Page 409 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 10.1. Flow past a backward facing step

With these settings, an iterative process will be launched from the start of the simulation to
optimise the solver parameters.

Contrary to the original simulation, this simulation should end and reach the target residuals
in less than 2000 iterations due to the parameter correction operated by the SArP module.

Please note: clicking stops the optimisation process and restarts the simulation with the
best solution found by the process at that time i.e. the valid solution with the highest score. This
can help in reducing the duration of the optimisation process. Other methods that can reduce
the computation time of the SArP module are described in the Speeding up SArP section of the
TransAT User Manual.

10.1.10 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 xy-backwardstep...vtm. Click OK

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

• Select U in the variable the drop-down list to show the distribution of the streamwise
velocity component in the domain.
• Clicking the rainbow button on the left shows the Legend. Clicking the double-arrow button
on its right rescales the color range to the data range.

• See Figure 10.6 for the steady state result of the streamwise velocity component.

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

To get a rough idea about visualisation of TransAT results with ParaView, please refer to the
TransAT Paraview Tutorial .

More detailed information can also be found in the Paraview Tutorial on the ParaView website.

c
Ascomp AG Switzerland 399 Version 5.7