DISPLAY TWO TUBES IN A SEMI-RECTANGULAR CHAMBER The natural convection around two differently heated tubes placed in an adiabatic rectangular chamber with circular roof is solved here by PARSOL. The case demonstrates the PARSOL 'cut-cell' technique of representing curvilinear shapes in a Cartesian grid. The case considers the natural convection arising in a 2D adiabatic rectangular enclosure. It is covered by the roof of cylindrical shape. Two cylindrical tubes are placed at the bottom part of the chamber. They have different temperatures provoking the gravity-induced circulation in the surrounding air. ENDDIS ************************************************************ Q1 created by VDI menu, Version 3.3, Date 24/07/00 CPVNAM=VDI;SPPNAM=Core ************************************************************ IRUNN = 1 ;LIBREF = 400 ************************************************************ Group 1. Run Title TEXT(Two tubes in a semi-rectangular chamber ) ************************************************************ Group 2. Transience STEADY = T ************************************************************ Groups 3, 4, 5 Grid Information * Overall number of cells, RSET(M,NX,NY,NZ,tolerance) RSET(M,25,25,1) * Set overall domain extent: * xulast yvlast zwlast name XSI= 3.200000E-02; YSI= 3.200000E-02; ZSI= 1.400000E+00 RSET(D,CHAM ) ************************************************************ Group 6. Body-Fitted coordinates ************************************************************ Group 7. Variables: STOREd,SOLVEd,NAMEd ONEPHS = T * Non-default variable names NAME(150) =TEM1 SOLVE(P1 ,U1 ,V1 ,TEM1) * Additional solver options SOLUTN(P1 ,Y,Y,Y,N,N,Y) SOLUTN(TEM1,Y,Y,Y,N,N,Y) ************************************************************ Group 8. Terms & Devices ************************************************************ Group 9. Properties SETPRPS(1, 0) RHO1 = 1.189000E+00 RHO1A = 0.000000E+00 ;RHO1B = 3.496503E-03 RHO1C = 7.142857E-01 PRESS0 = 1.000000E+05 TEMP0 = 2.730000E+02 CP1 = 1.005000E+03 ENUL = 1.544000E-05 ;ENUT = 0.000000E+00 ENULA = 1.460000E-06 ;ENULB = 1.100000E+02 ENULC = 0.000000E+00 DVO1DT = 3.410000E-03 PRNDTL(TEM1) = -2.580000E-02 ************************************************************ Group 10.Inter-Phase Transfer Processes ************************************************************ Group 11.Initialise Var/Porosity Fields No PATCHes used for this Group FIINIT(TEM1)=0.5 * (20.0 + 150.0) INIADD = F ************************************************************ Group 12. Convection and diffusion adjustments No PATCHes used for this Group ************************************************************ Group 13. Boundary & Special Sources PATCH (BUOYANCY,PHASEM,0,0,0,0,0,0,1,1) COVAL (BUOYANCY,U1 , FIXFLU , GRND3 ) COVAL (BUOYANCY,V1 , FIXFLU , GRND3 ) BUOYA = 0.000000E+00 ; BUOYB =-9.810000E+00 BUOYC = 0.000000E+00 BUOYD = 3.410000E-03 BUOYE = 2.000000E+01 EGWF = T ************************************************************ Group 14. Downstream Pressure For PARAB ************************************************************ Group 15. Terminate Sweeps LSWEEP = 350 RESFAC = 1.000000E-03 ************************************************************ Group 16. Terminate Iterations ************************************************************ Group 17. Relaxation RELAX(P1 ,LINRLX, 1.000000E+00) RELAX(U1 ,FALSDT, 1.000000E-01) RELAX(V1 ,FALSDT, 1.000000E-01) RELAX(TEM1,FALSDT, 1.000000E+01) ************************************************************ Group 18. Limits VARMAX(U1 ) = 1.000000E+06 ;VARMIN(U1 ) =-1.000000E+06 VARMAX(V1 ) = 1.000000E+06 ;VARMIN(V1 ) =-1.000000E+06 VARMAX(TEM1) = 1.000000E+10 ;VARMIN(TEM1) = 2.000000E+01 ************************************************************ Group 19. EARTH Calls To GROUND Station USEGRD = T ;USEGRX = T ASAP = T LSG3 = T CSG3 ='FGEM' ************************************************************ Group 20. Preliminary Printout ECHO = T ************************************************************ Group 21. Print-out of Variables OUTPUT(P1 ,Y,Y,Y,N,Y,Y) OUTPUT(U1 ,Y,Y,Y,N,Y,Y) OUTPUT(V1 ,Y,Y,Y,N,Y,Y) ************************************************************ Group 22. Monitor Print-Out IXMON = 13 ;IYMON = 6 ;IZMON = 1 NPRMON = 100000 NPRMNT = 1 TSTSWP = -1 ************************************************************ Group 23.Field Print-Out & Plot Control NPRINT = 100000 ISWPRF = 1 ;ISWPRL = 100000 No PATCHes used for this Group ************************************************************ Group 24. Dumps For Restarts NOWIPE = T GVIEW(P,0.000000E+00,0.000000E+00,-1.000000E+00) GVIEW(UP,0.000000E+00,1.000000E+00,0.000000E+00) > DOM, SIZE, 3.200000E-02, 3.200000E-02, 1.400000E+00 > DOM, MONIT, 1.550000E-02, 7.500000E-03, 7.000000E-01 > DOM, SCALE, 1.000000E+00, 1.000000E+00, 3.000000E-02 > DOM, SNAPSIZE, 1.000000E-03 > DOM, RELAX, 5.000000E-01 > OBJ1, NAME, B2 > OBJ1, POSITION, 1.600000E-02, 1.600000E-02, 0.000000E+00 > OBJ1, SIZE, 1.600000E-02, 1.600000E-02, 1.400000E+00 > OBJ1, CLIPART, hh1 > OBJ1, ROTATION24, 1 > OBJ1, GRID, 2.000000E+00 > OBJ1, TYPE, BLOCKAGE > OBJ1, MATERIAL, 198 > OBJ2, NAME, B3 > OBJ2, POSITION, 0.000000E+00, 1.600000E-02, 0.000000E+00 > OBJ2, SIZE, 1.600000E-02, 1.600000E-02, 1.400000E+00 > OBJ2, CLIPART, hh1 > OBJ2, ROTATION24, 2 > OBJ2, GRID, 2.000000E+00 > OBJ2, TYPE, BLOCKAGE > OBJ2, MATERIAL, 198 > OBJ3, NAME, B6 > OBJ3, POSITION, 4.999997E-03, 7.300000E-03, 0.000000E+00 > OBJ3, SIZE, 8.000000E-03, 8.000000E-03, 1.400000E+00 > OBJ3, CLIPART, cylinder > OBJ3, ROTATION24, 1 > OBJ3, GRID, 2.000000E+00 > OBJ3, TYPE, BLOCKAGE > OBJ3, MATERIAL, 100 > OBJ3, FIXED_TMP, 0.000000E+00, 2.000000E+01 > OBJ4, NAME, B7 > OBJ4, POSITION, 3.200001E-03, 1.440001E-02, 0.000000E+00 > OBJ4, SIZE, 1.600000E-03, 1.600000E-03, 1.400000E+00 > OBJ4, CLIPART, cubet > OBJ4, ROTATION24, 1 > OBJ4, VISIBLE, -1.000000E+00 > OBJ4, TYPE, PRESSURE_RELIEF > OBJ4, PRES_RELIEF, 1.000000E+03, 0.000000E+00 > OBJ5, NAME, B8 > OBJ5, POSITION, 1.900001E-02, 7.300000E-03, 0.000000E+00 > OBJ5, SIZE, 8.000000E-03, 8.000000E-03, 1.400000E+00 > OBJ5, CLIPART, cylinder > OBJ5, ROTATION24, 1 > OBJ5, GRID, 2.000000E+00 > OBJ5, TYPE, BLOCKAGE > OBJ5, MATERIAL, 100 > OBJ5, FIXED_TMP, 0.000000E+00, 1.500000E+02 STOP distil=t EX(P1 )= 2.133E-02 EX(U1 )= 1.225E-02 EX(V1 )= 1.384E-02 EX(PRPS)= 2.152E+01 EX(TEM1)= 8.837E+01