Page 66 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 2.2. Flow over a group of Buildings

2.2.4.1 Geo Tab
In this tab, the necessary objects are added to the mesh.

• Click Geo at the top of the TransATUI.

Objects
Load the geometry file already prepared and located in the TransAT Object Database.

• Select the Database tab.
• Expand the Wind-Engineering folder

• Select Three buildings.gts

• then click to load the file to the mesh

• In the Choose Units window that popped up, select m in the drop-down box
• Activate the check-box Resize Mesh around Geometry to resize the domain

• Click to create the Buildings and send them to the mesh

The Buildings need to be positioned at suitable coordinates.

• Switch to the Objects tab

• Select the Three buildings object that appeared in the list of objects. Make sure the buildings
are coloured in orange in the Graphical window

• Under the Object Motion, find Object Transformation

• Change to Position and click the .

• Set the following parameters:
X Position : 6 [m]
Y Position : −24 [m]
Z Position : 18 [m]

• Click . This will slightly move the Buildings

2.2.4.2 Mesh & BCs Tab
In the Mesh & BCs tab, the domain along with the mesh are defined.

• Select Mesh & BCs at the top of the TransATUI window

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Ascomp AG Switzerland 56 Version 5.7