Fluids

Fluids

Multiphase + Solar Radiation Model need to speed up the calculations

    • Muhamad Eldebawy
      Subscriber
      Hi everyone, nI try to model solar collector that capture sun energy to get steam. nMy issue is that I use solar load model + Do Model for radiation and multiphase model.nI need to run the simulation for hours during different days but it is difficult as the multiphase require very small time step around 0.005 second to keep the solution stable !nI am wondering if there is any idea to speed up the calculations ?nThanks a lotn
    • DrAmine
      Ansys Employee
      Which multiphase model is used?n
    • Muhamad Eldebawy
      Subscriber
      VOF sharp interface n
    • YasserSelima
      Subscriber
      NITA is faster.n
    • Muhamad Eldebawy
      Subscriber
      Thank you guys appreciate your helpn
    • DrAmine
      Ansys Employee
      Be aware that NITA should be used only if ITA is first of all running but requires several iterations to converge. We also added a sort of hyribd NITA which requires more efforts than NITA but is more stable and it shows a lot of computational efforts saving compared to ITA when dealing with weak to moderate coupled cases ( low to moderate anisotropic cases)n
    • Muhamad Eldebawy
      Subscriber
      Thanks DrAmine n
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