In this case again, the mesh will be generated automatically.
We will generate a relatively coarse mesh, but it is chosen in order to minimise the number of nodes and to be able to calculate the case with the free version of Tdyn. In order to capture the flow pattern correctly, some critical areas need a finer mesh. Therefore we will assign smaller mesh sizes to the areas of interest, by means of the Assign Sizes menu.
To the step line (including the top and the lower edge points of the step) we will assign the size of 0.03. To the inflow line (including the top and the lower edge points) we will assign the size of 0.06. Unstructured size transition must be fixed to 0.4 and the Element general size to 0.125. The outcome of the mesh generation process is the unstructured mesh shown in Figure 56, consisting of 2500 nodes and 5000 elements:
Figure 73 Generated Mesh |
|