Document Type: Research Article
School of Chemical Engineering, Sichuan University, Chengdu 610065, China
Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610207, China
This work compares the accuracy and calculation efficiency of various tetrahedral and polyhedral meshes in a computational fluid dynamic (CFD) simulation of a stirred tank. Polyhedral mesh was found leading to much less mesh cells than the tetrahedral one without missing the calculation accuracy. The CFD numerical simulation results of the polyhedral mesh better agree to the experimental data comparing to the tetrahedral one at the same mesh cells number. In addition, the results of polyhedral mesh were also found to be more accurate than the tetrahedral one which was refined by adaptive meshing based on the velocity gradient.