TALK=T;RUN(1,1)
PHOTON USE
p
p10
up z
gr z 1
gr out x 1
gr out x 4
vec x 1 sh
vec x 3 sh
msg Velocity vectors at time step=10
msg Press RETURN to continue
pause
cont h1 x 1 fil;0.001
cont h1 x 3 fil;0.001
msg Temperature contours at time step=10
msg Press RETURN to continue
pause
p
p20
up z
gr z 1
gr out x 1
gr out x 4
vec x 1 sh
vec x 3 sh
msg Velocity vectors at time step=20
msg Press RETURN to continue
pause
cont h1 x 1 fil;0.001
cont h1 x 3 fil;0.001
msg Temperature contours at time step=20
msg Press RETURN to continue
pause
p
p30
up z
gr z 1
gr out x 1
gr out x 4
vec x 1 sh
vec x 3 sh
msg Velocity vectors at time step=30
msg Press RETURN to continue
pause
cont h1 x 1 fil;0.001
cont h1 x 3 fil;0.001
msg Temperature contours at time step=30
msg Press RETURN to continue
pause
p
p40
up z
gr z 1
gr out x 1
gr out x 4
vec x 1 sh
vec x 3 sh
msg Velocity vectors at time step=40
msg Press RETURN to continue
pause
cont h1 x 1 fil;0.001
cont h1 x 3 fil;0.001
msg Temperature contours at time step=40
msg Press RETURN to continue
pause
p
p50
up z
gr z 1
gr out x 1
gr out x 4
vec x 1 sh
vec x 3 sh
msg Velocity vectors at time step=50
msg Press RETURN to continue
pause
cont h1 x 1 fil;0.001
cont h1 x 3 fil;0.001
msg Temperature contours at time step=50
msg Press e to END
ENDUSE
DISPLAY
This example considers a two-stroke engine with loop scavenging.
It is an unsteady three-dimensional flow with mixing of hot and
cold streams and with time-varying domain boundaries.
The exhaust and intake processes take place through ports
in the lower part of the cylinder wall which are
progressively uncovered by the descending piston. The
exhaust port opens first and the cylinder pressure falls
due to both outflow and cylinder volume change. The inlet
cylinder pressure has fallen below the total pressure in the
inlet port. The incoming cold gas displaces and partially
mixes with the hot exhaust gas.
The inlet port flow direction makes an angle of 30 deg. to both
the radial and horizontal directions.
A single expanding grid is used in the z-direction so that
the cells representing the ports both expand and are uncovered.
The patches representing the port cells are active over a range
of time steps.
ENDDIS
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************
TEXT(Two Stroke Loop Scavenge Cycle 3D )
************************************************************
************************************************************
IRUNN = 1 ;LIBREF = 14
************************************************************
Group 2. Time dependence
STEADY = F
* Set overall time and no. of steps
TFIRST =-4.861111E-03 ;TLAST =2.083333E-03
FSTEP = 1 ;LSTEP = 50
Method of pairs used for grid setting.
TFRAC(2)=0.02
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = F
NX = 4
XULAST =3.14159
XFRAC(1)=0.3 ;XFRAC(2)=0.5
XFRAC(3)=0.7 ;XFRAC(4)=1.
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 4
YVLAST =0.05
YFRAC(1)=0.5 ;YFRAC(2)=0.8
YFRAC(3)=0.95 ;YFRAC(4)=1.
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = F
NZ = 10
ZWLAST =0.1111
ZFRAC(1)=0.149059 ;ZFRAC(3)=0.420984
ZFRAC(5)=0.654202 ;ZFRAC(7)=0.841893
ZFRAC(9)=0.970624
************************************************************
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 ;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,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)
SOLUTN(RHO1,Y,N,N,N,N,Y)
DEN1 = 150
************************************************************
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,Y,Y,Y,Y,Y,Y)
DIFCUT =0.5 ;ZDIFAC =1.
GALA = F ;ADDDIF = F
NEWRH1 = T
U1AD =0. ;V1AD =0. ;W1AD = ZMOVE
HUNIT =1.
ISOLX = -1 ;ISOLY = -1 ;ISOLZ = -1
************************************************************
Group 9. Properties used if PRPS is not
stored, and where PRPS = -1.0 if it is!
RHO1 = GRND5 ;TMP1 = GRND2 ;EL1 =0.
TSURR =0. ;TEMP0 =0. ;PRESS0 =0.
DVO1DT =0. ;DRH1DP = GRND5
RHO1A =0. ;RHO1B =3.49162E-03 ;RHO1C =0.
TMP1A =0. ;TMP1B =1.0E-03 ;TMP1C =0.
TMP2A =0. ;TMP2B =0. ;TMP2C =0.
EMISS =0. ;SCATT =0.
RADIA =0. ;RADIB =0.
ENUL =1.0E-05 ;ENUT =1.0E-03
PRNDTL(U1)=1. ;PRNDTL(V1)=1.
PRNDTL(W1)=1. ;PRNDTL(H1)=1.
PRT(U1)=1. ;PRT(V1)=1.
PRT(W1)=1. ;PRT(H1)=1.
CP1 =999.999939 ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=3.0E+05 ;FIINIT(U1)=1.0E-10
FIINIT(V1)=1.0E-10 ;FIINIT(W1)=1.0E-10
FIINIT(H1)=9.0E+05 ;FIINIT(RHO1)=1.0E-10
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(HEAD ,LWALL , 1, 4, 1, 4, 1, 1, 1, 50)
COVAL(HEAD ,U1 , GRND2 ,0. )
COVAL(HEAD ,V1 , GRND2 ,0. )
PATCH(CYL ,NWALL , 1, 4, 4, 4, 1, 10, 1, 50)
COVAL(CYL ,U1 , GRND2 ,0. )
COVAL(CYL ,W1 , GRND2 ,0. )
PATCH(PCR ,HWALL , 1, 4, 1, 4, 10, 10, 1, 50)
COVAL(PCR ,U1 , GRND2 ,0. )
COVAL(PCR ,V1 , GRND2 ,0. )
PATCH(EXH1 ,NORTH , 1, 1, 4, 4, 10, 10, 1, 70)
COVAL(EXH1 ,P1 ,1000. ,1.0E+05 )
COVAL(EXH1 ,U1 ,0. ,0. )
COVAL(EXH1 ,V1 ,0. ,0. )
COVAL(EXH1 ,W1 ,0. ,0. )
COVAL(EXH1 ,H1 ,0. , SAME )
PATCH(EXH2 ,NORTH , 1, 1, 4, 4, 9, 9, 3, 67)
COVAL(EXH2 ,P1 ,1000. ,1.0E+05 )
COVAL(EXH2 ,U1 ,0. ,0. )
COVAL(EXH2 ,V1 ,0. ,0. )
COVAL(EXH2 ,W1 ,0. ,0. )
COVAL(EXH2 ,H1 ,0. , SAME )
PATCH(EXH3 ,NORTH , 1, 1, 4, 4, 8, 8, 7, 63)
COVAL(EXH3 ,P1 ,1000. ,1.0E+05 )
COVAL(EXH3 ,U1 ,0. ,0. )
COVAL(EXH3 ,V1 ,0. ,0. )
COVAL(EXH3 ,W1 ,0. ,0. )
COVAL(EXH3 ,H1 ,0. , SAME )
PATCH(EXH4 ,NORTH , 1, 1, 4, 4, 7, 7, 14, 56)
COVAL(EXH4 ,P1 ,1000. ,1.0E+05 )
COVAL(EXH4 ,U1 ,0. ,0. )
COVAL(EXH4 ,V1 ,0. ,0. )
COVAL(EXH4 ,W1 ,0. ,0. )
COVAL(EXH4 ,H1 ,0. , SAME )
PATCH(TRA1 ,NORTH , 3, 3, 4, 4, 10, 10, 8, 62)
COVAL(TRA1 ,P1 ,-3.14 ,1.4E+05 )
COVAL(TRA1 ,U1 ,0. ,80. )
COVAL(TRA1 ,V1 ,0. ,-140. )
COVAL(TRA1 ,W1 ,0. ,-80. )
COVAL(TRA1 ,H1 ,0. ,3.0E+05 )
PATCH(TRA2 ,NORTH , 3, 3, 4, 4, 9, 9, 12, 58)
COVAL(TRA2 ,P1 ,-3.14 ,1.4E+05 )
COVAL(TRA2 ,U1 ,0. ,80. )
COVAL(TRA2 ,V1 ,0. ,-140. )
COVAL(TRA2 ,W1 ,0. ,-80. )
COVAL(TRA2 ,H1 ,0. ,3.0E+05 )
PATCH(TRA3 ,NORTH , 3, 3, 4, 4, 8, 8, 17, 53)
COVAL(TRA3 ,P1 ,-3.14 ,1.4E+05 )
COVAL(TRA3 ,U1 ,0. ,80. )
COVAL(TRA3 ,V1 ,0. ,-140. )
COVAL(TRA3 ,W1 ,0. ,-80. )
COVAL(TRA3 ,H1 ,0. ,3.0E+05 )
XCYCLE = F
EGWF = T
WALLCO = GRND2
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 10 ;ISWC1 = 1
LITHYD = 1 ;LITFLX = 1 ;LITC = 1 ;ITHC1 = 1
SELREF = T
RESFAC =1.0E-05
************************************************************
Group 16. Terminate Iterations
LITER(P1)=10 ;LITER(U1)=1
LITER(V1)=1 ;LITER(W1)=1
LITER(H1)=5
ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
ENDIT(V1)=1.0E-03 ;ENDIT(W1)=1.0E-03
ENDIT(H1)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(U1,FALSDT,5.0E-03)
RELAX(V1,FALSDT,5.0E-03)
RELAX(W1,FALSDT,5.0E-03)
RELAX(H1,FALSDT,1.0E+09)
RELAX(RHO1,LINRLX,1.)
OVRRLX =0.
EXPERT = F ;NNORSL = F
************************************************************
Group 18. Limits
VARMAX(P1)=1.0E+10 ;VARMIN(P1)=1.0E+04
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
VARMAX(RHO1)=1.0E+10 ;VARMIN(RHO1)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
PARSOL = F
IZW1 = 10
AZW1 =251.327209 ;BZW1 =0.05
CZW1 =4. ;DZW1 =0.
ISG62 = 1
SPEDAT(SET,GXMONI,TRANSIENT,L,F)
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,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,Y,Y,Y,Y)
OUTPUT(H1,Y,N,Y,Y,Y,Y)
OUTPUT(RHO1,Y,N,Y,N,N,N)
************************************************************
Group 22. Monitor Print-Out
IXMON = 2 ;IYMON = 3 ;IZMON = 8
NPRMON = 100 ;NPRMNT = 1 ;TSTSWP = -1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 10 ;NUMCLS = 5
NTPRIN = 5 ;ISTPRF = 1 ;ISTPRL = 100000
NXPRIN = -1 ;IXPRF = 1 ;IXPRL = 10000
NYPRIN = 0 ;IYPRF = 4 ;IYPRL = 4
NZPRIN = 2 ;IZPRF = 1 ;IZPRL = 10000
XZPR = T ;YZPR = F
IPLTF = 1 ;IPLTL = 10 ;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(RVEL ,PROFIL, 1, 4, 3, 3, 9, 9, 1, 50)
PLOT(RVEL ,U1 ,0. ,0. )
PATCH(YZ ,CONTUR, 1, 1, 1, 4, 1, 10, 1, 50)
PLOT(YZ ,H1 ,0. ,20. )
PATCH(TIMPLOT ,PROFIL, 1, 1, 3, 3, 9, 9, 1, 50)
PLOT(TIMPLOT ,P1 ,0. ,0. )
PLOT(TIMPLOT ,H1 ,0. ,0. )
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
IDISPA = 10 ;IDISPB = 0 ;IDISPC = 0
CSG1 ='P'
STOP