Temperature Issue in OpenFOAM-2.2.0
Dear Foamers,
I am solving impeller case with compressible effects. I am posting my U, p and T files over here. I am getting very low temperature value at outlet. Due to this issue, Impeller efficiency is not coming correct. Please have a look at it and suggest me whether I am using correct boundary conditons or not. And also I am posting the thermophysical properties also. U file: dimensions [0 1 -1 0 0 0 0]; internalField uniform (0 0 1); boundaryField { imp_default { type fixedValue; value uniform (0 0 0); } imp_default_tip_side_small { type fixedValue; value uniform (0 0 0); } imp_default_tip { type fixedValue; value uniform (0 0 0); } imp_hub { type fixedValue; value uniform (0 0 0); } imp_inlet { type pressureInletVelocity; value uniform (0 0 0); } imp_shroud { type rotatingWallVelocity;//fixedValue; axis (0 0 1); origin (0 0 0); omega constant 267.03538; } volute_default { type fixedValue; value uniform (0 0 0); } volute_default_fine { type fixedValue; value uniform (0 0 0); } volute_outlet { type flowRateInletVelocity; massFlowRate -10.27; rho rho; rhoInlet 1.0; } volute_default_small { type fixedValue; value uniform (0 0 0); } int_imp { type cyclicAMI; value uniform (0 0 0); } int_volute { type cyclicAMI; value uniform (0 0 0); } } // ************************************************** *********************** // p file dimensions [1 -1 -2 0 0 0 0]; internalField uniform 101325; boundaryField { imp_default { type zeroGradient; } imp_default_tip_side_small { type zeroGradient; } imp_default_tip { type zeroGradient; } imp_hub { type zeroGradient; } imp_inlet { type totalPressure; p0 uniform 101325; gamma 1.4; } imp_shroud { type zeroGradient; } volute_default { type zeroGradient; } volute_default_fine { type zeroGradient; } volute_outlet { type zeroGradient; } volute_default_small { type zeroGradient; } int_imp { type cyclicAMI; value uniform 0; } int_volute { type cyclicAMI; value uniform 0; } } // ************************************************** *********************** // T file dimensions [0 0 0 1 0 0 0]; internalField uniform 300; boundaryField { imp_default { type zeroGradient; } imp_default_tip_side_small { type zeroGradient; } imp_default_tip { type zeroGradient; } imp_hub { type zeroGradient; } imp_inlet { type totalTemperature; T0 uniform 300; gamma 1.4; } imp_shroud { type zeroGradient; } volute_default { type zeroGradient; } volute_default_fine { type zeroGradient; } volute_outlet { type zeroGradient; } volute_default_small { type zeroGradient; } int_imp { type cyclicAMI; } int_volute { type cyclicAMI; } } // ************************************************** *********************** // thermoPhysicalProperties thermoType { type hePsiThermo; mixture pureMixture; transport sutherland; thermo hConst; equationOfState perfectGas; specie specie; energy sensibleEnthalpy;//InternalEnergy; } mixture { specie { nMoles 1; molWeight 28.9; } thermodynamics { Cp 1005; Hf 0; } transport { As 1.4792e-06; Ts 116; } } Thanks & Regards Prasant. |
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