TALK=T;RUN(1,1)
photon use
p
p1
msg the 40*40*625 computational grid
msg the 625-cell direction is normal to the screen
gr z 1; pause; gr off; red
gr ou z 1
msg Upstream smoke injection region and smoke contours
gr z 1 x 18 23 y 18 23
con h1 z 1 fi;0.1
pause
p
p2
msg Smoke contours 1/5 of distance along tunnel
con h1 z 1 fi;0.1
pause
p
p3
msg Smoke contours 2/5 of distance along tunnel
con h1 z 1 fi;0.1
pause
p
p4
msg Smoke contours 3/5 of distance along tunnel
con h1 z 1 fi;0.1
pause
p
p5
msg Smoke contours 4/5 of distance along tunnel
con h1 z 1 fi;0.1
pause
p
phi
msg Smoke contours 5/5 of distance along tunnel
con h1 z 1 fi;0.1
pause;con off;red
msg contours of longitudinal velocity at tunnel exit
con w1 z 1 fi;0.1
pause
con off
red
msg velocity vectors at the tunnel exit
set vec ref 0.1
vec z 1 sh
enduse
DISPLAY
This case shows how the parabolic option can be enployed with
advantage for fine-grid calculations on machines of modest size.
The problem concerns the way in which a smoke plume rises as
it is carried within a wind-tunnel having an imposed shear-flow
velocity profile at inlet.
The cross-stream grid is 40 * 40, and there are 625 z-direction
intervals, so that one million cells feature in the calculation.
The calculation is rather lengthy, but a tolerably good answer
can be obtained by halving the grid fineness in every direction
and reducing the number of iterations.
Also, since the flow is symmetrical, only one half needs to be
simulated; but both halves are simulated so as to demonstrate that
a truly symmetrical solution is indeed arrived at.
ENDDIS
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************
TEXT(Buoyant Plume in tunnel, 1.0E+06 Cells )
************************************************************
************************************************************
IRUNN = 1 ;LIBREF = 14
************************************************************
Group 2. Time dependence
STEADY = T
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 40
XULAST =1.5
XFRAC(1)=0.025 ;XFRAC(9)=0.225
XFRAC(17)=0.425 ;XFRAC(25)=0.625
XFRAC(33)=0.825
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 40
YVLAST =1.
YFRAC(1)=0.025 ;YFRAC(9)=0.225
YFRAC(17)=0.425 ;YFRAC(25)=0.625
YFRAC(33)=0.825
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = T
NZ = 625
ZWLAST =15.625
Method of pairs used for grid setting.
ZFRAC(2)=1.6E-03
************************************************************
Group 6. Body-Fitted Coordinates
************************************************************
Group 7. Variables: STOREd,SOLVEd,NAMEd
ONEPHS = T
NAME(1)=P1 ;NAME(3)=U1
NAME(5)=V1 ;NAME(7)=W1
NAME(14)=H1
* Y in SOLUTN argument list denotes:
* 1-stored 2-solved 3-whole-field
* 4-point-by-point 5-explicit 6-harmonic averaging
SOLUTN(P1,Y,Y,N,N,N,Y)
SOLUTN(U1,Y,Y,N,N,N,Y)
SOLUTN(V1,Y,Y,N,N,N,Y)
SOLUTN(W1,Y,Y,N,N,N,Y)
SOLUTN(H1,Y,Y,N,N,N,Y)
************************************************************
Group 8. Terms & Devices
* Y in TERMS argument list denotes:
* 1-built-in source 2-convection 3-diffusion 4-transient
* 5-first phase variable 6-interphase transport
TERMS(P1,Y,Y,Y,N,Y,Y)
TERMS(U1,Y,Y,Y,Y,Y,Y)
TERMS(V1,Y,Y,Y,Y,Y,Y)
TERMS(W1,Y,Y,Y,Y,Y,Y)
TERMS(H1,N,Y,Y,Y,Y,Y)
DIFCUT =0.5 ;ZDIFAC =1.
GALA = F ;ADDDIF = F
NEWRH1 = T
ISOLX = -1 ;ISOLY = -1 ;ISOLZ = -1
************************************************************
Group 9. Properties used if PRPS is not
stored, and where PRPS = -1.0 if it is!
RHO1 = GRND4 ;TMP1 = GRND2 ;EL1 =0.
TSURR =0. ;TEMP0 =0. ;PRESS0 =0.
DVO1DT =0. ;DRH1DP =0.
RHO1A =1. ;RHO1B =-0.02 ;RHO1C =0.
TMP1A =0. ;TMP1B =0. ;TMP1C =0.
TMP2A =0. ;TMP2B =0. ;TMP2C =0.
EMISS =0. ;SCATT =0.
RADIA =0. ;RADIB =0.
ENUL =1.0E-05 ;ENUT =0.
PRNDTL(U1)=1. ;PRNDTL(V1)=1.
PRNDTL(W1)=1. ;PRNDTL(H1)=0.7
PRT(U1)=1. ;PRT(V1)=1.
PRT(W1)=1. ;PRT(H1)=1.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=0. ;FIINIT(U1)=0.
FIINIT(V1)=0. ;FIINIT(W1)=1.0E-10
FIINIT(H1)=0.
No PATCHes yet used for this Group
INIADD = F
FSWEEP = 1
NAMFI =CHAM
************************************************************
Group 12. Patchwise adjustment of terms
Patches for this group are printed with those
for Group 13.
Their names begin either with GP12 or &
************************************************************
Group 13. Boundary & Special Sources
PATCH(INLET1 ,LOW , 1, 40, 1, 8, 1, 1, 1, 1)
COVAL(INLET1 ,P1 , FIXFLU ,0.8 )
COVAL(INLET1 ,W1 ,0. ,0.8 )
COVAL(INLET1 ,H1 ,0. ,0. )
PATCH(INLET2 ,LOW , 1, 40, 9, 16, 1, 1, 1, 1)
COVAL(INLET2 ,P1 , FIXFLU ,0.9 )
COVAL(INLET2 ,W1 ,0. ,0.9 )
PATCH(INLET3 ,LOW , 1, 40, 17, 24, 1, 1, 1, 1)
COVAL(INLET3 ,P1 , FIXFLU ,1. )
COVAL(INLET3 ,W1 ,0. ,1. )
PATCH(INLET4 ,LOW , 1, 40, 25, 32, 1, 1, 1, 1)
COVAL(INLET4 ,P1 , FIXFLU ,1.1 )
COVAL(INLET4 ,W1 ,0. ,1.1 )
PATCH(INLET5 ,LOW , 1, 40, 33, 40, 1, 1, 1, 1)
COVAL(INLET5 ,P1 , FIXFLU ,1.2 )
COVAL(INLET5 ,W1 ,0. ,1.2 )
PATCH(SMOKE ,LOW , 18, 23, 18, 23, 1, 1, 1, 1)
COVAL(SMOKE ,P1 , FIXFLU ,1.0E-02 )
COVAL(SMOKE ,W1 ,0. ,1.0E-02 )
COVAL(SMOKE ,H1 ,0. ,100. )
PATCH(BUOYANCY,PHASEM, 1, 40, 1, 40, 1, 625, 1, 1)
COVAL(BUOYANCY,V1 , FIXFLU ,-9.81 )
PATCH(BOTTOM ,SWALL , 1, 40, 1, 1, 1, 625, 1, 1)
COVAL(BOTTOM ,U1 ,1. ,0. )
COVAL(BOTTOM ,W1 ,1. ,0. )
PATCH(TOP ,NWALL , 1, 40, 40, 40, 1, 625, 1, 1)
COVAL(TOP ,U1 ,1. ,0. )
COVAL(TOP ,W1 ,1. ,0. )
PATCH(WEST ,WWALL , 1, 1, 1, 40, 1, 625, 1, 1)
COVAL(WEST ,V1 ,1. ,0. )
COVAL(WEST ,W1 ,1. ,0. )
PATCH(EAST ,EWALL , 40, 40, 1, 40, 1, 625, 1, 1)
COVAL(EAST ,V1 ,1. ,0. )
COVAL(EAST ,W1 ,1. ,0. )
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
IPARAB = 0
AZPH =0. ;PBAR =0.
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 1 ;ISWC1 = 1
LITHYD = 100 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-05
************************************************************
Group 16. Terminate Iterations
LITER(P1)=100 ;LITER(U1)=10
LITER(V1)=10 ;LITER(W1)=10
LITER(H1)=10
ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-06
ENDIT(V1)=1.0E-06 ;ENDIT(W1)=1.0E-03
ENDIT(H1)=1.0E-06
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(U1,FALSDT,0.1)
RELAX(V1,FALSDT,0.05)
RELAX(W1,FALSDT,0.1)
RELAX(H1,FALSDT,0.1)
OVRRLX =1.7
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
VARMAX(P1)=1.0E+10 ;VARMIN(P1)=-1.0E+10
VARMAX(U1)=1.0E+06 ;VARMIN(U1)=-1.0E+06
VARMAX(V1)=1.0E+06 ;VARMIN(V1)=-1.0E+06
VARMAX(W1)=1.0E+06 ;VARMIN(W1)=-1.0E+06
VARMAX(H1)=1.0E+10 ;VARMIN(H1)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
IDISPD = 125
ISG62 = 1
SPEDAT(SET,GXMONI,PLOTALL,L,T)
************************************************************
Group 20. Preliminary Printout
************************************************************
Group 21. Print-out of Variables
INIFLD = F ;SUBWGR = F
* Y in OUTPUT argument list denotes:
* 1-field 2-correction-eq. monitor 3-selective dumping
* 4-whole-field residual 5-spot-value table 6-residual table
OUTPUT(P1,Y,Y,Y,Y,Y,Y)
OUTPUT(U1,Y,Y,Y,Y,Y,Y)
OUTPUT(V1,Y,Y,Y,Y,Y,Y)
OUTPUT(W1,Y,Y,Y,Y,Y,Y)
OUTPUT(H1,Y,Y,Y,Y,Y,Y)
************************************************************
Group 22. Monitor Print-Out
IXMON = 20 ;IYMON = 20 ;IZMON = 1
NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -5
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NXPRIN = 8 ;IXPRF = 1 ;IXPRL = 10000
NYPRIN = 8 ;IYPRF = 1 ;IYPRL = 10000
NZPRIN = 625 ;IZPRF = 1 ;IZPRL = 10000
IPLTF = 1 ;IPLTL = -1 ;NPLT = 100
ISWPRF = 1 ;ISWPRL = 100000
ITABL = 3 ;IPROF = 1
ABSIZ =0.5 ;ORSIZ =0.4
NTZPRF = 1 ;NCOLPF = 50
ICHR = 2 ;NCOLCO = 45 ;NROWCO = 20
No PATCHes yet used for this Group
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
STOP