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July 11, 2001, 10:54 |
Help!
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#1 |
Guest
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I want to simulate the liquid steel flow in a Ladle stirred by Ar injeted from the bottem. But the result is wrong! The below is my fc file:
>> CFX4 #CALC RHOL = 1000.; /* Properties */ RHOG = 1.28; VISL = 1.0E-3; VISG = 1.0E-5; SRFTEN = 0.025; BUBDIA = 2.0E-3; U1 = 0.0; /* Inlet */ U2 = 0.0; V1 = 0.0; V2 = 0.0; W1 = 0.0; W2 = 0.0; VF2 = 0.01; VF1 = 1.0-VF2; DIAM = 0.1; #ENDCALC >> OPTIONS NUMBER OF PHASES 2 BUOYANT FLOW TURBULENT FLOW END >> MODEL DATA >> PHYSICAL PROPERTIES >> BUOYANCY PARAMETERS GRAVITY VECTOR 0.0 -9.8 0. BUOYANCY REFERENCE DENSITY #RHOG END >> FLUID PARAMETERS PHASE NAME 'PHASE1' VISCOSITY #VISL DENSITY #RHOL END >> FLUID PARAMETERS PHASE NAME 'PHASE2' VISCOSITY #VISG DENSITY #RHOG END >> TURBULENCE PARAMETERS >> TURBULENCE MODEL PHASE NAME 'PHASE1' TURBULENCE MODEL 'K-EPSILON' PARTICLE INDUCED TURBULENCE 'NONE' END >> TURBULENCE MODEL PHASE NAME 'PHASE2' TURBULENCE MODEL 'K-EPSILON' PARTICLE INDUCED TURBULENCE 'NONE' END >> TURBULENCE CONSTANTS CMUPI 0.6 >> MULTIPHASE PARAMETERS >> PHASE DESCRIPTION PHASE NAME 'PHASE1' LIQUID CONTINUOUS END >> PHASE DESCRIPTION PHASE NAME 'PHASE2' GAS DISPERSE MEAN DIAMETER #BUBDIA END >> MULTIPHASE MODELS >> MOMENTUM INTER PHASE TRANSFER IPSAC END >> INTER PHASE TRANSFER MODELS >>MOMENTUM FIRST PHASE NAME 'PHASE1' SECOND PHASE NAME 'PHASE2' SURFACE TENSION COEFFICIENT #SRFTEN >>PARTICLE DRAG MODEL FLOW REGIME 'DISTORTED' END >>NON DRAG FORCES LIFT FORCE LIFT COEFFICIENT 0.03 WALL LUBRICATION FORCE LUBRICATION COEFFICIENTS -0.01 0.05 TURBULENT DISPERSION FORCE DISPERSION COEFFICIENT 0.1 END >> AMBIENT VARIABLES PHASE NAME 'PHASE1' U VELOCITY #U1 V VELOCITY #V1 W VELOCITY #W1 VOLUME FRACTION #VF1 END >> AMBIENT VARIABLES PHASE NAME 'PHASE2' U VELOCITY 0.0 V VELOCITY 0.0 W VELOCITY 0.0 VOLUME FRACTION #VF2 END >> SOLVER DATA >> PROGRAM CONTROL MAXIMUM NUMBER OF ITERATIONS 500 MASS SOURCE TOLERANCE 1.0E-10 END >> EQUATION SOLVERS PRESSURE 'AMG' END >> UNDER RELAXATION FACTORS U VELOCITY 6.5000E-01 V VELOCITY 6.5000E-01 W VELOCITY 6.5000E-01 PRESSURE 1.0000E+00 VOLUME FRACTION 0.6000E+00 VISCOSITY 1.0000E+00 K 3.0000E-01 EPSILON 3.0000E-01 >> FALSE TIMESTEPS U VELOCITY 1.0E-1 V VELOCITY 1.0E-1 W VELOCITY 1.0E-1 END >> MODEL BOUNDARY CONDITIONS >> INLET BOUNDARIES PATCH NAME 'INLET' PHASE NAME 'PHASE1' U VELOCITY #U1 V VELOCITY #V1 VOLUME FRACTION #VF1 >> INLET BOUNDARIES PATCH NAME 'INLET' PHASE NAME 'PHASE2' NORMAL VELOCITY 23.1 VOLUME FRACTION #VF2 >> WALL BOUNDARIES PATCH NAME 'WALLB' PHASE NAME 'PHASE1' TAUX 0.0 TAUY 0.0 END >> WALL BOUNDARIES PATCH NAME 'WALLOUT' PHASE NAME 'PHASE2' TAUX 0.0 TAUY 0.0 END :> STOP What's the wrong? |
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July 11, 2001, 17:37 |
Re: Help!
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#2 |
Guest
Posts: n/a
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Could you be more specific? Do you have a preliminary error or is the result unphysical?
At least replace :>STOP with >>STOP Regs, Gert-Jan |
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July 12, 2001, 03:43 |
Re: Help!
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#3 |
Guest
Posts: n/a
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Oh, sorry! the ":" was a mistake made by me when post this message.
My project is a Ladle(a cylinder) in which Liquid Steel is. AIR(or Ar)is injetted into the ladle from a little inlet on the bottom(the Velocity is about 20~30 m/s). And the top of the ladle(above liquid steel) is also air(quiescent). Regs, |
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