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TransAT Tutorial Manual                                   2.2. Flow over a group of Buildings



               Domain & Grid
                   • Select the Domain & Grid tab

                   • Set the following values for the domain boundaries in the Domain section

                     X min [m] : −200.0     X max [m] : 200.0
                     Y min [m] : −150.0     Y max [m] : 150.0
                     Z min [m] :     0.0    Z max [m] : 120.0




                   • Set the following parameters to define the general properties of the mesh: the number of
                     cells in each direction domain and the refinement zones of the main grid

                     Nx:   34 , Cell Ratio : 1.1 , Maximal Ratio : 6
                     Ny:   41 , Cell Ratio : 1.1 , Maximal Ratio : 6
                     Nz :  20 , Cell Ratio : 1.2 , Maximal Ratio : 6


                   • Make sure that Blocks Refinement is selected to give a finer grid around blocks













































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Ascomp AG Switzerland                    57                                   Version 5.7
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