Page 33 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 1.2. Backward Facing Step

1.2.7.1 Starting the simulation
Running TransAT
The number of processors on which the simulation will run can be modified by changing the
field Number of Processors.

• Click to start the simulation

1.2.8 Visualization of the results

The results of the simulation can be seen with the help of the Open-Source Visualisation Tool,
ParaView.

• To launch ParaView, click Start and select All Programs > ParaView-4.0.1 > ParaView.

• Click File − > Open.

• Navigate to your project folder.

• Go to the RESULT folder and choose backwardstep...vtm. Click OK

• Click in the Properties Panel, on the bottom left.

• Create a Slice object by clicking in the toolbar (alternatively select Filters − > Com-
mon − > Slice in the menu bar) to see variables in a plane. Click on Z Normal and
Center on Bounds to see the flow in the middle of the channel. Click .

• Choose variable U from the drop-down list. (See Figure 6.5).
• Clicking on the rainbow button on the left shows the Legend. Clicking on the double-arrow
button on its right re-scales the color range to the data range.

• To visualise the converged results, go to the last frame by hitting in the toolbar.

Plotting Velocity Vectors
To create velocity vectors in ParaView, an object is needed to calculate the 2D velocity and
a plotting device to display the vector. To this end, the Calculator and the Glyph tools are
used.

• Make sure the Slice filter is selected.

• Create a Calculator object by clicking in the menu bar (alternatively, you can select
Filters − > Common − > Calculator)

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Ascomp AG Switzerland 23 Version 5.7