Fluids

Fluids

Is the mesh quality suitable for large eddy simulation?

    • murali666
      Subscriber

      I am trying do a large eddy simulation to simulate a 3D flow field around a bridge pier. The geometry of the flow domain is given below. Inflation layers are given on the surface of the cylinder, bottom and on sides. The mesh cells are looking nasty at the intersection of two inflation layers. Please tell me weather shown mesh is suitable for LES study. If not, please mention how to improve the mesh quality in those regions.

    • DrAmine
      Ansys Employee
      Yes the connections are nasty. Try to avoid that.
      LES Assessment can be done stepwise by first running RANS, quantifying if you can resolve the integral length scale with at least 4-5 cells and pre-estimating the time step size to have CFL = 1 in the regions of interest.
    • murali666
      Subscriber
      How can I avoid those nasty mesh cells at the intersection of two inflation layers?
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