Difference between Dead and Solid regions Fluent Meshing
ahmedshafie
Member
doing external flow with fluent , we supress geometry
so what is difference between making geometry region dead and solid ?
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Rob
UKForum Coordinator
It depends. If you don't want heat transfer through the solid part then dead is fine.
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Rob
UKForum Coordinator
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.
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Rob
UKForum Coordinator
Correct. Dead is void (effectively) where as solid is meshed and part of the model & solution.
For 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.
Answers
The dead region will not be refined with final sizes and will not be transferred to solution mode.
Solids will be refined as per sizes and will be transferred to solution mode.
Please see help manual for more details about these commands.
Regards,
Keyur
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@kkanade so for external flow , solid region will have mesh while dead wont , does that affect study ?
It depends. If you don't want heat transfer through the solid part then dead is fine.
@Rob 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 ?
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.
@Rob Thanks alot , also Dead option has advantage that no solid mesh will be generated so less mesh elements used
Correct. Dead is void (effectively) where as solid is meshed and part of the model & solution.
For 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.