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April 3, 2002, 06:27 |
CFX 4.4 New free surface option
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Hi
I have tried to use new option "FREE SURFACE GRID MOVEMENT" of CFX 4.4. The result obtained is different from result with using symmetry plain in place of free surface. Problem is that I could not see the greed change of free surface in postprocessor (Analyse). Is it normal or not? Any suggestions? Thanks in advice. Viatcheslav. Citrate from command file: >>CFX4 :>OPTIONS FREE SURFACE GRID MOVEMENT :>USER FORTRAN USRBCS :>MODEL TOPOLOGY :>MODIFY PATCH OLD PATCH NAME 'USER3D_SURFACE_REGION' NEW PATCH NAME 'SURFACE REGION' :>MODIFY PATCH OLD PATCH NAME 'USER2D_FREE_SURFACE' NEW PATCH NAME 'FREE SURFACE' /* NEW PATCH TYPE 'SYMMET' */ :>MODIFY PATCH OLD PATCH NAME 'USER2D_BASE_SURFACE' NEW PATCH NAME 'BASE SURFACE' :>MODEL DATA :>PHYSICAL PROPERTIES >>BUOYANCY PARAMETERS GRAVITY VECTOR 0. 0. -9.81 THERMAL EXPANSION COEFFICIENT 1.216E-4 BUOYANCY REFERENCE TEMPERATURE 350. :>SOLVER DATA :>PROGRAM CONTROL PRESSURE REFERENCE POSITION 0.000001 2.39 -2.300001 /* AT FREE SURFACE */ :>FALSE TIMESTEPS U VELOCITY 0.05 V VELOCITY 0.05 W VELOCITY 0.05 :>CREATE GRID :>FREE SURFACE GRID PARAMETERS CONVECTION CONTROLLED FALSE TIME STEP 0.05 Z VERTICAL :>MODEL BOUNDARY CONDITIONS :>INLET BOUNDARIES PATCH NAME 'USER2D_RISER_OUTLET' NORMAL VELOCITY 0.879221 Citrate from usrbcs.f: C-- INTERROGATE GETVAR FOR VARIABLE NUMBERS. C CALL GETVAR('USRBCS','P ',IPRESS) C C SET IPHS = 1 FOR SINGLE PHASE FLOW. C IPHS = 1 C C USE IPALL TO FIND 1D ADDRESSES OF ALL CELL CENTRES AT FREE SURFACE CALL IPALL('FREE SURFACE','*','PATCH','CENTRES', # IPT,NPT,CWORK,IWORK) C LOOP OVER ALL INTERIOR CELLS DO 110 I=1,NPT C USE ARRAY IPT TO GET ADDRESS INODE=IPT(I) C SET VARBCS VARBCS(IPRESS,IPHS,INODE) = 0.0 110 CONTINUE |
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