Page 343 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 8.1. Flow around a train entering a tunnel

• Enter a project folder name, say moving train, then click to create the folder

• Click to select the folder and close the browser

• Set Project Name to a more explicit name such as moving train then click

After clicking , the Mesh & BCs tab will be opened.

The Geo, Mesh & BCs, Input and Execute tabs at the top of the TransATUI window can
now be selected to open the modules to set up a simulation with TransAT.

Geo is a module that can be used to create simple geometries for TransAT. The grid properties
are defined in Mesh & BCs tab whilst the physical and numerical parameters of the simulation
are defined in the Input tab. When the simulation is ready, the simulation will be started from
the Execute tab.

Some general operations such as saving and loading projects or exiting TransAT can be done
by clicking Files then selecting the corresponding option.

8.1.5 Geo Tab

The train will be modelled by a simle rectangular geometry for the simulation. To create this
object:

• Click Geo at the top of the TransATUI.

• Click Create Shape tab within the left panel

• In the object selection drop-down list next to the button , choose Cube.

• Set the following parameters:
Name : t r a i n
X min : −1.2 [m]
X max : −1.0 [m]
Y min : −0.01 [m]
Y max : 0.01 [m]
Z min : −0.01 [m]
Z max : 0.01 [m]

• Click .

• Check Resize Mesh around Geometry, to adjust the domain around the train

c
Ascomp AG Switzerland 333 Version 5.7