Page 37 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 1.3. Flow over a Cylinder (Re=20)

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.

1.3.5 Geo Tab

A cylinder is needed for the simulation. To create a cylinder
• 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 cylinder.

• Set the following parameters:
Name : Cylinder
Base Center , X−coord . : −0.5 [m]
Base Center , Y−coord . : 0.0 [m]
Base Center , Z−coord . : 0.0 [m]
Radius : 0.5 [m]
Cylinder Length : 1.0 [m]
Points on c i r c l e : 256

• Click .

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

• Click to create the Cylinder and send it to the mesh

The cylinder needs to be rotated and translated.
• Switch to the Objects tab

• Select the Cylinder object that appeared in the list of objects. Make sure the cylinder is
coloured in orange in the Graphical window

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