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Hexa Mesh Generation for an Elbow Part Figure 138: Worst Cells After Adding Cells The element quality has improved and there are fewer elements in the lower bars of the histogram. The cells which now remain appear to have poor internal angles, and could be improved by adjusting the blocking to improve these angles. Adjusting the blocking too far could result in other cells (on the other side of the moved vertex) worsening. You could tweak to further improve this mesh, but it is more than high enough to give good results in any commercial solver. You will always have "worst elements", but if they are above the solver requirements, you can proceed. Typically, exceeding 0.1 for a determinant and 9 to 18 degrees for angle is sufficient. Step 9: Saving the Project 1. Save the blocking file. File > Blocking > Save Blocking As... 2. Save the mesh in unstructured format with the default name hex.uns to the working directory. Blocking Pre-Mesh Convert to Unstruct Mesh The mesh will automatically be loaded. 3. 170 Write the input file for ANSYS Fluent. ANSYS ICEM CFD 15.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates.
