer of dilute components in an absorber or a stripper. More...

#include <HtuNtu.h>

Inheritance diagram for HtuNtu:

[legend]

Public Member Functions
	QUANTITY (duty, "Heat duty", 0, "W")

	QUANTITY (deltaP, "Vapor phase pressure drop across unit", 0, "Pa")

	QUANTITY (D, "Column internal diameter", 1, "m")

	QUANTITY (H, "Packing height", 10, "m")

	QUANTITY (ap, "Specific packing surface area", 260, "1/m")

	QUANTITY (epsilon, "Porosity", 0.68, "")

	QUANTITY (CL, "Coefficient for calculation of mass trasfer in the liquid phase", 0, "")

	QUANTITY (CG, "Coefficient for calculation of mass trasfer in the gas phase", 0, "")

	QUANTITY (CS, "Coefficient for loading point calculation", 0, "")

	QUANTITY (CFl, "Coefficient for flooding point calculation", 0, "")

	QUANTITY (CP0, "Coefficient for pressure drop calculation", 0, "")

	QUANTITY (V, "Molar flow of gas", 0, "kmol/s")

	QUANTITY (L, "Molar flow of liquid", 0, "kmol/s")

	QUANTITY (T, "Temperature", 0, "K")

	QUANTITY (P, "Pressure", 0, "Pa")

	QUANTITY (rhov, "Density of gas", 0, "kg/m3")

	QUANTITY (rhol, "Density of liquid", 0, "kg/m3")

	QUANTITY (muv, "Viscosity of gas", 0, "Pa*s")

	QUANTITY (mul, "Viscosity of liquid", 0, "Pa*s")

	QUANTITY (psiS, "Resistance coefficient at the loading point", 0, "m/s2")

	QUANTITY (psiFl, "Resistance coefficient at the flooding point", 0, "m/s2")

	QUANTITY (Ac, "Column internal cross-sectional area", 0, "m2")

	QUANTITY (uV, "Gas superficial velocity", 0, "m/s")

	QUANTITY (uVS, "Gas superficial velocity at the loading point", 0, "m/s")

	QUANTITY (uVFl, "Gas superficial velocity at the flooding point", 0, "m/s")

	QUANTITY (uVzero, "Reference gas superficial velocity", 0, "m/s")

	QUANTITY (uL, "Liquid superficial velocity", 0, "m/s")

	QUANTITY (uLS, "Liquid superficial velocity at the loading point", 0, "m/s")

	QUANTITY (uLFl, "Liquid superficial velocity at the flooding point", 0, "m/s")

	QUANTITY (fractloadL, "Liquid load relative to loading point load", 0, "")

	QUANTITY (fractloadV, "Gas load relative to loading point load", 0, "")

	QUANTITY (fractfloodL, "Liquid load relative to flooding point load", 0, "")

	QUANTITY (fractfloodV, "Gas load relative to flooding point load", 0, "")

	QUANTITY (hL, "Volumetric column liquid hold-up", 0, "")

	QUANTITY (hLFl, "Volumetric column liquid hold-up at the flooding point", 0, "")

	QUANTITY (dh, "Hydraulic diameter of the dumped packing", 0, "m")

	QUANTITY (ReG, "Adimensional Reynolds number in the gas phase", 0, "")

	QUANTITY (ReL, "Adimensional Reynolds number in the liquid phase", 0, "")

	QUANTITY (FrL, "Adimensional Froude number in the liquid phase", 0, "")

	QUANTITY (WeL, "Adimensional Weber number in the liquid phase", 0, "")

	QUANTITY (ae, "Volumetric specific interface area between the phases", 0, "1/m")

	QUANTITY (K, "Pressure drop wall factor", 0, "")

	QUANTITY (ReGdp, "Adimensional Reynolds number in the gas phase for pressure drop calculation", 0, "")

	QUANTITY (psi0, "Resistance coefficient for dry pressure drop calculation", 0, "")

	QUANTITY (Fv2, "Square of flow factor", 0, "Pa")

	QUANTITY (dp, "Particle diameter", 0, "m")

	QUANTITY (deltaP0, "Pressure drop dry", 0, "Pa")

	QUANTITY (FrLdp, "Adimensional Froude number in the liquid phase for pressure drop calculation", 0, "")

	QUANTITY (psiL, "Resistance coefficient for irrigated pressure drop calculation", 0, "")

	QUANTITY (hLS, "Volumetric column liquid hold-up at the loading point", 0, "")

	INTEGER (NITER_load, "Number of iterations for loading point calculation", 0)

	INTEGER (NITER_flood, "Number of iterations for flooding point calculation", 0)

	INTEGER (startID, "First component to be separated", 3)

	STRING (packing, "Packing type", "Ceramic BerlSaddle 25")
	Packing type. More...

	STRING (hydraulics_calc, "Hydraulic calculation mode", "Rating")
	Hydraulic calculation mode. More...

	STRING (masstransfer_calc, "Mass trasfer calculation mode", "Rating")
	Mass trasfer calculation mode. More...

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

	~HtuNtu (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

bool	converged (void) const
	returns true if the unit has been solved successfully, 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 Attributes
Stream *	in1VL_

Stream *	in2VL_

std::vector< Quantity >	KVL
	Vector of KVL volatilities. More...

std::vector< Quantity >	Hcomps
	Packing height for component. More...

std::vector< Quantity >	outSplit [2]
	Split to vapor and liquid outlet for each component. 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...

Static Public Attributes
static const std::string	type_

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 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

Detailed Description

Vertex model to represent countercurrent multicomponent mass transfer of dilute components in an absorber or a stripper.

Modeling assumptions:

gas phase is mosty air
The HTU/NTU model is used for the computation
Isothermal conditions hold along the column
linear Vapor/liquid behavior of all trasferrable components (Herly law or constant KVL)
neglects variation of liquid and gas molar flows along the packing (CMO constant molar overflow)
neglects effect on bulk properties of solvent due to disoolved components
the mass each trasfer of each component is independent on the trasfer of the others
no Reaction with solvent

List of ports:

in1 [vapin] inlet of vapor streamVL to HtuNtu
out1 [vapout] outlet of vapor streamVL from HtuNtu
in2 [liqin] inlet of liquid streamVL to HtuNtu
out2 [liqout] outlet of liquid streamVL from HtuNtu

#include <libpf/units/HtuNtu.h>

Remarks

Warning: Requires the list of components to be populated before the construction; Thread safe:; Extendable:; Platform dependencies:

Constructor & Destructor Documentation

◆ HtuNtu()

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

◆ ~HtuNtu()

HtuNtu::~HtuNtu ( void )

Member Function Documentation

◆ calculate()

void HtuNtu::calculate ( int level = 0 )

overridevirtual

calculates the model; implementations must call setCalculated

Parameters

level used for indenting, defaults to 0

Implements Model.

◆ converged()

bool HtuNtu::converged ( void ) const

returns true if the unit has been solved successfully,

See also: SolverNleInterface::nonConverged

◆ go()

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

overridevirtual

Calculate the Model

Parameters

solutionMode	solution mode to use
level	used for indenting

Implements Calculatable.

◆ initializeNonPersistents()

void HtuNtu::initializeNonPersistents ( void )

inlineoverridevirtual

estimates hidden, non-persistent unknowns from the current results

Implements Model.

◆ INTEGER() [1/3]

HtuNtu::INTEGER	(	NITER_flood	,
		"Number of iterations for flooding point calculation"	,
		0
	)

◆ INTEGER() [2/3]

HtuNtu::INTEGER	(	NITER_load	,
		"Number of iterations for loading point calculation"	,
		0
	)

◆ INTEGER() [3/3]

HtuNtu::INTEGER	(	startID	,
		"First component to be separated"	,
		3
	)

◆ locationFromPort()

VertexBase::PortLocation HtuNtu::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 * HtuNtu::objectiveFunction ( void )

inlineoverridevirtual

returns a pointer to the model's objective function

Implements Model.

◆ QUANTITY() [1/50]

HtuNtu::QUANTITY	(	Ac	,
		"Column internal cross-sectional area"	,
		0	,
		"m2"
	)

◆ QUANTITY() [2/50]

HtuNtu::QUANTITY	(	ae	,
		"Volumetric specific interface area between the phases"	,
		0	,
		"1/m"
	)

◆ QUANTITY() [3/50]

HtuNtu::QUANTITY	(	ap	,
		"Specific packing surface area"	,
		260	,
		"1/m"
	)

◆ QUANTITY() [4/50]

HtuNtu::QUANTITY	(	CFl	,
		"Coefficient for flooding point calculation"	,
		0	,
		""
	)

◆ QUANTITY() [5/50]

HtuNtu::QUANTITY	(	CG	,
		"Coefficient for calculation of mass trasfer in the gas phase"	,
		0	,
		""
	)

◆ QUANTITY() [6/50]

HtuNtu::QUANTITY	(	CL	,
		"Coefficient for calculation of mass trasfer in the liquid phase"	,
		0	,
		""
	)

◆ QUANTITY() [7/50]

HtuNtu::QUANTITY	(	CP0	,
		"Coefficient for pressure drop calculation"	,
		0	,
		""
	)

◆ QUANTITY() [8/50]

HtuNtu::QUANTITY	(	CS	,
		"Coefficient for loading point calculation"	,
		0	,
		""
	)

◆ QUANTITY() [9/50]

HtuNtu::QUANTITY	(	D	,
		"Column internal diameter"	,
		1	,
		"m"
	)

◆ QUANTITY() [10/50]

HtuNtu::QUANTITY	(	deltaP	,
		"Vapor phase pressure drop across unit"	,
		0	,
		"Pa"
	)

◆ QUANTITY() [11/50]

HtuNtu::QUANTITY	(	deltaP0	,
		"Pressure drop dry"	,
		0	,
		"Pa"
	)

◆ QUANTITY() [12/50]

HtuNtu::QUANTITY	(	dh	,
		"Hydraulic diameter of the dumped packing"	,
		0	,
		"m"
	)

◆ QUANTITY() [13/50]

HtuNtu::QUANTITY	(	dp	,
		"Particle diameter"	,
		0	,
		"m"
	)

◆ QUANTITY() [14/50]

HtuNtu::QUANTITY	(	duty	,
		"Heat duty"	,
		0	,
		"W"
	)

◆ QUANTITY() [15/50]

HtuNtu::QUANTITY	(	epsilon	,
		"Porosity"	,
		0.	68,
		""
	)

◆ QUANTITY() [16/50]

HtuNtu::QUANTITY	(	fractfloodL	,
		"Liquid load relative to flooding point load"	,
		0	,
		""
	)

◆ QUANTITY() [17/50]

HtuNtu::QUANTITY	(	fractfloodV	,
		"Gas load relative to flooding point load"	,
		0	,
		""
	)

◆ QUANTITY() [18/50]

HtuNtu::QUANTITY	(	fractloadL	,
		"Liquid load relative to loading point load"	,
		0	,
		""
	)

◆ QUANTITY() [19/50]

HtuNtu::QUANTITY	(	fractloadV	,
		"Gas load relative to loading point load"	,
		0	,
		""
	)

◆ QUANTITY() [20/50]

HtuNtu::QUANTITY	(	FrL	,
		"Adimensional Froude number in the liquid phase"	,
		0	,
		""
	)

◆ QUANTITY() [21/50]

HtuNtu::QUANTITY	(	FrLdp	,
		"Adimensional Froude number in the liquid phase for pressure drop calculation"	,
		0	,
		""
	)

◆ QUANTITY() [22/50]

HtuNtu::QUANTITY	(	Fv2	,
		"Square of flow factor"	,
		0	,
		"Pa"
	)

◆ QUANTITY() [23/50]

HtuNtu::QUANTITY	(	H	,
		"Packing height"	,
		10	,
		"m"
	)

◆ QUANTITY() [24/50]

HtuNtu::QUANTITY	(	hL	,
		"Volumetric column liquid hold-up"	,
		0	,
		""
	)

◆ QUANTITY() [25/50]

HtuNtu::QUANTITY	(	hLFl	,
		"Volumetric column liquid hold-up at the flooding point"	,
		0	,
		""
	)

◆ QUANTITY() [26/50]

HtuNtu::QUANTITY	(	hLS	,
		"Volumetric column liquid hold-up at the loading point"	,
		0	,
		""
	)

◆ QUANTITY() [27/50]

HtuNtu::QUANTITY	(	K	,
		"Pressure drop wall factor"	,
		0	,
		""
	)

◆ QUANTITY() [28/50]

HtuNtu::QUANTITY	(	L	,
		"Molar flow of liquid"	,
		0	,
		"kmol/s"
	)

◆ QUANTITY() [29/50]

HtuNtu::QUANTITY	(	mul	,
		"Viscosity of liquid"	,
		0	,
		"Pa*s"
	)

◆ QUANTITY() [30/50]

HtuNtu::QUANTITY	(	muv	,
		"Viscosity of gas"	,
		0	,
		"Pa*s"
	)

◆ QUANTITY() [31/50]

HtuNtu::QUANTITY	(	P	,
		"Pressure"	,
		0	,
		"Pa"
	)

◆ QUANTITY() [32/50]

HtuNtu::QUANTITY	(	psi0	,
		"Resistance coefficient for dry pressure drop calculation"	,
		0	,
		""
	)

◆ QUANTITY() [33/50]

HtuNtu::QUANTITY	(	psiFl	,
		"Resistance coefficient at the flooding point"	,
		0	,
		"m/s2"
	)

◆ QUANTITY() [34/50]

HtuNtu::QUANTITY	(	psiL	,
		"Resistance coefficient for irrigated pressure drop calculation"	,
		0	,
		""
	)

◆ QUANTITY() [35/50]

HtuNtu::QUANTITY	(	psiS	,
		"Resistance coefficient at the loading point"	,
		0	,
		"m/s2"
	)

◆ QUANTITY() [36/50]

HtuNtu::QUANTITY	(	ReG	,
		"Adimensional Reynolds number in the gas phase"	,
		0	,
		""
	)

◆ QUANTITY() [37/50]

HtuNtu::QUANTITY	(	ReGdp	,
		"Adimensional Reynolds number in the gas phase for pressure drop calculation"	,
		0	,
		""
	)

◆ QUANTITY() [38/50]

HtuNtu::QUANTITY	(	ReL	,
		"Adimensional Reynolds number in the liquid phase"	,
		0	,
		""
	)

◆ QUANTITY() [39/50]

HtuNtu::QUANTITY	(	rhol	,
		"Density of liquid"	,
		0	,
		"kg/m3"
	)

◆ QUANTITY() [40/50]

HtuNtu::QUANTITY	(	rhov	,
		"Density of gas"	,
		0	,
		"kg/m3"
	)

◆ QUANTITY() [41/50]

HtuNtu::QUANTITY	(	T	,
		"Temperature"	,
		0	,
		"K"
	)

◆ QUANTITY() [42/50]

HtuNtu::QUANTITY	(	uL	,
		"Liquid superficial velocity"	,
		0	,
		"m/s"
	)

◆ QUANTITY() [43/50]

HtuNtu::QUANTITY	(	uLFl	,
		"Liquid superficial velocity at the flooding point"	,
		0	,
		"m/s"
	)

◆ QUANTITY() [44/50]

HtuNtu::QUANTITY	(	uLS	,
		"Liquid superficial velocity at the loading point"	,
		0	,
		"m/s"
	)

◆ QUANTITY() [45/50]

HtuNtu::QUANTITY	(	uV	,
		"Gas superficial velocity"	,
		0	,
		"m/s"
	)

◆ QUANTITY() [46/50]

HtuNtu::QUANTITY	(	uVFl	,
		"Gas superficial velocity at the flooding point"	,
		0	,
		"m/s"
	)

◆ QUANTITY() [47/50]

HtuNtu::QUANTITY	(	uVS	,
		"Gas superficial velocity at the loading point"	,
		0	,
		"m/s"
	)

◆ QUANTITY() [48/50]

HtuNtu::QUANTITY	(	uVzero	,
		"Reference gas superficial velocity"	,
		0	,
		"m/s"
	)

◆ QUANTITY() [49/50]

HtuNtu::QUANTITY	(	V	,
		"Molar flow of gas"	,
		0	,
		"kmol/s"
	)

◆ QUANTITY() [50/50]

HtuNtu::QUANTITY	(	WeL	,
		"Adimensional Weber number in the liquid phase"	,
		0	,
		""
	)

◆ setup()

void HtuNtu::setup ( void )

inlineoverridevirtual

performs initializations required immediately before solution

Implements Model.

◆ STRING() [1/3]

HtuNtu::STRING	(	hydraulics_calc	,
		"Hydraulic calculation mode"	,
		"Rating"
	)

Hydraulic calculation mode.

Valid hydraulic calculation modes:

Design
Rating

◆ STRING() [2/3]

HtuNtu::STRING	(	masstransfer_calc	,
		"Mass trasfer calculation mode"	,
		"Rating"
	)

Mass trasfer calculation mode.

Valid mass transfer calculation modes:

Design
Rating

◆ STRING() [3/3]

HtuNtu::STRING	(	packing	,
		"Packing type"	,
		"Ceramic BerlSaddle 25"
	)

Packing type.

Valid packing types:

Ceramic BerlSaddle 25 <– default
Ceramic BerlSaddle 13
Ceramic RaschigRing 50
Ceramic RaschigRing 25
Plastic PallRing 50
Plastic PallRing 35
Plastic PallRing 25

◆ type()

const std::string & HtuNtu::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

◆ Hcomps

std::vector<Quantity> HtuNtu::Hcomps

Packing height for component.

◆ in1VL_

Stream* HtuNtu::in1VL_

◆ in2VL_

Stream * HtuNtu::in2VL_

◆ KVL

std::vector<Quantity> HtuNtu::KVL

Vector of KVL volatilities.

◆ outSplit

std::vector<Quantity> HtuNtu::outSplit[2]

Split to vapor and liquid outlet for each component.

◆ type_

const std::string HtuNtu::type_

static

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

HtuNtu.h

Public Member Functions

Public Attributes

Static Public Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ HtuNtu()

◆ ~HtuNtu()

Member Function Documentation

◆ calculate()

◆ converged()

◆ go()

◆ initializeNonPersistents()

◆ INTEGER() [1/3]

◆ INTEGER() [2/3]

◆ INTEGER() [3/3]

◆ locationFromPort()

◆ objectiveFunction()

◆ QUANTITY() [1/50]

◆ QUANTITY() [2/50]

◆ QUANTITY() [3/50]

◆ QUANTITY() [4/50]

◆ QUANTITY() [5/50]

◆ QUANTITY() [6/50]

◆ QUANTITY() [7/50]

◆ QUANTITY() [8/50]

◆ QUANTITY() [9/50]

◆ QUANTITY() [10/50]

◆ QUANTITY() [11/50]

◆ QUANTITY() [12/50]

◆ QUANTITY() [13/50]

◆ QUANTITY() [14/50]

◆ QUANTITY() [15/50]

◆ QUANTITY() [16/50]

◆ QUANTITY() [17/50]

◆ QUANTITY() [18/50]

◆ QUANTITY() [19/50]

◆ QUANTITY() [20/50]

◆ QUANTITY() [21/50]

◆ QUANTITY() [22/50]

◆ QUANTITY() [23/50]

◆ QUANTITY() [24/50]

◆ QUANTITY() [25/50]

◆ QUANTITY() [26/50]

◆ QUANTITY() [27/50]

◆ QUANTITY() [28/50]

◆ QUANTITY() [29/50]

◆ QUANTITY() [30/50]

◆ QUANTITY() [31/50]

◆ QUANTITY() [32/50]

◆ QUANTITY() [33/50]

◆ QUANTITY() [34/50]

◆ QUANTITY() [35/50]

◆ QUANTITY() [36/50]

◆ QUANTITY() [37/50]

◆ QUANTITY() [38/50]

◆ QUANTITY() [39/50]

◆ QUANTITY() [40/50]

◆ QUANTITY() [41/50]

◆ QUANTITY() [42/50]

◆ QUANTITY() [43/50]

◆ QUANTITY() [44/50]

◆ QUANTITY() [45/50]

◆ QUANTITY() [46/50]

◆ QUANTITY() [47/50]

◆ QUANTITY() [48/50]

◆ QUANTITY() [49/50]

◆ QUANTITY() [50/50]

◆ setup()

◆ STRING() [1/3]

◆ STRING() [2/3]

◆ STRING() [3/3]

◆ type()

Member Data Documentation

◆ Hcomps

◆ in1VL_

◆ in2VL_

◆ KVL

◆ outSplit

◆ type_