| Cantera 3.0.0

Loading...
Searching...
No Matches
Public Member Functions | Protected Attributes | List of all members
Wall Class Reference
Zero-Dimensional Reactor Networks » Walls

Represents a wall between between two ReactorBase objects. More...

`#include <Wall.h>`

Inheritance diagram for Wall:
[legend]

## Detailed Description

Represents a wall between between two ReactorBase objects.

Walls can move (changing the volume of the adjacent reactors) and allow heat transfer between reactors.

Definition at line 134 of file Wall.h.

## Public Member Functions
string | type () const override
| String indicating the wall model implemented.
double | velocity () const
| Wall velocity \( v(t) \) at current reactor network time.
void | setVelocity (Func1 *f=0)
| Set the wall velocity to a specified function of time, \( v(t) \).
double | vdot (double t) override
| Rate of volume change (m^3/s) for the adjacent reactors.
double | expansionRate () override
| Rate of volume change (m^3/s) for the adjacent reactors.
double | heatFlux () const
| Heat flux function \( q_0(t) \) evaluated at current reactor network time.
void | setHeatFlux (Func1 *q)
| Specify the heat flux function \( q_0(t) \).
double | Q (double t) override
| Heat flow rate through the wall (W).
double | heatRate () override
| Heat flow rate through the wall (W).
void | setThermalResistance (double Rth)
void | setHeatTransferCoeff (double U)
| Set the overall heat transfer coefficient [W/m^2/K].
double | getHeatTransferCoeff () const
| Get the overall heat transfer coefficient [W/m^2/K].
void | setEmissivity (double epsilon)
| Set the emissivity.
double | getEmissivity () const
| Get the emissivity.
void | setExpansionRateCoeff (double k)
| Set the expansion rate coefficient.
double | getExpansionRateCoeff () const
| Get the expansion rate coefficient.
Public Member Functions inherited from WallBase
| WallBase (const WallBase &)=delete
WallBase & | operator= (const WallBase &)=delete
double | area ()
| Area in (m^2).
virtual void | setArea (double a)
| Set the area [m^2].
bool | install (ReactorBase &leftReactor, ReactorBase &rightReactor)
| Install the wall between two reactors or reservoirs.
virtual void | initialize ()
| Called just before the start of integration.
virtual bool | ready ()
| True if the wall is correctly configured and ready to use.
ReactorBase & | left () const
| Return a reference to the Reactor or Reservoir to the left of the wall.
const ReactorBase & | right ()
| Return a reference to the Reactor or Reservoir to the right of the wall.
void | setSimTime (double time)
| Set current reactor network time.

## Protected Attributes
double | m_k = 0.0
| expansion rate coefficient
double | m_rrth = 0.0
| heat transfer coefficient
double | m_emiss = 0.0
| emissivity
Func1 * | m_vf = nullptr
| Velocity function.
Func1 * | m_qf = nullptr
| Heat flux function.
Protected Attributes inherited from WallBase
ReactorBase * | m_left = nullptr
ReactorBase * | m_right = nullptr
double | m_time = 0.0
| current reactor network time
double | m_area = 1.0

## Member Function Documentation

## ◆ type()

string type | ( |  | ) | const
| inline override virtual

String indicating the wall model implemented.

Usually corresponds to the name of the derived class.

Reimplemented from WallBase.

Definition at line 141 of file Wall.h.

## ◆ velocity()

double velocity | ( |  | ) | const

Wall velocity \( v(t) \) at current reactor network time.

Since
  New in Cantera 3.0.

Definition at line 30 of file Wall.cpp.

## ◆ setVelocity()

void setVelocity | ( | Func1 * | f = `0` | ) |
| inline

Set the wall velocity to a specified function of time, \( v(t) \).

Definition at line 150 of file Wall.h.

## ◆ vdot()

double vdot | ( | double | t | ) |
| override virtual

Rate of volume change (m^3/s) for the adjacent reactors.

The volume rate of change is given by

\[ \dot V = K A (P_{left} - P_{right}) + F(t) \]

where K is the specified expansion rate coefficient, A is the wall area, and F(t) is a specified function of time. Positive values for `vdot` correspond to increases in the volume of reactor on left, and decreases in the volume of the reactor on the right.

Deprecated:
  Still used by traditional MATLAB toolbox; replaceable by expansionRate.

Reimplemented from WallBase.

Definition at line 37 of file Wall.cpp.

## ◆ expansionRate()

double expansionRate | ( |  | ) |
| override virtual

Rate of volume change (m^3/s) for the adjacent reactors.

The volume rate of change is given by

\[ \dot V = K A (P_{left} - P_{right}) + F(t) \]

where K is the specified expansion rate coefficient, A is the wall area, and and F(t) is a specified function evaluated at the current network time. Positive values for `expansionRate` correspond to increases in the volume of reactor on left, and decreases in the volume of the reactor on the right.

Since
  New in Cantera 3.0.

Reimplemented from WallBase.

Definition at line 49 of file Wall.cpp.

## ◆ heatFlux()

double heatFlux | ( |  | ) | const

Heat flux function \( q_0(t) \) evaluated at current reactor network time.

Since
  New in Cantera 3.0.

Definition at line 59 of file Wall.cpp.

## ◆ setHeatFlux()

void setHeatFlux | ( | Func1 * | q | ) |
| inline

Specify the heat flux function \( q_0(t) \).

Definition at line 190 of file Wall.h.

## ◆ Q()

double Q | ( | double | t | ) |
| override virtual

Heat flow rate through the wall (W).

The heat flux is given by

\[ Q = h A (T_{left} - T_{right}) + A G(t) \]

where h is the heat transfer coefficient, A is the wall area, and G(t) is a specified function of time. Positive values denote a flux from left to right.

Deprecated:
  Still used by traditional MATLAB toolbox; replaceable by heatRate.

Reimplemented from WallBase.

Definition at line 66 of file Wall.cpp.

## ◆ heatRate()

double heatRate | ( |  | ) |
| override virtual

Heat flow rate through the wall (W).

The heat flux is given by

\[ Q = h A (T_{left} - T_{right}) + A G(t) \]

where h is the heat transfer coefficient, A is the wall area, and G(t) is a specified function of time evaluated at the current network time. Positive values denote a flux from left to right.

Since
  New in Cantera 3.0.

Reimplemented from WallBase.

Definition at line 84 of file Wall.cpp.

## ◆ setThermalResistance()

void setThermalResistance | ( | double | Rth | ) |
| inline

Definition at line 220 of file Wall.h.

## ◆ setHeatTransferCoeff()

void setHeatTransferCoeff | ( | double | U | ) |
| inline

Set the overall heat transfer coefficient [W/m^2/K].

Definition at line 225 of file Wall.h.

## ◆ getHeatTransferCoeff()

double getHeatTransferCoeff | ( |  | ) | const
| inline

Get the overall heat transfer coefficient [W/m^2/K].

Definition at line 230 of file Wall.h.

## ◆ setEmissivity()

void setEmissivity | ( | double | epsilon | ) |
| inline

Set the emissivity.

Definition at line 235 of file Wall.h.

## ◆ getEmissivity()

double getEmissivity | ( |  | ) | const
| inline

Get the emissivity.

Definition at line 244 of file Wall.h.

## ◆ setExpansionRateCoeff()

void setExpansionRateCoeff | ( | double | k | ) |
| inline

Set the expansion rate coefficient.

Definition at line 249 of file Wall.h.

## ◆ getExpansionRateCoeff()

double getExpansionRateCoeff | ( |  | ) | const
| inline

Get the expansion rate coefficient.

Definition at line 254 of file Wall.h.

## Member Data Documentation

## ◆ m_k

double m_k = 0.0
| protected

expansion rate coefficient

Definition at line 261 of file Wall.h.

## ◆ m_rrth

double m_rrth = 0.0
| protected

heat transfer coefficient

Definition at line 264 of file Wall.h.

## ◆ m_emiss

double m_emiss = 0.0
| protected

emissivity

Definition at line 267 of file Wall.h.

## ◆ m_vf

Func1* m_vf = nullptr
| protected

Velocity function.

Definition at line 270 of file Wall.h.

## ◆ m_qf

Func1* m_qf = nullptr
| protected

Heat flux function.

Definition at line 273 of file Wall.h.

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

- Wall.h
- Wall.cpp