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  3. Divide by zero error occurs when calculating the swirl number Swirl = tangential velocity / axial velocity

Divide by zero error occurs when calculating the swirl number Swirl = tangential velocity / axial velocity

Tagged: 18, cfd-post, fluid-dynamics, General
    • June 5, 2023 at 7:05 am
      FAQFAQ
      Participant

      The problem is that the axial velocity will be zero somewhere in the domain, often along the axis where the flow reverses in the presence of a precessing vortex core. The solution is to instead calculate: Swirl = tangential velocity / (axial velocity + 0.000001 [ms^-1]

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