Wall

Configure the thermal boundary conditions by defining the temperature, convection, and heat flux.

  1. On the Fluids ribbon, select the Wall tool.
  2. Select an outlet or surface.
  3. In the microdialog, select a Boundary condition:
    • Temperature
    • Convection
    • Heat Flux
  4. Based on the boundary condition you selected, follow the relevant steps below.

Temperature

Define the temperature of a selected surface to change the temperature of the fluid when it encounters that surface.

Note: If no thermal boundary condition is applied, the temperature at an outlet will be the same as the temperature applied at the inlet. If multiple inlets with different temperatures feed into the same outlet, a thermal boundary condition is needed.
  1. Select an outlet or surface.
  2. In the microdialog, enter the Temperature.
    The same temperature will be applied to all selected surfaces.

Convection

Define the heat transfer coefficient and ambient temperature of a selected surface to change the temperature of the fluid when it encounters that surface.

  1. Select one or more surfaces where the convection occurs.
  2. In the microdialog, enter the HTC (heat transfer coefficient) between the fluid surface and the solid surface.
  3. Enter the Ambient Temperature of the solid surface.

Heat Flux

Add a flow of energy per unit of area per unit of time to a selected surface to change the fluid's temperature when it encounters that surface.

  1. Select the surface where you want to add the heat flux.
  2. In the microdialog, enter the Heat Flux.