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What is the appropriate turbulent model?

  • Feb 20 2020
  • wickramasighe.a.p.r.047

Dear All,

In Nays2DH, it provides 3 different turbulent models. Constant eddy viscosity, Zero equation and K-epsilon model. What are the advantages/disadvantages of those models? What is the best model to investigate secondary currents generated by a vegetation patch near an embankment?

Thanks!
Romitha.

コメント

  1. UC-1h says:

    Hello,
    It is explained in manual P9, but it depends on the grid spacing etc.
    Generally, I think the K-E model has higher accuracy.
    Please compare yourself for details.
    Regards,

  2. pritikumaricetpa says:

    Reynolds-Averaged Navier-Stokes (RANS) models are often used for turbulent flows in which the turbulence scales are larger than the grid size. These models solve for the time-averaged quantities of velocity and pressure, and often employ a turbulence model to model the effects of the unresolved turbulence scales.
    if you’re looking to improve your coding skills or learn new technologies, Cetpa Infotech offers a range of courses and training programs to help you stay up to date with the latest developments in the field. Check out our website for more information.

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> Forum > Nays2DH > What is the appropriate turbulent model?