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Difference between Dead and Solid regions Fluent Meshing

    • ahmedshafie
      Subscriber
      doing external flow with fluent , we supress geometry nso what is difference between making geometry region dead and solid ?n
    • Keyur Kanade
      Ansys Employee
      The dead region will not be refined with final sizes and will not be transferred to solution mode. nSolids will be refined as per sizes and will be transferred to solution mode. nPlease see help manual for more details about these commands. nRegards,nKeyurnGuidelines for Posting on Ansys Learning ForumnHow to access ANSYS help linksnn
    • ahmedshafie
      Subscriber
      so for external flow , solid region will have mesh while dead wont , does that affect study ?n
    • Rob
      Ansys Employee
      It depends. If you don't want heat transfer through the solid part then dead is fine. n
    • ahmedshafie
      Subscriber
      thanks for your answer , so heat transfer , also stresses applied to body right ? can i do fluid solid interaction afterwards if i select DEAD region ? n
    • Rob
      Ansys Employee
      You would need to map surface data to Mech and re-calculate the temperature field. If you want a temperature field in the metal bit(s) use Solid. n
    • ahmedshafie
      Subscriber
      Thanks alot , also Dead option has advantage that no solid mesh will be generated so less mesh elements used n
    • Rob
      Ansys Employee
      Correct. Dead is void (effectively) where as solid is meshed and part of the model & solution. nFor info, dead was originally the designation for non-fluid cells when we had full cartesian meshes and needed to fit the geometry into a cuboid (last needed in Fluent 4). Those cells were included in the cell count, but didn't use much RAM. The term was retained for voids in Fluent Meshing. n
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