Page 421 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 10.2. Natural Convection in a Square Cavity at Ra = 10 6

10.2.7.2 Running the simulation
The simulation will now be run.

• Click Execute at the top of the TransATUI

The number of processors on which the simulation will be run can be changed by modifying the
value of the Number of Processors field. Set it accordingly to your workstation specification.
Note that it cannot be greater than the number of blocks which is equal to 4 in this case.

• Click to start the simulation

With these settings, the simulation should not converge within the specified number of iterations.
The simulation should stop after 2000 iterations.

To make non-converged simulations converge or make simulations converge faster, the numer-
ical parameters of the solvers in Simulation Parameters can be tuned. The setting of the
numerical parameters can be automatically done with the SarP module by means of an optimis-
ing iterative process.

A second simulation setup using the SarP module will now be created from the TransAT template
project that was created earlier.

10.2.8 Simulation in SarP optimisation mode

10.2.8.1 Creating the project

Please note: It is important to save different projects in different folders, because results will
always be stored in a sub-folder called RESULT. The template will be used for several grids.

• Click Files then select Open Project. Alternatively, press Ctrl+o.

• Select naturalconvection.stt.

The Execute tab is automatically opened.
• Click Files then select Save As. Alternatively, press Ctrl+Shift+s.

• Click to select the folder where the project will be saved

• Create a new directory by clicking the icon

• Set a name for the new directory, say sarp.

• Set a name to the project (naturalconvection sarp.stt for instance) then click .

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