Page 28 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 1.2. Backward Facing Step

• Select a block by clicking up or down triangle next to the Select Block field

• Click

• Fill in the fields X min and X max so that they match the following parameters for each
block then click .
Block 1
X min : 0
X max: 0.015

Block 2
X min : 0.015
X max: 0.05

Block 3
X min : 0.015
X max: 0.05

BCs Tab

• Select BCs tab.
To see the surfaces of all or each of the boundaries, choose a boundary in the drop-down list at
the top of the BCs tab. One boundary condition of each type is available to be edited and used
from the start. Additional BCs can be created by clicking on . is used to assign a selected
BC to a highlighted surface.

Creating Boundary Conditions:
In this case, an inflow is at X min, an outflow at X max, walls are at Y min and Y max, and
symmetry boundary conditions at Z min and Z max. Follow the step-by-step a instructions given
below to create an inflow boundary condition and to define its properties.

• From the Inflow BC, rename Inflow to inflow1

• Click

• Fill in the inflow properties:

– Inflow Data Source: From BC
– Inflow Type: Velocity based

– Inflow profile: Constant

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