TALK=T;RUN(1,1)
DISPLAY
Library case H103:
PCB WITH 6 CHIPS
This case models flow over a PCB with six chips mounted
on it. There is a fan and aperture on oposing sides and
all chips generate heat. Results show bounadry layer
developing on the solid surfaces and hot plume moving
upwards. With finer grid this can be resolved in even
greater detail. Turbulence is modelled using the k-e model.
(Note that the LVEL turbulence model is recommended for
HOTBOX simulations, this case shows that the k-e model is
an option)
(Use PHOTON to display results. Enter USE Q1 in PHOTON
command mode, or create a file called U, which contains
the one line: USE Q1 before typing RUNPHO.)
ENDDIS
PHOTON USE
p
msg Flow around 6 chips on a PCB
msg
msg Geometry of the problem
use patgeo
msg
use HOTSPOT
msg
msg Press return to plot velocity vectors
pause
red
vec x 4 sh
msg Press return to magnify velocity profile near the
msg solid surfaces; note boundary layer formation
pause
mag gr 3
0.17687E+04 0.19476E+04 CR
msg Press return to change view
pause
view x
msg Press return to plot Temperature contours
pause
vec cl
mag gr 0
view 1 1 1
msg Note upwards plume formation and development
cont tem1 z 4 fil;.001
msg
msg Press return to plot surfaces of 45 deg.
pause
cl
gr ou x 1; gr ou x m
gr ou z 1; gr ou z m
surf tem1 x col 12;45.
surf tem1 y col 12;45.
surf tem1 z col 12;45.
vie 1 1 1.5
msg Type E to end
ENDUSE
************************************************************
Group 1. Run Title and Number
************************************************************
************************************************************
TEXT(PCB With 6 Chips )
************************************************************
************************************************************
IRUNN = 1 ;LIBREF = 14
************************************************************
Group 2. Time dependence
STEADY = T
************************************************************
Group 3. X-Direction Grid Spacing
CARTES = T
NX = 14
XULAST =0.11
XFRAC(1)=0.090909 ;XFRAC(3)=0.227273
XFRAC(5)=0.363636 ;XFRAC(7)=0.5
XFRAC(9)=0.636364 ;XFRAC(11)=0.818182
XFRAC(13)=0.939394
************************************************************
Group 4. Y-Direction Grid Spacing
NY = 10
YVLAST =0.13
YFRAC(1)=0.115385 ;YFRAC(2)=0.230769
YFRAC(3)=0.307692 ;YFRAC(4)=0.384615
YFRAC(5)=0.5 ;YFRAC(6)=0.615385
YFRAC(7)=0.692308 ;YFRAC(8)=0.769231
YFRAC(9)=0.884615 ;YFRAC(10)=1.
************************************************************
Group 5. Z-Direction Grid Spacing
PARAB = F
NZ = 22
ZWLAST =0.064
ZFRAC(1)=0.052083 ;ZFRAC(5)=0.1875
ZFRAC(9)=0.256786 ;ZFRAC(13)=0.416392
ZFRAC(17)=0.644009 ;ZFRAC(21)=0.923192
************************************************************
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(12)=KE ;NAME(13)=EP
NAME(46)=BLOK ;NAME(47)=PRPS
NAME(48)=EPKE ;NAME(49)=DEN1
NAME(50)=TEM1
* 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(KE,Y,Y,N,N,N,N)
SOLUTN(EP,Y,Y,N,N,N,N)
SOLUTN(BLOK,Y,N,N,N,N,Y)
SOLUTN(PRPS,Y,N,N,N,N,Y)
SOLUTN(EPKE,Y,N,N,N,N,Y)
SOLUTN(DEN1,Y,N,N,N,N,Y)
SOLUTN(TEM1,Y,Y,Y,N,N,Y)
DEN1 = 49
IVARBK = -1 ;ISOLBK = 1
PRNITS= F ;OPTRLX= F ;NOSIP= F ;ALLVBC= F
DBSOLV= F ;IMPINI= F ;EARL1D= F
PRPS = 47
************************************************************
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(KE,N,Y,Y,Y,Y,N)
TERMS(EP,N,Y,Y,Y,Y,N)
TERMS(TEM1,N,Y,Y,Y,Y,Y)
DIFCUT =0.5 ;ZDIFAC =1.
GALA = F ;ADDDIF = F
NEWENT = T
ISOLX = 0 ;ISOLY = 0 ;ISOLZ = 0
************************************************************
Group 9. Properties used if PRPS is not
stored, and where PRPS = -1.0 if it is!
RHO1 = FILE ;TMP1 =0. ;EL1 = GRND4
TSURR =0. ;TEMP0 =273. ;PRESS0 =1.0E+05
DVO1DT =1.189 ;DRH1DP =0.
EMISS =0. ;SCATT =0.
RADIA =0. ;RADIB =0.
EL1A =0. ;EL1B =0. ;EL1C =0.
ENUL = FILE ;ENUT = GRND3
ENUTA =0. ;ENUTB =0. ;ENUTC =0.
IENUTA = 0
PRNDTL(U1)=1. ;PRNDTL(V1)=1.
PRNDTL(W1)=1. ;PRNDTL(KE)=1.
PRNDTL(EP)=1. ;PRNDTL(TEM1)=CONDFILE
PRT(U1)=1. ;PRT(V1)=1.
PRT(W1)=1. ;PRT(KE)=1.
PRT(EP)=1.314 ;PRT(TEM1)=1.
CP1 = FILE ;CP2 =1.
************************************************************
Group 10.Inter-Phase Transfer Processes
************************************************************
Group 11.Initial field variables (PHIs)
FIINIT(P1)=1.0E-10 ;FIINIT(U1)=1.0E-10
FIINIT(V1)=1.0E-10 ;FIINIT(W1)=1.0E-10
FIINIT(KE)=2.5E-05 ;FIINIT(EP)=3.796E-06
FIINIT(BLOK)=1. ;FIINIT(PRPS)=2.
FIINIT(EPKE)=1. ;FIINIT(DEN1)=1.0E-10
FIINIT(TEM1)=20.
PATCH(PCB ,INIVAL, 1, 14, 1, 10, 1, 3, 1, 1)
INIT(PCB ,BLOK,0. ,2. )
INIT(PCB ,PRPS,0. ,105. )
PATCH(CHP1 ,INIVAL, 3, 4, 3, 4, 4, 7, 1, 1)
INIT(CHP1 ,BLOK,0. ,3. )
INIT(CHP1 ,PRPS,0. ,108. )
PATCH(CP1L ,INIVAL, 3, 4, 3, 4, 6, 7, 1, 1)
INIT(CP1L ,BLOK,0. ,4. )
INIT(CP1L ,PRPS,0. ,107. )
PATCH(CHP2 ,INIVAL, 7, 8, 3, 4, 4, 7, 1, 1)
INIT(CHP2 ,BLOK,0. ,5. )
INIT(CHP2 ,PRPS,0. ,108. )
PATCH(CHP3 ,INIVAL, 11, 11, 3, 4, 4, 7, 1, 1)
INIT(CHP3 ,BLOK,0. ,6. )
INIT(CHP3 ,PRPS,0. ,108. )
PATCH(CHP4 ,INIVAL, 3, 4, 7, 8, 4, 7, 1, 1)
INIT(CHP4 ,BLOK,0. ,7. )
INIT(CHP4 ,PRPS,0. ,108. )
PATCH(CHP5 ,INIVAL, 7, 8, 7, 8, 4, 7, 1, 1)
INIT(CHP5 ,BLOK,0. ,8. )
INIT(CHP5 ,PRPS,0. ,108. )
PATCH(CHP6 ,INIVAL, 11, 11, 7, 8, 4, 7, 1, 1)
INIT(CHP6 ,BLOK,0. ,9. )
INIT(CHP6 ,PRPS,0. ,108. )
PATCH(CP2L ,INIVAL, 7, 8, 3, 4, 6, 7, 1, 1)
INIT(CP2L ,BLOK,0. ,10. )
INIT(CP2L ,PRPS,0. ,107. )
PATCH(CP3L ,INIVAL, 11, 11, 3, 4, 6, 7, 1, 1)
INIT(CP3L ,BLOK,0. ,11. )
INIT(CP3L ,PRPS,0. ,107. )
PATCH(CP4L ,INIVAL, 3, 4, 7, 8, 6, 7, 1, 1)
INIT(CP4L ,BLOK,0. ,12. )
INIT(CP4L ,PRPS,0. ,107. )
PATCH(CP5L ,INIVAL, 7, 8, 7, 8, 6, 7, 1, 1)
INIT(CP5L ,BLOK,0. ,13. )
INIT(CP5L ,PRPS,0. ,107. )
PATCH(CP6L ,INIVAL, 11, 11, 7, 8, 6, 7, 1, 1)
INIT(CP6L ,BLOK,0. ,14. )
INIT(CP6L ,PRPS,0. ,107. )
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(KESOURCE,PHASEM, 0, 0, 0, 0, 0, 0, 1, 1)
COVAL(KESOURCE,KE , GRND4 , GRND4 )
COVAL(KESOURCE,EP , GRND4 , GRND4 )
PATCH(FAN ,SOUTH , 1, 14, 1, 1, 4, 22, 1, 1)
COVAL(FAN ,P1 , FIXFLU ,0.1189 )
COVAL(FAN ,U1 ,0. ,0. )
COVAL(FAN ,V1 ,0. ,0.1 )
COVAL(FAN ,W1 ,0. ,0. )
COVAL(FAN ,KE ,0. ,2.5E-05 )
COVAL(FAN ,EP ,0. ,3.796E-06 )
COVAL(FAN ,TEM1,0. ,19. )
PATCH(EXIT ,NORTH , 1, 14, 10, 10, 4, 22, 1, 1)
COVAL(EXIT ,P1 ,1. ,0. )
COVAL(EXIT ,KE ,0. , SAME )
COVAL(EXIT ,EP ,0. , SAME )
COVAL(EXIT ,TEM1,0. ,20. )
PATCH(HOTCHP1 ,VOLUME, 3, 4, 3, 4, 4, 7, 1, 1)
COVAL(HOTCHP1 ,TEM1, FIXFLU ,6.25E+05 )
PATCH(HOTCHP2 ,VOLUME, 7, 8, 3, 4, 4, 7, 1, 1)
COVAL(HOTCHP2 ,TEM1, FIXFLU ,6.25E+05 )
PATCH(HOTCHP3 ,VOLUME, 11, 11, 3, 4, 4, 7, 1, 1)
COVAL(HOTCHP3 ,TEM1, FIXFLU ,6.25E+05 )
PATCH(HOTCHP4 ,VOLUME, 3, 4, 7, 8, 4, 7, 1, 1)
COVAL(HOTCHP4 ,TEM1, FIXFLU ,6.25E+05 )
PATCH(HOTCHP5 ,VOLUME, 7, 8, 7, 8, 4, 7, 1, 1)
COVAL(HOTCHP5 ,TEM1, FIXFLU ,6.25E+05 )
PATCH(HOTCHP6 ,VOLUME, 11, 11, 7, 8, 4, 7, 1, 1)
COVAL(HOTCHP6 ,TEM1, FIXFLU ,6.25E+05 )
PATCH(BUOYANCY,PHASEM, 1, 14, 1, 10, 1, 22, 1, 1)
COVAL(BUOYANCY,V1 , FIXFLU , GRND2 )
XCYCLE = F
EGWF = T
WALLCO = GRND2
BUOYA =0. ; BUOYB =-9.81 ; BUOYC =0.
BUOYD =1.189
************************************************************
Group 14. Downstream Pressure For PARAB
************************************************************
Group 15. Terminate Sweeps
LSWEEP = 30 ;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
LITER(KE)=20 ;LITER(EP)=20
LITER(TEM1)=15
ENDIT(P1)=1.0E-03 ;ENDIT(U1)=1.0E-03
ENDIT(V1)=1.0E-03 ;ENDIT(W1)=1.0E-03
ENDIT(KE)=1.0E-03 ;ENDIT(EP)=1.0E-03
ENDIT(TEM1)=1.0E-03
************************************************************
Group 17. Relaxation
RELAX(P1,LINRLX,1.)
RELAX(U1,FALSDT,0.13)
RELAX(V1,FALSDT,0.13)
RELAX(W1,FALSDT,0.13)
RELAX(KE,LINRLX,0.4)
RELAX(EP,LINRLX,0.4)
RELAX(BLOK,LINRLX,1.)
RELAX(PRPS,LINRLX,1.)
RELAX(EPKE,LINRLX,1.)
RELAX(DEN1,LINRLX,1.)
RELAX(TEM1,FALSDT,1300.)
KELIN = 1
OVRRLX =0.
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(KE)=1.0E+10 ;VARMIN(KE)=1.0E-10
VARMAX(EP)=1.0E+10 ;VARMIN(EP)=1.0E-10
VARMAX(BLOK)=1.0E+10 ;VARMIN(BLOK)=-1.0E+10
VARMAX(PRPS)=1.0E+10 ;VARMIN(PRPS)=-1.0E+10
VARMAX(EPKE)=1.0E+10 ;VARMIN(EPKE)=-1.0E+10
VARMAX(DEN1)=1.0E+10 ;VARMIN(DEN1)=-1.0E+10
VARMAX(TEM1)=1.0E+10 ;VARMIN(TEM1)=-1.0E+10
************************************************************
Group 19. Data transmitted to GROUND
NAMGRD =HTBX
GENK = T
PARSOL = F
ISG62 = 1
SPEDAT(SET,GXMONI,PLOTALL,L,T)
SPEDAT(SET,MATERIAL,2,L,T)
SPEDAT(SET,MATERIAL,105,L,T)
SPEDAT(SET,MATERIAL,108,L,T)
SPEDAT(SET,MATERIAL,107,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(KE,Y,N,Y,Y,Y,Y)
OUTPUT(EP,Y,N,Y,Y,Y,Y)
OUTPUT(BLOK,N,N,N,N,N,N)
OUTPUT(PRPS,N,N,N,N,N,N)
OUTPUT(EPKE,Y,N,Y,N,N,N)
OUTPUT(DEN1,Y,N,Y,N,N,N)
OUTPUT(TEM1,Y,N,Y,Y,Y,Y)
************************************************************
Group 22. Monitor Print-Out
IXMON = 5 ;IYMON = 5 ;IZMON = 5
NPRMON = 100000 ;NPRMNT = 1 ;TSTSWP = -1
UWATCH = T ;USTEER = T
HIGHLO = F
************************************************************
Group 23.Field Print-Out & Plot Control
NPRINT = 100000 ;NUMCLS = 5
NXPRIN = 2 ;IXPRF = 1 ;IXPRL = 10000
NYPRIN = 1 ;IYPRF = 1 ;IYPRL = 10000
NZPRIN = 4 ;IZPRF = 1 ;IZPRL = 10000
XZPR = F ;YZPR = F
IPLTF = 1 ;IPLTL = -1 ;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
No PATCHes yet used for this Group
************************************************************
Group 24. Dumps For Restarts
SAVE = T ;NOWIPE = F
NSAVE =CHAM
STOP