Theory
The program writes a fixedValue temperature condition on the wall, equation (1). The heat flux through the wall is then whatever the gas-side wall functions give for that temperature difference; nothing outside the wall (shell, insulation, environment) is considered. Use it for a wall whose temperature is known (for example measured) or for a wall cooled or heated to a set temperature.
The heat through such a wall is part of the run's energy balance, which quality gate 2 checks.
Equations
| where | meaning | unit |
|---|---|---|
| Wall temperature entered (this setting) | °C | |
| Temperature written to the solver | K |
Default and rule
- Default
- 200 °C (shown when 'Fixed temperature' is chosen)
- Rule
200 °C in the box; the case file has no value until the mode is chosen.
- Source
The condition is OpenFOAM's
fixedValuetemperature condition (see Thermal condition of a wall).
Valid range above −273.15 °C; mode 'Fixed temperature' only
Units
Degrees Celsius, unlike the inlet temperature (kelvin).
Uniform
One temperature for the whole patch; a temperature that varies along the wall cannot be entered.