TALK=T;RUN(1,1)
DISPLAY
This simulation concerns 2d incompressible, turbulent flow
over a backward-facing step in a closed channel. The edge of the
step provides a fixed point of flow separation.The case is
similar to library case 290, except the calculation is performed
in the Y-Z plane.
The geometry considered has a expansion ratio of 1.5 and an
exit width of 3h, where h is the step height. The calculations
are started at x= -4h and terminated at x=16h, where a fixed-
pressure boundary condition is applied. The Reynolds number based
on the step height is 45,000 and uniform profiles of u, k and e
are specified at the inlet to the calculation domain. Scalable
equilibrium wall functions are used in the simulations.
For this case, the standard form of the k-e model is known to
underpredict the reattachment length XR by about 14%. Calculations
may be made with the high-Re forms of the standard, Chen-Kim, RNG
and realisable k-e models; the Wilcox 1988 & 2008 k-w models, and
the Menter k-w and k-w SST models.
ENDDIS
AUTOPLOT USE
file
phida 3
da 1 W1 y 1
divide x .0381 1
shift x -4 1
col9 1
level y 0;level x 0
scale x 0 15
msg Velocity (W1) profile
msg Press e to END
ENDUSE
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************
TEXT(K-W_BKWRD FACING STEP Y-Z :T110 )
************************************************************
************************************************************
IRUNN = 1 ;LIBREF = 110
************************************************************
Group 2. Time dependence
STEADY = T
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 1
XULAST =1.
XFRAC(1)=1.
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 60
YVLAST =0.1143
YFRAC(1)=9.911756E-03 ;YFRAC(3)=0.031247
YFRAC(5)=0.054769 ;YFRAC(7)=0.080702
YFRAC(9)=0.109293 ;YFRAC(11)=0.140814
YFRAC(13)=0.175567 ;YFRAC(15)=0.208664
YFRAC(17)=0.238685 ;YFRAC(19)=0.265914
YFRAC(21)=0.290612 ;YFRAC(23)=0.313014
YFRAC(25)=0.333333 ;YFRAC(27)=0.358655
YFRAC(29)=0.386572 ;YFRAC(31)=0.41735
YFRAC(33)=0.451283 ;YFRAC(35)=0.488694
YFRAC(37)=0.52994 ;YFRAC(39)=0.575414
YFRAC(41)=0.625549 ;YFRAC(43)=0.680822
YFRAC(45)=0.733463 ;YFRAC(47)=0.781211
YFRAC(49)=0.824519 ;YFRAC(51)=0.863801
YFRAC(53)=0.899431 ;YFRAC(55)=0.931748
YFRAC(57)=0.961061 ;YFRAC(59)=0.987648
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = F
NZ = 90
ZWLAST =0.762
ZFRAC(1)=0.013333 ;ZFRAC(3)=0.04
ZFRAC(5)=0.066667 ;ZFRAC(7)=0.093333
ZFRAC(9)=0.12 ;ZFRAC(11)=0.146667
ZFRAC(13)=0.173333 ;ZFRAC(15)=0.2
ZFRAC(17)=0.209462 ;ZFRAC(19)=0.219306
ZFRAC(21)=0.229548 ;ZFRAC(23)=0.240203
ZFRAC(25)=0.251289 ;ZFRAC(27)=0.262823
ZFRAC(29)=0.274823 ;ZFRAC(31)=0.287308
ZFRAC(33)=0.300297 ;ZFRAC(35)=0.313811
ZFRAC(37)=0.32787 ;ZFRAC(39)=0.342498
ZFRAC(41)=0.357717 ;ZFRAC(43)=0.37355
ZFRAC(45)=0.390024 ;ZFRAC(47)=0.407162
ZFRAC(49)=0.424994 ;ZFRAC(51)=0.443545
ZFRAC(53)=0.462846 ;ZFRAC(55)=0.482927
ZFRAC(57)=0.503819 ;ZFRAC(59)=0.525555
ZFRAC(61)=0.548169 ;ZFRAC(63)=0.571697
ZFRAC(65)=0.596176 ;ZFRAC(67)=0.621643
ZFRAC(69)=0.648139 ;ZFRAC(71)=0.675706
ZFRAC(73)=0.704386 ;ZFRAC(75)=0.734225
ZFRAC(77)=0.76527 ;ZFRAC(79)=0.797568
ZFRAC(81)=0.831172 ;ZFRAC(83)=0.866133
ZFRAC(85)=0.902507 ;ZFRAC(87)=0.94035
ZFRAC(89)=0.979722
************************************************************
Group 6. Body-Fitted Coordinates
************************************************************
Group 7. Variables: STOREd,SOLVEd,NAMEd
ONEPHS = T
NAME(1)=P1 ;NAME(5)=V1
NAME(7)=W1 ;NAME(145)=PRPS
NAME(146)=STRS ;NAME(147)=VABS
NAME(148)=YPLS ;NAME(149)=SKIN
NAME(150)=ENUT
* 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,Y,N,N,N)
SOLUTN(V1,Y,Y,N,N,N,N)
SOLUTN(W1,Y,Y,N,N,N,N)
SOLUTN(PRPS,Y,N,N,N,N,Y)
SOLUTN(STRS,Y,N,N,N,N,Y)
SOLUTN(VABS,Y,N,N,N,N,Y)
SOLUTN(YPLS,Y,N,N,N,N,Y)
SOLUTN(SKIN,Y,N,N,N,N,Y)
SOLUTN(ENUT,Y,N,N,N,N,Y)
VIST = 150
PRPS = 145
************************************************************
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(V1,Y,Y,Y,Y,Y,Y)
TERMS(W1,Y,Y,Y,Y,Y,Y)
DIFCUT =0.5 ;ZDIFAC =1.
GALA = F ;ADDDIF = F
ISOLX = -1 ;ISOLY = -1 ;ISOLZ = -1
************************************************************
Group 9. Properties used if PRPS is not
stored, and where PRPS = -1.0 if it is!
RHO1 =1. ;TMP1 =0. ;EL1 =0.
TSURR =0. ;TEMP0 =0. ;PRESS0 =0.
DVO1DT =0. ;DRH1DP =0.
EMISS =0. ;SCATT =0.
RADIA =0. ;RADIB =0.
ENUL =1.100667E-05 ;ENUT =0.
PRNDTL(V1)=1. ;PRNDTL(W1)=1.
PRT(V1)=1. ;PRT(W1)=1.
CP1 =1. ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=1.3E-04 ;FIINIT(V1)=0.013
FIINIT(W1)=13. ;FIINIT(PRPS)=-1.
FIINIT(STRS)=1.0E-10 ;FIINIT(VABS)=1.0E-10
FIINIT(YPLS)=1.0E-10 ;FIINIT(SKIN)=1.0E-10
FIINIT(ENUT)=1.0E-10
PATCH(STEP ,INIVAL, 1, 1, 1, 25, 1, 15, 1, 1)
INIT(STEP ,PRPS,0. ,198. )
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(INLET ,LOW , 1, 1, 26, 60, 1, 1, 1, 1)
COVAL(INLET ,P1 , FIXFLU ,13. )
COVAL(INLET ,V1 ,0. ,0. )
COVAL(INLET ,W1 ,0. ,13. )
PATCH(OUTLET ,HIGH , 1, 1, 1, 60, 90, 90, 1, 1)
COVAL(OUTLET ,P1 ,1.0E+05 ,0. )
COVAL(OUTLET ,V1 ,0. ,0. )
COVAL(OUTLET ,W1 ,0. ,0. )
PATCH(WFNN ,NWALL , 1, 1, 60, 60, 1, 90, 1, 1)
COVAL(WFNN ,W1 ,1. ,0. )
PATCH(WFNS ,SWALL , 1, 1, 1, 1, 16, 90, 1, 1)
COVAL(WFNS ,W1 ,1. ,0. )
XCYCLE = F
EGWF = T
WALLCO = GRND2
SCALWF = T
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 1000 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-05
************************************************************
Group 16. Terminate Iterations
LITER(P1)=50 ;LITER(V1)=10
LITER(W1)=10
ENDIT(P1)=1.0E-03 ;ENDIT(V1)=1.0E-03
ENDIT(W1)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(V1,FALSDT,3.25641E-03)
RELAX(W1,FALSDT,3.25641E-03)
RELAX(PRPS,LINRLX,1.)
RELAX(STRS,LINRLX,1.)
RELAX(VABS,LINRLX,1.)
RELAX(YPLS,LINRLX,1.)
RELAX(SKIN,LINRLX,1.)
RELAX(ENUT,LINRLX,1.)
OVRRLX =0.
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
VARMAX(P1)=1.0E+10 ;VARMIN(P1)=-1.0E+10
VARMAX(V1)=1.0E+06 ;VARMIN(V1)=-1.0E+06
VARMAX(W1)=1.0E+06 ;VARMIN(W1)=-1.0E+06
VARMAX(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10
VARMAX(STRS)=1.0E+10 ;VARMIN(STRS)=-1.0E+10
VARMAX(VABS)=1.0E+10 ;VARMIN(VABS)=-1.0E+10
VARMAX(YPLS)=1.0E+10 ;VARMIN(YPLS)=-1.0E+10
VARMAX(SKIN)=1.0E+10 ;VARMIN(SKIN)=-1.0E+10
VARMAX(ENUT)=1.0E+10 ;VARMIN(ENUT)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
ISG62 = 1
SPEDAT(SET,OUTPUT,NOFIELD,L,T)
SPEDAT(SET,GXMONI,PLOTALL,L,T)
SPEDAT(SET,MATERIAL,198,L,T)
************************************************************
Group 20. Preliminary Printout
DISTIL = T ;NULLPR = F
NDST = 0
DSTTOL =1.0E-02
EX(P1)=0. ;EX(V1)=0.
EX(W1)=0. ;EX(PRPS)=0.
EX(STRS)=0. ;EX(VABS)=0.
EX(YPLS)=0. ;EX(SKIN)=0.
EX(ENUT)=0.
************************************************************
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,N,Y,Y,Y,Y)
OUTPUT(V1,Y,N,Y,Y,Y,Y)
OUTPUT(W1,Y,N,Y,Y,Y,Y)
OUTPUT(PRPS,Y,N,Y,N,N,N)
OUTPUT(STRS,Y,N,Y,N,N,N)
OUTPUT(VABS,Y,N,Y,N,N,N)
OUTPUT(YPLS,Y,N,Y,N,N,N)
OUTPUT(SKIN,Y,N,Y,N,N,N)
OUTPUT(ENUT,Y,N,Y,N,N,N)
************************************************************
Group 22. Monitor Print-Out
IXMON = 1 ;IYMON = 23 ;IZMON = 17
NPRMON = 100 ;NPRMNT = 1 ;TSTSWP = -1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NYPRIN = 2 ;IYPRF = 1 ;IYPRL = 10000
NZPRIN = 2 ;IZPRF = 1 ;IZPRL = 10000
XZPR = F ;YZPR = F
IPLTF = 1 ;IPLTL = 1000 ;NPLT = 10
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