Page 52 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 2.1. Block Mesh Refinement: Flow over Cylinder (Re=150)

2.1.5.1 Mesh & BCs Tab
In the Mesh & BCs tab, the domain along with the mesh are defined.

• Select Mesh & BCs at the top of the TransATUI window

Domain & Grid
• Select the Domain & Grid tab and set the following values for the domain boundaries.

X min [m] : 0.0
X max [m] : 24.0
Y min [m] : 0.0
Y max [m] : 12.0
Z min [m] : −0.005
Z max [m] : 0.005

The grid is not defined for now, as several grids will be tested further down in this tutorial.

BCs Tab
The boundary conditions must now be set for this case. An inflow will be defined on the X min
boundary, and a outflow on the X max. Other boundaries will be defined as symmetry conditions.

• Select the BCs tab

• Ensure that the Inflow BC has a type of Inflow.

• Click and set the following parameters in the window that popped up:

– Inflow Data Source: From BC
– Inflow Type: Velocity based
– Inflow profile: Constant
– Inflow Velocity components: u: 0.015 v: 0.0 w: 0.0

• Click to save the settings and close the window
• Ensure the Outflow BC has a type of Outflow.

• Click and set the following parameters in the window that popped up:
– Outflow type: Pressure
– Outflow Data Source: From Boundary Conditions

– Outflow Pressure: 0

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