TALK=T;RUN(1,1)
DISPLAY
The submarine part of a floating body sits in the domain of
integration, which extends from the water surface to the bottom.
The z coordinate is vertically downwards. The water flows in the
positive x-direction around, & under the body. In this first case
the flow is treated as incompressible, to contrast with the
following case in which compressibility is introduced throughout
the domain so as to simulate the surface waves. The model cases
are subsequently refined in various ways.
The results of the calculations resulting from the inputs
in this and subsequent cases in this section, together with
background information are in the paper entitled 'The Computation
of Flow around Ships with Allowance for Free-Surface and
Density-Gradient Effects' by D Brian Spalding in the
Proceedings of the First Intercontinental Symposium on
Maritime Simulation (June 1985).
ENDDIS
DISPLAY
Shallow water theory is invoked in this case to emulate the
surface waves. This theory recognizes the analogy with the
isentropic flow of an ideal gas with a ratio of principal
specific heats of 2. RHO1=COMPRESS activates the isentropic gas
law formula in GREX3.
ENDDIS
PHOTON USE
p
phi
view -0.4 1 1
norm
msg FLOW AROUND FLOATING BODY WITH RIGID SURFACE
msg
msg Pressure contours:
con p1 y 1 fi;.001
con p1 z 1 fi;.001
gr ou y 1;gr ou z 1
con p1 x 4 fi;.001
con p1 x 7 fi;.001
msg
msg Press to continue
pause
*cl
*msg Axial velocity contours:
*con u1 y 1 fi;.001
*con u1 z 1 fi;.001
*gr ou y 1;gr ou z 1
*con u1 x 4 fi;.001
*con u1 x 7 fi;.001
*msg
*msg Press to continue
*pause
cl
msg Velocity vectors:
vec y 1 sh;vec z 1 sh
gr ou y 1;gr ou z 1
msg
msg Press e to END
enduse
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************
TEXT(Free Surface Flow, 3D, Submerged )
************************************************************
************************************************************
IRUNN = 1 ;LIBREF = 454
************************************************************
Group 2. Time dependence
STEADY = T
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 15
XULAST =15.
XFRAC(1)=0.066667 ;XFRAC(2)=0.133333
XFRAC(3)=0.2 ;XFRAC(4)=0.266667
XFRAC(5)=0.333333 ;XFRAC(6)=0.4
XFRAC(7)=0.466667 ;XFRAC(8)=0.533333
XFRAC(9)=0.6 ;XFRAC(10)=0.666667
XFRAC(11)=0.733333 ;XFRAC(12)=0.8
XFRAC(13)=0.866667 ;XFRAC(14)=0.933333
XFRAC(15)=1.
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 10
YVLAST =5.
YFRAC(1)=0.1 ;YFRAC(2)=0.2
YFRAC(3)=0.3 ;YFRAC(4)=0.4
YFRAC(5)=0.5 ;YFRAC(6)=0.6
YFRAC(7)=0.7 ;YFRAC(8)=0.8
YFRAC(9)=0.9 ;YFRAC(10)=1.
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = F
NZ = 5
ZWLAST =2.5
ZFRAC(1)=0.2 ;ZFRAC(2)=0.4
ZFRAC(3)=0.6 ;ZFRAC(4)=0.8
ZFRAC(5)=1.
************************************************************
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(148)=PRPS ;NAME(150)=RHO1
* 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(U1,Y,Y,N,Y,N,Y)
SOLUTN(V1,Y,Y,N,Y,N,Y)
SOLUTN(W1,Y,Y,N,Y,N,Y)
SOLUTN(PRPS,Y,N,N,N,N,N)
SOLUTN(RHO1,Y,N,N,N,N,Y)
DEN1 = 150
PRPS = 148
************************************************************
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)
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 = GRND3 ;TMP1 =0. ;EL1 =0.
TSURR =0. ;TEMP0 =0. ;PRESS0 =0.24525
DVO1DT =0. ;DRH1DP = GRND3
RHO1A =2.019275 ;RHO1B =0.5 ;RHO1C =0.
EMISS =0. ;SCATT =0.
RADIA =0. ;RADIB =0.
ENUL =1.0E-05 ;ENUT =0.
PRNDTL(U1)=1. ;PRNDTL(V1)=1.
PRNDTL(W1)=1.
PRT(U1)=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)=0. ;FIINIT(U1)=1.
FIINIT(V1)=0. ;FIINIT(W1)=0.
FIINIT(PRPS)=-1. ;FIINIT(RHO1)=1.
PATCH(BODY ,INIVAL, 4, 7, 1, 2, 1, 3, 1, 1)
INIT(BODY ,PRPS,0. ,199. )
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(UPSTRM ,WEST , 1, 1, 1, 10, 1, 5, 1, 1)
COVAL(UPSTRM ,P1 , FIXFLU ,1. )
COVAL(UPSTRM ,U1 ,0. ,1. )
COVAL(UPSTRM ,V1 ,0. ,0. )
COVAL(UPSTRM ,W1 ,0. ,0. )
PATCH(DWNSTRM ,EAST , 15, 15, 1, 10, 1, 5, 1, 1)
COVAL(DWNSTRM ,P1 , FIXVAL ,0. )
COVAL(DWNSTRM ,U1 ,0. ,0. )
COVAL(DWNSTRM ,V1 ,0. ,0. )
COVAL(DWNSTRM ,W1 ,0. ,0. )
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 25 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-02
************************************************************
Group 16. Terminate Iterations
LITER(P1)=-20 ;LITER(U1)=10
LITER(V1)=10 ;LITER(W1)=10
ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
ENDIT(V1)=1.0E-03 ;ENDIT(W1)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(U1,FALSDT,1.)
RELAX(V1,FALSDT,1.)
RELAX(W1,FALSDT,1.)
RELAX(PRPS,LINRLX,1.)
RELAX(RHO1,LINRLX,0.25)
OVRRLX =0.
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
VARMAX(P1)=1.0E+10 ;VARMIN(P1)=-0.24425
VARMAX(U1)=1.0E+06 ;VARMIN(U1)=-1.0E+06
VARMAX(V1)=1.0E+06 ;VARMIN(V1)=-1.0E+06
VARMAX(W1)=2.0E-03 ;VARMIN(W1)=-1.0E+11
VARMAX(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10
VARMAX(RHO1)=2. ;VARMIN(RHO1)=0.5
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
ISG62 = 1
SPEDAT(SET,GXMONI,PLOTALL,L,T)
SPEDAT(SET,MATERIAL,199,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,N,Y,Y,Y,Y)
OUTPUT(U1,Y,N,Y,Y,Y,Y)
OUTPUT(V1,Y,N,Y,Y,Y,Y)
OUTPUT(W1,Y,N,N,N,N,N)
OUTPUT(PRPS,Y,N,Y,N,N,N)
OUTPUT(RHO1,Y,N,Y,N,N,N)
************************************************************
Group 22. Monitor Print-Out
IXMON = 5 ;IYMON = 5 ;IZMON = 1
NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NXPRIN = 1 ;IXPRF = 1 ;IXPRL = 15
NYPRIN = -1 ;IYPRF = 1 ;IYPRL = 10
NZPRIN = 1 ;IZPRF = 1 ;IZPRL = 1
XZPR = F ;YZPR = F
IPLTF = 1 ;IPLTL = 100 ;NPLT = 1
ISWPRF = 1 ;ISWPRL = 100000
ITABL = 3 ;IPROF = 1
ABSIZ =0.5 ;ORSIZ =0.4
NTZPRF = 1 ;NCOLPF = 50
ICHR = 2 ;NCOLCO = 45 ;NROWCO = 20
PATCH(CONT1 ,CONTUR, 1, 15, 1, 10, 1, 1, 1, 1)
PLOT(CONT1 ,P1 ,0. ,50. )
PATCH(PROF1 ,PROFIL, 5, 5, 1, 10, 1, 1, 1, 1)
PLOT(PROF1 ,P1 ,-0.5 ,1. )
PLOT(PROF1 ,U1 ,-0.5 ,1.5 )
PATCH(PROF2 ,PROFIL, 3, 3, 1, 10, 1, 1, 1, 1)
PLOT(PROF2 ,P1 ,-0.5 ,1. )
PLOT(PROF2 ,U1 ,-0.5 ,1.5 )
PATCH(PROF3 ,PROFIL, 8, 8, 1, 10, 1, 1, 1, 1)
PLOT(PROF3 ,P1 ,-0.5 ,1. )
PLOT(PROF3 ,U1 ,-0.5 ,1.5 )
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
STOP