Page 307 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 7.2. coupling slug

Initial conditions
In the Initial Conditions tab, the initial conditions for the simulation are set. In this tutorial
advanced initial conditions are used.

The initial velocity can be defined in a C++ file initialconditions.cxx. A template of an
initial condition file can be found in in the reference folder (Tutorials/coupling slugs in TransAT
installation folder). For the simulation, a ready-made initial conditions file will be used.

• Copy the file initial conditions file initialconditions.cxx from the sub-folder Tutorials/8.2 -
coupling slugs of the Public/Documents/TransAT5.7 folder to the project folder.

To initialise the variables in the domain,

• Select Advanced Initial Conditions

• Click to compile the initial conditions. This step is optional and only checks that
the initialcondition.cxx file is written properly and can be compiled. The flow field will be
initialised later in the Execute window.

Output Management
The Output Management tab is used to define the output of the simulation, in particular the
format of the visualization files, the variables to be output, as well as the frequency of generation
of the output.

• Click Output Management on the left-hand side of the TransATUI

• Set the Output File Format and Frequency of output files from Iteration / timestep
number as follows

Output F i l e Format : Paraview
Frequency of output f i l e s : 100

• Click to select the variables for which data is to be saved
• Activate the following variables in the Output Variables window then click to save the
settings and close the window

Primary v a r i a b l e s :
Pressure : ON
U−Velocity : ON
W−Velocity : ON
Temperature : ON

Material Properties

c
Ascomp AG Switzerland 297 Version 5.7