Valve Class Reference

Supply a mass flow rate that is a function of the pressure drop across the valve. More...

#include <flowControllers.h>

Inheritance diagram for Valve:

Detailed Description

Supply a mass flow rate that is a function of the pressure drop across the valve.

The default behavior is a linearly proportional to the pressure difference. Note that real valves do not have this behavior, so this class does not model real, physical valves.

Definition at line 123 of file flowControllers.h.

Public Member Functions
string	type () const override
	String indicating the flow device implemented.
void	setValveCoeff (double c)
	Set the proportionality constant between pressure drop and mass flow rate.
double	getValveCoeff ()
	Get the valve coefficient.
void	updateMassFlowRate (double time) override
	Compute the current mass flow rate, based on the pressure difference.
	FlowDevice (const string &name="(none)")
	FlowDevice (const FlowDevice &)=delete
Public Member Functions inherited from FlowDevice
	FlowDevice (const string &name="(none)")
	FlowDevice (const FlowDevice &)=delete
FlowDevice &	operator= (const FlowDevice &)=delete
virtual string	type () const
	String indicating the flow device implemented.
string	name () const
	Retrieve flow device name.
void	setName (const string &name)
	Set flow device name.
bool	setDefaultName (map< string, int > &counts)
	Set the default name of a flow device. Returns false if it was previously set.
double	massFlowRate ()
	Mass flow rate (kg/s).
virtual void	updateMassFlowRate (double time)
	Update the mass flow rate at time 'time'.
double	outletSpeciesMassFlowRate (size_t k)
	Mass flow rate (kg/s) of outlet species k.
double	enthalpy_mass ()
	specific enthalpy
bool	install (ReactorBase &in, ReactorBase &out)
	Install a flow device between two reactors.
virtual bool	ready ()
ReactorBase &	in () const
	Return a reference to the upstream reactor.
const ReactorBase &	out () const
	Return a const reference to the downstream reactor.
ReactorBase &	out ()
	Return a mutable reference to the downstream reactor.
double	evalPressureFunction ()
	Return current value of the pressure function.
virtual void	setPressureFunction (Func1 *f)
	Set a function of pressure that is used in determining the mass flow rate through the device.
double	evalTimeFunction ()
	Return current value of the time function.
virtual void	setTimeFunction (Func1 *g)
	Set a function of time that is used in determining the mass flow rate through the device.
void	setSimTime (double time)
	Set current reactor network time.

Additional Inherited Members
Protected Attributes inherited from FlowDevice
string	m_name
	Flow device name.
bool	m_defaultNameSet = false
	true if default name has been previously set.
double	m_mdot = Undef
Func1 *	m_pfunc = nullptr
	Function set by setPressureFunction; used by updateMassFlowRate.
Func1 *	m_tfunc = nullptr
	Function set by setTimeFunction; used by updateMassFlowRate.
double	m_coeff = 1.0
	Coefficient set by derived classes; used by updateMassFlowRate.
double	m_time = 0.
	Current reactor network time.

Member Function Documentation

type()

string type ( ) const

inlineoverridevirtual

String indicating the flow device implemented.

Usually corresponds to the name of the derived class.

Reimplemented from FlowDevice.

Definition at line 128 of file flowControllers.h.

setValveCoeff()

void setValveCoeff ( double  c )

inline

Set the proportionality constant between pressure drop and mass flow rate.

c has units of kg/s/Pa. The mass flow rate is computed as:

\[\dot{m} = c g(t) f(\Delta P) \]

where g and f are functions of time and pressure drop that are set by setTimeFunction and setPressureFunction, respectively. If no functions are specified, the mass flow rate defaults to:

\[\dot{m} = c \Delta P \]

Definition at line 142 of file flowControllers.h.

getValveCoeff()

double getValveCoeff ( )

inline

Get the valve coefficient.

Definition at line 147 of file flowControllers.h.

updateMassFlowRate()

void updateMassFlowRate ( double  time )

overridevirtual

Compute the current mass flow rate, based on the pressure difference.

Reimplemented from FlowDevice.

Definition at line 52 of file flowControllers.cpp.

FlowDevice()

FlowDevice ( const string &  name = "(none)" )

inline

Definition at line 26 of file FlowDevice.h.

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

• flowControllers.h
• flowControllers.cpp