Page 69 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 2.2. Flow over a group of Buildings

X Min : −75
X Max: 85
Y Min : −100
Y Max: 100
Z Min : 0
Z Max: 70

Now blocks will be split so as to be able to use several processors.

• Select son block by changing the field Select block to 2

• Click then enter the number of blocks in each direction as the following:
X d i r e c t i o n : 1
Y d i r e c t i o n : 2
Z d i r e c t i o n : 1

• Click

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. The bottom surface will be defined as a wall. Other
boundaries will be defined as symmetry conditions.

• Select the BCs tab

• Make sure the Inflow BC is available and that its type is Inflow.

• Click to define its parameters.

• In the Basic panel, set the values of the following parameters:

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

– Inflow Velocity components: u: 1.0 v: 0.0 w: 0.0

• In the Turbulence (RANS) panel, set the values of the following parameters then click
:

– Turbulence intensity: 0.1

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