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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Species transport combustion issue. › Reply To: Species transport combustion issue.

July 22, 2024 at 12:44 pm
Ren
Ansys Employee

Hello, Neeraj,

If the flow is indeed turbulent, then the FR/ED model is applicable. To numerically ignite the mixture, follow these steps:

  1. run the calculation for some number of iterations, say, 100, to establish some mixing of the reactants.
  2. define a small region in the expected flame region using, e.g., a region cell register, patch a high enough temperature (e.g., 2000 K) in this region. In addiiton, patch a reasonable value for a product species (e.g., co2 or h2o) mass fraction.

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