Cantera  2.5.1
Public Member Functions | Protected Attributes | List of all members
PressureController Class Reference

A class for flow controllers where the flow rate is equal to the flow rate of a "master" mass flow controller plus a correction proportional to the pressure difference between the inlet and outlet. More...

#include <flowControllers.h>

Inheritance diagram for PressureController:
[legend]
Collaboration diagram for PressureController:
[legend]

Public Member Functions

virtual std::string typeStr () const
 String indicating the flow device implemented. More...
 
virtual bool ready ()
 
void setMaster (FlowDevice *master)
 
virtual void setTimeFunction (Func1 *g)
 Set a function of time that is used in determining the mass flow rate through the device. More...
 
void setPressureCoeff (double c)
 Set the proportionality constant between pressure drop and mass flow rate. More...
 
double getPressureCoeff ()
 Get the pressure coefficient. More...
 
virtual void updateMassFlowRate (double time)
 Update the mass flow rate at time 'time'. More...
 
- Public Member Functions inherited from FlowDevice
 FlowDevice (const FlowDevice &)=delete
 
FlowDeviceoperator= (const FlowDevice &)=delete
 
virtual int type () const
 Return an integer indicating the type of flow device. More...
 
double massFlowRate (double time=-999.0)
 Mass flow rate (kg/s). More...
 
double outletSpeciesMassFlowRate (size_t k)
 Mass flow rate (kg/s) of outlet species k. More...
 
double enthalpy_mass ()
 specific enthalpy More...
 
bool install (ReactorBase &in, ReactorBase &out)
 Install a flow device between two reactors. More...
 
ReactorBasein () const
 Return a reference to the upstream reactor. More...
 
const ReactorBaseout () const
 Return a const reference to the downstream reactor. More...
 
virtual void setParameters (int n, const double *coeffs)
 Set parameters. More...
 
void setFunction (Func1 *f)
 Set a function of a single variable that is used in determining the mass flow rate through the device. More...
 
virtual void setPressureFunction (Func1 *f)
 Set a function of pressure that is used in determining the mass flow rate through the device. More...
 
void setMassFlowRate (double mdot)
 Set the fixed mass flow rate (kg/s) through the flow device. More...
 

Protected Attributes

FlowDevicem_master
 
- Protected Attributes inherited from FlowDevice
double m_mdot
 
Func1m_pfunc
 Function set by setPressureFunction; used by updateMassFlowRate. More...
 
Func1m_tfunc
 Function set by setTimeFunction; used by updateMassFlowRate. More...
 
double m_coeff
 Coefficient set by derived classes; used by updateMassFlowRate. More...
 
int m_type
 

Detailed Description

A class for flow controllers where the flow rate is equal to the flow rate of a "master" mass flow controller plus a correction proportional to the pressure difference between the inlet and outlet.

Definition at line 63 of file flowControllers.h.

Member Function Documentation

◆ typeStr()

virtual std::string typeStr ( ) const
inlinevirtual

String indicating the flow device implemented.

Usually corresponds to the name of the derived class.

Reimplemented from FlowDevice.

Definition at line 68 of file flowControllers.h.

◆ setTimeFunction()

virtual void setTimeFunction ( Func1 g)
inlinevirtual

Set a function of time that is used in determining the mass flow rate through the device.

The evaluation of mass flow depends on the derived flow device class.

Reimplemented from FlowDevice.

Definition at line 80 of file flowControllers.h.

◆ setPressureCoeff()

void setPressureCoeff ( 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:

\[\dot{m} = \dot{m}_{master} + c f(\Delta P) \]

where f is a functions of pressure drop that is set by setPressureFunction. If no functions is specified, the mass flow rate defaults to:

\[\dot{m} = \dot{m}_{master} + c \Delta P \]

Definition at line 94 of file flowControllers.h.

References FlowDevice::m_coeff.

◆ getPressureCoeff()

double getPressureCoeff ( )
inline

Get the pressure coefficient.

Definition at line 99 of file flowControllers.h.

References FlowDevice::m_coeff.

◆ updateMassFlowRate()

void updateMassFlowRate ( double  time)
virtual

Update the mass flow rate at time 'time'.

This must be overloaded in subclassess to update m_mdot.

Reimplemented from FlowDevice.

Definition at line 42 of file flowControllers.cpp.

References Func1::eval(), FlowDevice::in(), FlowDevice::m_coeff, FlowDevice::m_pfunc, FlowDevice::massFlowRate(), FlowDevice::out(), ReactorBase::pressure(), and FlowDevice::updateMassFlowRate().


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