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TransAT Tutorial Manual 2.3. Flow in an obstructed pipe

2.3.7 Mesh & BCs Tab

The computational domain is defined and the mesh is created in the Mesh & BCs tab.

• Select the Mesh & BCs tab at the top of TransATUI if that is not already the case.

Domain & Grid Tab
In this section the domain and the computational grid for the simulation will be defined.

• Select the Domain & Grid tab

• In the Domain section, set the following values for the domain boundaries:

X min [m] : 0.0
X max [m] : 0.762
Y min [m] : −0.11
Y max [m] : 0.11
Z min [m] : −0.11
Z max [m] : 0.11

• Set the following parameters to define the cell density and aspect ratios in the domain

Nx: 31
Cell Ratio : 1.0
Maximal Ratio : 1.0

Ny: 26
Cell Ratio : 1.0
Maximal r a t i o : 1.0
Nz : 26
Cell Ratio : 1.0
Maximal Ratio : 1.0

Ratios are set to 1.0 to create a uniform mesh.

Note that Nx, Ny, Nz are the number of corner points in the x, y and z directions. The
actual number of cells in each direction is the number of corner points in the corresponding di-
rection minus one.

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