TALK=T;RUN( 1, 1)
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Q1 created by VDI menu, Version 2025, Date 03/02/25
CPVNAM=VDI; SPPNAM=Core
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Echo DISPLAY / USE settings
DISPLAY
The case considered is 2D, steady, incompressible, turbulent flow
past a surface-mounted square rib in a channel. It is the
equivalent of library case t307, using the high Reynolds-number
form of the Spalart-Allmaras turbulence model, with scalable wall
functions.
This case has been studied experimentally by D.Crabb et al, Proc.
4th Brazilian Congress on Mech. Engng., Florianopolis, Brazil,
p415,(1997).
The height H of the rib is 8.5% of that of the channel. The flow
Reynolds number based on channel bulk velocity and rib height
H is 300,000. The inlet plane is located 6H upstream of the rib,
and the outlet plane 20H downstream of the rib. A fixed-pressure
boundary condition is applied at the outlet, and uniform flow
profiles are specified at the inlet.
For this case, the main parameter characterising separation is
the length of the separation zone behind the rib. The experimental
and computed results are:
SA EXPT
Lr/H = 14.1 12.3
where the separation length Lr is measured from the front of the
rib. These results are not grid independent, and the mesh is not
fine enough to resolve the separation regions around the rib.
ENDDIS
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IRUNN = 1 ;LIBREF = 307
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Group 1. Run Title
TEXT(High Reynolds S-A Square Rib Flow )
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Group 2. Transience
STEADY = T
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Groups 3, 4, 5 Grid Information
* Overall number of cells, RSET(M,NX,NY,NZ,tolerance)
RSET(M,1,90,110)
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Group 6. Body-Fitted coordinates
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Group 7. Variables: STOREd,SOLVEd,NAMEd
* Non-default variable names
NAME(140)=WDIS ;NAME(141)=PRPS
NAME(142)=YPLS ;NAME(144)=DWDZ
NAME(145)=DWDY ;NAME(146)=DVDZ
NAME(147)=DVDY ;NAME(148)=VOR1
NAME(150) =ENUT
* Solved variables list
SOLVE(P1,V1,W1)
* Stored variables list
STORE(ENUT,VOR1,DVDY,DVDZ,DWDY,DWDZ,YPLS,PRPS)
STORE(WDIS)
* Additional solver options
SOLUTN(P1,Y,Y,Y,N,N,N)
SOLUTN(V1,Y,Y,Y,N,N,N)
SOLUTN(W1,Y,Y,Y,N,N,N)
TURMOD(SPALART-ALLMARAS)
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Group 8. Terms & Devices
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Group 9. Properties
RHO1 =1.
ENUL =3.333333E-06
CP1 =1.
PRT(ENTI)=0.666667
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Group 10.Inter-Phase Transfer Processes
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Group 11.Initialise Var/Porosity Fields
FIINIT(P1)=1.3E-04 ;FIINIT(V1)=1.0E-03
FIINIT(W1)=1. ;FIINIT(WDIS)=0.1
FIINIT(PRPS)=-1. ;FIINIT(YPLS)=1.001E-10
FIINIT(DWDZ)=1.001E-10 ;FIINIT(DWDY)=1.001E-10
FIINIT(DVDZ)=1.001E-10 ;FIINIT(DVDY)=1.001E-10
FIINIT(ENTI)=0.01338 ;FIINIT(ENUT)=1.001E-10
No PATCHes used for this Group
INIADD = F
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Group 12. Convection and diffusion adjustments
No PATCHes used for this Group
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Group 13. Boundary & Special Sources
No PATCHes used for this Group
EGWF = T
SCALWF = T
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Group 14. Downstream Pressure For PARAB
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Group 15. Terminate Sweeps
LSWEEP = 3000
RESFAC =1.0E-05
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Group 16. Terminate Iterations
LITER(P1)=50
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Group 17. Relaxation
RELAX(P1 ,LINRLX,1. )
RELAX(V1 ,FALSDT,0.122727 )
RELAX(W1 ,FALSDT,0.122727 )
RELAX(ENTI,LINRLX,0.5 )
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Group 18. Limits
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Group 19. EARTH Calls To GROUND Station
PARSOL = F
ISG62 = 1
SPEDAT(SET,OUTPUT,NOFIELD,L,T)
SPEDAT(SET,GXMONI,PLOTALL,L,T)
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Group 20. Preliminary Printout
DISTIL = T ;NULLPR = F
NDST = 0
DSTTOL =1.0E-02
EX(P1)=0.1601 ;EX(V1)=0.07715
EX(W1)=0.7934 ;EX(WDIS)=1.56
EX(PRPS)=0.9661 ;EX(YPLS)=5.442
EX(LTLS)=6.637 ;EX(DWDZ)=0.07578
EX(DWDY)=0.3101 ;EX(DVDZ)=0.05147
EX(DVDY)=0.07723 ;EX(VOR1)=0.3166
EX(ENTI)=0.01077 ;EX(ENUT)=0.01077
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Group 21. Print-out of Variables
OUTPUT(ENUT,Y,N,Y,N,Y,Y)
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Group 22. Monitor Print-Out
IXMON = 1 ;IYMON = 30 ;IZMON = 56
NPRMON = 100
NPRMNT = 1
TSTSWP = -1
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Group 23.Field Print-Out & Plot Control
NPRINT = 100000
NYPRIN = 4
NZPRIN = 4
IPLTF = 1 ;IPLTL = 1800
NPLT = 25
ISWPRF = 1 ;ISWPRL = 100000
No PATCHes used for this Group
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Group 24. Dumps For Restarts
GVIEW(P,-1.,0.,0.)
GVIEW(UP,0.,1.,0.)
GVIEW(WINDOW,MAX)
GVIEW(DEPTH,1000.)
GVIEW(VDIS,6.957021)
GVIEW(CENTRE,0.5,0.157665,7.509542)
> DOM, SIZE, 1.000000E+00, 1.175000E+01, 2.700000E+01
> DOM, MONIT, 5.000000E-01, 1.067108E+00, 7.799150E+00
> DOM, SCALE, 1.000000E+00, 1.000000E+00, 1.000000E+00
> DOM, INCREMENT, 1.000000E-02, 1.000000E-02, 1.000000E-02
> GRID, RSET_X_1, 1, 1.000000E+00
> GRID, RSET_Y_1, 28, 1.000000E+00
> GRID, RSET_Y_2, -62, 1.080000E+00,G
> GRID, RSET_Z_1, 34,-1.050000E+00,G
> GRID, RSET_Z_2, 12, 1.000000E+00
> GRID, RSET_Z_3, 64, 1.040000E+00,G
> DOM, T_AMBIENT, 0.000000E+00
> OBJ, NAME, RIB
> OBJ, POSITION, 0.000000E+00, 0.000000E+00, 6.000000E+00
> OBJ, SIZE, 1.000000E+00, 1.000000E+00, 9.999990E-01
> OBJ, GEOMETRY, box
> OBJ, TYPE, BLOCKAGE
> OBJ, MATERIAL, 198,Solid with smooth-wall friction
> OBJ, NAME, INLET
> OBJ, POSITION, 0.000000E+00, 0.000000E+00, 0.000000E+00
> OBJ, SIZE, 1.000000E+00, 1.175000E+01, 0.000000E+00
> OBJ, GEOMETRY, box
> OBJ, TYPE, INLET
> OBJ, PRESSURE, P_AMBIENT
> OBJ, VELOCITY, 0. ,0. ,1.
> OBJ, ENTI_IN, 1.338000E-02
> OBJ, NAME, OUTL
> OBJ, POSITION, 0.000000E+00, 0.000000E+00, 2.699999E+01
> OBJ, SIZE, 1.000000E+00, 1.175000E+01, 0.000000E+00
> OBJ, GEOMETRY, box
> OBJ, TYPE, OUTLET
> OBJ, PRESSURE, 0.
> OBJ, COEFFICIENT, 1000.
> OBJ, TURBULENCE, 0. ,0.
> OBJ, NAME, WALLN
> OBJ, POSITION, 0.000000E+00, 1.175000E+01, 0.000000E+00
> OBJ, SIZE, 1.000000E+00, 0.000000E+00, 2.699999E+01
> OBJ, GEOMETRY, box
> OBJ, TYPE, PLATE
> OBJ, NAME, WALLS
> OBJ, POSITION, 0.000000E+00, 0.000000E+00, 0.000000E+00
> OBJ, SIZE, 1.000000E+00, 0.000000E+00, 2.699999E+01
> OBJ, GEOMETRY, box
> OBJ, TYPE, PLATE
STOP