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[CFX应用] 求助:结果总是不对

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发表于 2007-7-4 17:17 | 显示全部楼层 |阅读模式

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有一个直径为0.12m,温度为900度的钢球突然放入盛满水的,完全绝热的横截面直径和高度均为0.6m的圆柱体水箱中,水的温度为20度,材料参数为:水:密度=1000; K=0.6;C=4185;钢:密度=7800;K=70;C=448。求解十分钟后钢球与水的温度分布(忽略水的流动,钢球置于水箱正中央)。
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 楼主| 发表于 2007-7-4 17:18 | 显示全部楼层

这是命令流,请大家帮我看看 谢谢了

LIBRARY:
   MATERIAL: Steel
     Material Group = CHT Solids,Particle Solids
     Option = Pure Substance
     Thermodynamic State = Solid
     PROPERTIES:
       Option = General Material
       EQUATION OF STATE:
         Density = 7854 [kg m^-3]
         Molar Mass = 55.85 [kg kmol^-1]
         Option = Value
       END
       SPECIFIC HEAT CAPACITY:
         Option = Value
         Reference Specific Enthalpy = 0 [J/kg]
         Reference Specific Entropy = 0 [J/kg/K]
         Reference Temperature = 25 [C]
         Specific Heat Capacity = 4.34E+02 [J kg^-1 K^-1]
       END
       THERMAL CONDUCTIVITY:
         Option = Value
         Thermal Conductivity = 60.5 [W m^-1 K^-1]
       END
     END
   END
   MATERIAL: Water
     Material Description = Water (liquid)
     Material Group = Constant Property Liquids,Water Data
     Option = Pure Substance
     Thermodynamic State = Liquid
     PROPERTIES:
       Option = General Material
       Thermal Expansivity = 2.57E-04 [K^-1]
       ABSORPTION COEFFICIENT:
         Absorption Coefficient = 1.0 [m^-1]
         Option = Value
       END
       DYNAMIC VISCOSITY:
         Dynamic Viscosity = 8.899E-4 [kg m^-1 s^-1]
         Option = Value
       END
       EQUATION OF STATE:
         Density = 997.0 [kg m^-3]
         Molar Mass = 18.02 [kg kmol^-1]
         Option = Value
       END
       REFRACTIVE INDEX:
         Option = Value
         Refractive Index = 1.0 [m m^-1]
       END
       SCATTERING COEFFICIENT:
         Option = Value
         Scattering Coefficient = 0.0 [m^-1]
       END
       SPECIFIC HEAT CAPACITY:
         Option = Value
         Reference Pressure = 1 [atm]
         Reference Specific Enthalpy = 0.0 [J/kg]
         Reference Specific Entropy = 0.0 [J/kg/K]
         Reference Temperature = 25 [C]
         Specific Heat Capacity = 4181.7 [J kg^-1 K^-1]
         Specific Heat Type = Constant Pressure
       END
       THERMAL CONDUCTIVITY:
         Option = Value
         Thermal Conductivity = 0.6069 [W m^-1 K^-1]
       END
     END
   END
END
EXECUTION CONTROL:
   PARALLEL HOST LIBRARY:
     HOST DEFINITION: liuzhanb
       Installation Root = D:\Ansys Inc\CFX\CFX-%v
       Host Architecture String = intel_k6_winnt5.1
     END
   END
   PARTITIONER STEP CONTROL:
     Multidomain Option = Independent Partitioning
     Runtime Priority = Standard
     MEMORY CONTROL:
       Memory Allocation Factor = 1.0
     END
     PARTITIONING TYPE:
       MeTiS Type = k-way
       Option = MeTiS
       Partition Size Rule = Automatic
     END
   END
   RUN DEFINITION:
     Definition File = F:/CFX/Sixth.def
     Interpolate Initial Values = Off
     Run Mode = Full
   END
   SOLVER STEP CONTROL:
     Runtime Priority = Standard
     EXECUTABLE SELECTION:
       Double Precision = Off
     END
     MEMORY CONTROL:
       Memory Allocation Factor = 1.0
     END
     PARALLEL ENVIRONMENT:
       Number of Processes = 1
       Start Method = Serial
     END
   END
END
FLOW:
   DOMAIN: Fluid
     Coord Frame = Coord 0
     Domain Type = Fluid
     Fluids List = Water
     Location = FULID
     BOUNDARY: Sym1
       Boundary Type = SYMMETRY
       Location = SYM.1,SYM.2 A,SYM.3
     END
     BOUNDARY: Wall
       Boundary Type = WALL
       Location = CUB.1,CUB.2,CUB.3
       BOUNDARY CONDITIONS:
         HEAT TRANSFER:
           Option = Adiabatic
         END
         WALL INFLUENCE ON FLOW:
           Option = No Slip
         END
       END
     END
     BOUNDARY: SF Side 1
       Boundary Type = INTERFACE
       Location = SHER 1
       BOUNDARY CONDITIONS:
         HEAT TRANSFER:
           Option = Conservative Interface Flux
         END
         WALL INFLUENCE ON FLOW:
           Option = No Slip
         END
       END
     END
     DOMAIN MODELS:
       BUOYANCY MODEL:
         Buoyancy Reference Temperature = 298 [K]
         Gravity X Component = 0 [m s^-2]
         Gravity Y Component = 0 [m s^-2]
         Gravity Z Component = -9.81 [m s^-2]
         Option = Buoyant
         BUOYANCY REFERENCE LOCATION:
           Option = Automatic
         END
       END
       DOMAIN MOTION:
         Option = Stationary
       END
       MESH DEFORMATION:
         Option = None
       END
       REFERENCE PRESSURE:
         Reference Pressure = 0 [atm]
       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 = Laminar
       END
     END
     INITIALISATION:
       Option = Automatic
       INITIAL CONDITIONS:
         Velocity Type = Cartesian
         CARTESIAN VELOCITY COMPONENTS:
           Option = Automatic with Value
           U = 0 [m s^-1]
           V = 0 [m s^-1]
           W = 0 [m s^-1]
         END
         STATIC PRESSURE:
           Option = Automatic with Value
           Relative Pressure = 1 [atm]
         END
         TEMPERATURE:
           Option = Automatic with Value
           Temperature = 293 [K]
         END
       END
     END
   END
   DOMAIN: Solid
     Domain Type = Solid
     Location = SOLID
     Solids List = Steel
     BOUNDARY: Sym2
       Boundary Type = SYMMETRY
       Location = SYM.2 B,SYM.4,SYM.5
     END
     BOUNDARY: SF Side 2
       Boundary Type = INTERFACE
       Location = SHER 2
       BOUNDARY CONDITIONS:
         HEAT TRANSFER:
           Option = Conservative Interface Flux
         END
         WALL ROUGHNESS:
           Option = Smooth Wall
         END
       END
     END
     DOMAIN MODELS:
       DOMAIN MOTION:
         Option = Stationary
       END
       MESH DEFORMATION:
         Option = None
       END
     END
     INITIALISATION:
       Option = Automatic
       INITIAL CONDITIONS:
         TEMPERATURE:
           Option = Automatic with Value
           Temperature = 1173 [K]
         END
       END
     END
     SOLID MODELS:
       HEAT TRANSFER MODEL:
         Option = Thermal Energy
       END
       THERMAL RADIATION MODEL:
         Option = None
       END
     END
   END
   DOMAIN INTERFACE: SF
     Boundary List1 = SF Side 1
     Boundary List2 = SF Side 2
     Connection Type = Direct
     Interface Type = Fluid Solid
   END
   OUTPUT CONTROL:
     RESULTS:
       File Compression Level = Default
       Option = Standard
     END
   END
   SIMULATION TYPE:
     Option = Transient
     INITIAL TIME:
       Option = Automatic with Value
       Time = 0
     END
     TIME DURATION:
       Option = Total Time
       Total Time = 10 [min]
     END
     TIME STEPS:
       Option = Timesteps
       Timesteps = 0.05
     END
   END
   SOLUTION UNITS:
     Angle Units = [rad]
     Length Units = [m]
     Mass Units = [kg]
     Solid Angle Units = [sr]
     Temperature Units = [K]
     Time Units =
   END
   SOLVER CONTROL:
     ADVECTION SCHEME:
       Option = High Resolution
     END
     CONVERGENCE CONTROL:
       Maximum Number of Coefficient Loops = 10
       Timescale Control = Coefficient Loops
     END
     CONVERGENCE CRITERIA:
       Residual Target = 1.E-4
       Residual Type = RMS
     END
     TRANSIENT SCHEME:
       Option = Second Order Backward Euler
     END
   END
END
COMMAND FILE:
   Version = 10.0
   Results Version = 10.0
END
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