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Question about heat transfer coefficient setting for CFX |
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June 14, 2013, 19:05 |
Question about heat transfer coefficient setting for CFX
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#1 |
Senior Member
Meimei Wang
Join Date: Jul 2012
Posts: 494
Rep Power: 16 |
Hi,
I'm doing the conjugate heat transfer. I'd like to set up a heat transfer coefficient at the solid porous interface. But my setting doesn't work at all. The simulation result is the same to the result of the same simulation but without adding heat transfer coefficient. I set up everything by button clicking. There is one thing strange during the setting: I don't find the heat transfer coefficient setting button at the 'Interface' column. So I just skip that part. I only set up the 'nonoverlap' column of porous domain and solid domain to heat transfer coefficient. Here is my CCL code. There isn't any error report. Could you debug it for me? FLOW: Flow Analysis 1 &replace DOMAIN: porous3 Coord Frame = Coord 0 Domain Type = Porous Location = POROUS3 BOUNDARY: porou2_porous3_domain Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = INTERFACE_POROUS2_POROUS3_2 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END MASS AND MOMENTUM: Option = Conservative Interface Flux END TURBULENCE: Option = Conservative Interface Flux END END END BOUNDARY: porous3 Default Boundary Type = WALL Create Other Side = Off Interface Boundary = Off Location = Primitive 2D C BOUNDARY CONDITIONS: HEAT TRANSFER: Heat Transfer Coefficient = heat transfer coefficient Option = Heat Transfer Coefficient Outside Temperature = Inlet temperature END MASS AND MOMENTUM: Option = No Slip Wall END WALL ROUGHNESS: Option = Smooth Wall END END END BOUNDARY: porous3 periodic Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = PERIODIC4.1 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END MASS AND MOMENTUM: Option = Conservative Interface Flux END TURBULENCE: Option = Conservative Interface Flux END END END BOUNDARY: porous3 periodic Side 2 Boundary Type = INTERFACE Interface Boundary = On Location = PERIODIC4.2 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END MASS AND MOMENTUM: Option = Conservative Interface Flux END TURBULENCE: Option = Conservative Interface Flux END END END BOUNDARY: porous3 symmetry Boundary Type = SYMMETRY Interface Boundary = Off Location = SYMMETRY4 END BOUNDARY: porous3_outlet Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = OUTLET_POROUS3_INTERFACE_1 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END MASS AND MOMENTUM: Option = Conservative Interface Flux END TURBULENCE: Option = Conservative Interface Flux END END END BOUNDARY: solid porous interface3 Side 2 Boundary Type = INTERFACE Interface Boundary = On Location = SURFACE3 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END MASS AND MOMENTUM: Option = No Slip Wall END WALL ROUGHNESS: Option = Smooth Wall END END NONOVERLAP CONDITIONS: Boundary Type = WALL BOUNDARY CONDITIONS: HEAT TRANSFER: Heat Transfer Coefficient = heat transfer coefficient Option = Heat Transfer Coefficient Outside Temperature = Inlet temperature END MASS AND MOMENTUM: Option = No Slip Wall END WALL ROUGHNESS: Option = Smooth Wall END END END END DOMAIN MODELS: BUOYANCY MODEL: Option = Non Buoyant END DOMAIN MOTION: Option = Stationary END MESH DEFORMATION: Option = None END REFERENCE PRESSURE: Reference Pressure = 1 [atm] END END FLUID DEFINITION: Fluid 1 Material = water table interpolation then conducitity modified Option = Material Library MORPHOLOGY: Option = Continuous Fluid END END FLUID MODELS: COMBUSTION MODEL: Option = None END HEAT TRANSFER MODEL: Option = Thermal Energy END THERMAL RADIATION MODEL: Option = None END TURBULENCE MODEL: Option = Reynolds Stress END TURBULENT HEAT TRANSFER: TURBULENT FLUX CLOSURE: Option = Eddy Diffusivity Turbulent Prandtl Number = 0.9 END END TURBULENT WALL FUNCTIONS: Option = Scalable END END POROSITY MODELS: AREA POROSITY: Option = Isotropic END LOSS MODEL: Loss Velocity Type = Superficial Option = Directional Loss DIRECTIONAL LOSS MODEL: STREAMWISE DIRECTION: Option = Cartesian Components Unit Vector X Component = 0 Unit Vector Y Component = 1 Unit Vector Z Component = 0 END STREAMWISE LOSS: Option = Permeability and Loss Coefficient Permeability = 1 [m^2] END TRANSVERSE LOSS: Option = Permeability and Loss Coefficient Permeability = spermeability [m^2] END END END VOLUME POROSITY: Option = Value Volume Porosity = 0.5 END END END END FLOW: Flow Analysis 1 &replace DOMAIN: solid Coord Frame = Coord 0 Domain Type = Solid Location = SILCON BOUNDARY: heat flux Boundary Type = WALL Create Other Side = Off Interface Boundary = Off Location = HEAT_FLUX BOUNDARY CONDITIONS: HEAT TRANSFER: Heat Flux in = heat flux value Option = Heat Flux END END END BOUNDARY: solid fluid interface Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = INTERFACE1 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END NONOVERLAP CONDITIONS: Boundary Type = WALL BOUNDARY CONDITIONS: HEAT TRANSFER: Heat Transfer Coefficient = heat transfer coefficient Option = Heat Transfer Coefficient Outside Temperature = Inlet temperature END END END END BOUNDARY: solid porous interface2 Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = INTERFACE2 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END NONOVERLAP CONDITIONS: Boundary Type = WALL BOUNDARY CONDITIONS: HEAT TRANSFER: Heat Transfer Coefficient = heat transfer coefficient Option = Heat Transfer Coefficient Outside Temperature = Inlet temperature END END END END BOUNDARY: solid porous interface3 Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = INTERFACE3 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END NONOVERLAP CONDITIONS: Boundary Type = WALL BOUNDARY CONDITIONS: HEAT TRANSFER: Heat Transfer Coefficient = heat transfer coefficient Option = Heat Transfer Coefficient Outside Temperature = Inlet temperature END END END END BOUNDARY: solid symmetry1 Boundary Type = SYMMETRY Interface Boundary = Off Location = SOLID_SYMMETRY1.1 END BOUNDARY: solid symmetry2 Boundary Type = SYMMETRY Interface Boundary = Off Location = SOLID_SYMMETRY1.2 END BOUNDARY: solid1 periodic Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = SOLID_PERIODIC1.1 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END END BOUNDARY: solid1 periodic Side 2 Boundary Type = INTERFACE Interface Boundary = On Location = SOLID_PERIODIC1.2 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END END BOUNDARY: solid2 periodic Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = SOLID_PERIODIC2.1 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END END BOUNDARY: solid2 periodic Side 2 Boundary Type = INTERFACE Interface Boundary = On Location = SOLID_PERIODIC2.2 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END END BOUNDARY: solid3 periodic Side 1 Boundary Type = INTERFACE Interface Boundary = On Location = SOLID_PERIODIC3.1 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END END BOUNDARY: solid3 periodic Side 2 Boundary Type = INTERFACE Interface Boundary = On Location = SOLID_PERIODIC3.2 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END END DOMAIN MODELS: DOMAIN MOTION: Option = Stationary END MESH DEFORMATION: Option = None END END SOLID DEFINITION: Solid 1 Material = silicon Option = Material Library MORPHOLOGY: Option = Continuous Solid END END SOLID MODELS: HEAT TRANSFER MODEL: Option = Thermal Energy END THERMAL RADIATION MODEL: Option = None END END END END FLOW: Flow Analysis 1 &replace DOMAIN INTERFACE: solid porous interface3 Boundary List1 = solid porous interface3 Side 1 Boundary List2 = solid porous interface3 Side 2 Filter Domain List1 = solid Filter Domain List2 = porous3 Interface Region List1 = INTERFACE3 Interface Region List2 = SURFACE3 Interface Type = Solid Porous INTERFACE MODELS: Option = General Connection FRAME CHANGE: Option = None END PITCH CHANGE: Option = None END END MESH CONNECTION: Option = GGI END END END
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Best regards, Meimei Last edited by Anna Tian; June 15, 2013 at 04:10. |
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June 16, 2013, 06:28 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,826
Rep Power: 144 |
You cannot set a HTC at an interface as the HTC is calculated as part of the simulation.
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