[转帖]CFX火灾模拟使用说明

frogfish · 发表于 2005-8-26 09:42

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CFX計算流力軟體使用說明
CFX程式有具體結構化，所有執行動作都由數段命令式的指令所構成，並且需要配合正確的幾何圖檔，與普通FORTRAN或是C等不同，是屬於高階語言，接近人類的口語。
以下將程式分成數段分別加以說明。此說明的方法是根據程式所區分的結構，逐項參考說明內容。說明的對象是計算公館捷運站內發生火源強度10MW的火災時的三維計算模型。
（一) 主程式部分
一>>CFX4
>>SET LIMITS

TOTAL REAL WORK SPACE 20000000

TOTAL INTEGER WORK SPACE 4000000

(這段程式的目的在於定義硬體所分配的工作，告知電腦所要工作的模型需要多少空間，所以定義的數字只能多不能少。若定義太少，則CFX4無法運作，會有訊息告知你工作空間定義不足。)

>>OPTIONS

THREE DIMENSIONS

CARTESIAN COORDINATES

TURBULENT FLOW

HEAT TRANSFER

COMPRESSIBLE FLOW

BUOYANT FLOW

TRANSIENT FLOW

MASS FRACTION EQUATIONS 1

USE DATABASE

(目的在於定義流場需要哪些物理現象，由本例中可知有紊流、熱傳、可壓縮流、浮力、質傳等等現象。且知是以三維的方式運算。最後一行告知所使用到的物理參數對照CFX4內所設定好的值)

>>USER FORTRAN

USRSRC

(在這裡必須利用USER FORTRAN 叫出一個名為USRSRC的副程式以便把流場中的熱傳源以及質傳源加入計算，故必須在此部份加以宣告)

二>>MODEL DATA

>>MATERIALS DATABASE

>>SOURCE OF DATA

PCP

(宣告所需的物理參數參照CFX4軟體內的PCP方式)

>>FLUID DATA

FLUID 'AIR'

MATERIAL TEMPERATURE 298.0

MATERIAL PHASE 'GAS'

(宣告流場中的流體為空氣，且一些有關空氣的物理參數對照CFX4內所預設的298K時的值，空氣的相為氣體。)

>>PHYSICAL PROPERTIES

>>BUOYANCY PARAMETERS

GRAVITY VECTOR 0.000000E+00 0.000000e+00 -9.800000e+00

BUOYANCY REFERENCE DENSITY 1.2000E+00

(定義流場中的重力值為9.8，而浮力作用的參考密度為1.2)

>>MASS TRANSFER PARAMETERS

>>DIFFUSIVITIES

MASS FRACTION1 1.6400E-05

(宣告質傳主角的擴散係數為0.0000164)

>>MOLECULAR WEIGHTS

MASS FRACTION1 4.4000E+01

(宣告質傳主角的分子量為44)

>>SPECIFIC HEATS

MASS FRACTION1 1.120000E+03

(宣告質傳主角的比熱為1120)

>>TURBULENCE PARAMETERS

>>TURBULENCE MODEL

TURBULENCE MODEL 'K-EPSILON'

END

(宣告紊流模式的計算為模式)

>>TRANSIENT PARAMETERS

>>FIXED TIME STEPPING

TIME STEPS 5*10

INITIAL TIME 0.0

(宣告transient的計算是以fixed time stepping的方式，一共計算5個時間步，每個時間步為10秒，起始時間為0。)

三>>SOLVER DATA

>>PROGRAM CONTROL

MAXIMUM NUMBER OF ITERATIONS 20

OUTPUT MONITOR POINT 1 1 1

MASS SOURCE TOLERANCE 1.0000E-4

(宣告解方程式時最大的疊代數為20，而收斂的條件是MASS SOURCE TOLERANCE小於或者等於1.0000E-4，這個單位為單位時間內所有格點質量的差異。最後宣告模型的(I,J,K)=(1,1,1)的位置格點之值作為計算暫存檔，以作為參考的位置。)

>>EQUATION SOLVERS

PRESSURE 'STONE'

ENTHALPY 'STONE'

(宣告PRESSURE以及ENTHALPY兩個參數以'STONE'的方式求解)

>>UNDER RELAXATION FACTORS

ENTHALPY 1.0000E+00

MASS FRACTION1 1.0000E+00

(宣告鬆弛參數(RELAXATION FACTORS)對MASS FRACTION1以及ENTHALPY為1.0，而其他沒有宣告的變數則為預設值)
四>>MODEL BOUNDARY CONDITIONS

>>INLET BOUNDARIES

PATCH NAME 'INLET1'

U VELOCITY 10.0

TEMPERATURE 2.9800E+02

(宣告名稱為'INLET1'的邊界，其速度為10(m/s)，溫度為298K。)

五>>OUTPUT OPTIONS

>>DUMP FILE OPTIONS

EACH TIME STEP

ALL VARIABLES

END

(宣告DUMP FILE內所解的的結果中，所有變數在每個時間步皆要表現出來。)

>>PRINT OPTIONS

>>WHAT

U

V

W

END

(宣告在輸出文字檔中，將三個速度向量U、V、W以矩陣的格式表現)

>>WHEN

EACH TIME STEP

FINAL SOLUTION

END

(宣告在輸出文字檔中，分別在每個時間步以及最後的結果中，將三個速度向量U、V、W以矩陣的格式表現)

>>WHERE

BLOCK NAME 'SOLID 10'

K PLANES 23

BLOCK NAME 'SOLID 16'

K PLANES 21

BLOCK NAME 'SOLID 36'

K PLANES 30

BLOCK NAME 'SOLID 40'

K PLANES 20

END

(宣告在輸出文字檔中，將區塊10的k=23、區塊16的k=21、區塊36的k=30、區塊40的k=20處的三個速度向量U、V、W以矩陣的格式表現)

>>STOP

(宣告程式結束)

===============================================================

来自：清洁能源网

frogfish · 发表于 2005-8-26 09:43

(二)副程式部分 本算例中的火源可為一定質量以及定能量的傳輸，再以設定的結構中並不包含此類設定，故需自行編寫程式附於上述的主程式中。 編寫此程式所用的語言為FORTRAN，所有的變數說明以及指令編排皆註解於此程式中，讀者逐一研讀每一行指令即能了解。以下為副程式的部分，前面加有C字者為注釋，真正程式執行時並不會用到。使用者可以修改的部分，前面標以阿拉伯數字，並逐一解釋： SUBROUTINE USRSRC(IEQN,ICALL,CNAME,CALIAS,AM,SP,SU,CONV + ,U,V,W,P,VFRAC,DEN,VIS,TE,ED,RS,T,H,RF,SCAL + ,XP,YP,ZP,VOL,AREA,VPOR,ARPOR,WFACT,IPT + ,IBLK,IPVERT,IPNODN,IPFACN,IPNODF,IPNODB,IPFACB + ,WORK,IWORK,CWORK) C C********************************************************************** C C UTILITY SUBROUTINE FOR USER-SUPPLIED SOURCES C C >>> IMPORTANT <<< C >>> <<< C >>> USERS MAY ONLY ADD OR ALTER PARTS OF THE SUBROUTINE CWITHIN <<< C >>> THE DESIGNATED USER AREAS C<<< C C********************************************************************** C C THIS SUBROUTINE IS CALLED BY THE FOLLOWING SUBROUTINES C CUSR SCDF SCDS SCED SCENRG SCHF SCMOM SCPCE CSCSCAL C SCTE SCVF C C********************************************************************** C CREATED C 08/03/90 ADB C MODIFIED C 04/03/91 ADB ALTERED ARGUMENT LIST. C 28/08/91 IRH NEW STRUCTURE C 28/09/91 IRH CHANGE EXAMPLE + ADD COMMON BLOCKS C 10/02/92 PHA UPDATE CALLED BY COMMENT, ADD RF ARGUMENT, C CHANGE LAST DIMENSION OF RS TO 6 AND IVERS TO 2 C 03/06/92 PHA ADD PRECISION FLAG AND CHANGE IVERS TO 3 C 23/11/93 CSH EXPLICITLY DIMENSION IPVERT ETC. C 07/12/93 NSW INCLUDE CONV IN ARGUMENT LIST AND CHANGE IVERS C TO 4 C 03/02/94 PHA CHANGE FLOW3D TO CFDS-FLOW3D C 03/03/94 FHW CORRECTION OF SPELLING MISTAKE C 08/03/94 NSW CORRECT SPELLING C 09/08/94 NSW CORRECT SPELLING. C MOVE 'IF(IUSED.EQ.0) RETURN' OUT OF USER AREA. C INCLUDE COMMENT ON MASS SOURCES. C 19/12/94 NSW CHANGE FOR CFX-F3D C 02/07/97 NSW UPDATE FOR CFX-4 C C********************************************************************** C C SUBROUTINE ARGUMENTS C C IEQN - EQUATION NUMBER C ICALL - SUBROUTINE CALL C CNAME - EQUATION NAME C CALIAS - ALIAS OF EQUATION NAME C AM - OFF DIAGONAL MATRIX COEFFICIENTS C SU - SU IN LINEARISATION OF SOURCE TERM C SP - SP IN LINEARISATION OF SOURCE TERM C CONV - CONVECTION COEFFICIENTS C U - U COMPONENT OF VELOCITY C V - V COMPONENT OF VELOCITY C W - W COMPONENT OF VELOCITY C P - PRESSURE C VFRAC - VOLUME FRACTION C DEN - DENSITY OF FLUID C VIS - VISCOSITY OF FLUID C TE - TURBULENT KINETIC ENERGY C ED - EPSILON C RS - REYNOLD STRESSES C T - TEMPERATURE C H - ENTHALPY C RF - REYNOLD FLUXES C SCAL - SCALARS (THE FIRST 'NCONC' OF THESE ARE MASS FRACTIONS) C XP - X COORDINATES OF CELL CENTRES C YP - Y COORDINATES OF CELL CENTRES C ZP - Z COORDINATES OF CELL CENTRES C VOL - VOLUME OF CELLS C AREA - AREA OF CELLS C VPOR - POROUS VOLUME C ARPOR - POROUS AREA C WFACT - WEIGHT FACTORS C C IPT - 1D POINTER ARRAY C IBLK - BLOCK SIZE INformATION C IPVERT - POINTER FROM CELL CENTERS TO 8 NEIGHBOURING VERTICES C IPNODN - POINTER FROM CELL CENTERS TO 6 NEIGHBOURING CELLS C IPFACN - POINTER FROM CELL CENTERS TO 6 NEIGHBOURING FACES C IPNODF - POINTER FROM CELL FACES TO 2 NEIGHBOURING CELL CENTERS C IPNODB - POINTER FROM BOUNDARY CENTERS TO CELL CENTERS C IPFACB - POINTER FROM BOUNDARY CENTERS TO BOUNDARY FACESS C C WORK - REAL WORKSPACE ARRAY C IWORK - INTEGER WORKSPACE ARRAY C CWORK - CHARACTER WORKSPACE ARRAY C C SUBROUTINE ARGUMENTS PRECEDED WITH A '*' ARE ARGUMENTS THAT MUST C BE SET BY THE USER IN THIS ROUTINE. C C NOTE THAT WHEN USING MASS SOURCES, THE FLOWS THROUGH MASS FLOW C BOUNDARIES ARE UNCHANGED. THE USER SHOULD THEREFORE INCLUDE AT C LEAST ONE PRESSURE BOUNDARY FOR SUCH A CALCULATION. C C NOTE THAT OTHER DATA MAY BE OBTAINED FROM CFX-4 USING THE C ROUTINE GETADD, FOR FURTHER DETAILS SEE THE VERSION 4 C USER MANUAL. C C********************************************************************** C LOGICAL LDEN,LVIS,LTURB,LTEMP,LBUOY,LSCAL,LCOMP + ,LRECT,LCYN,LAXIS,LPOROS,LTRANS C CHARACTER*(*) CWORK CHARACTER CNAME*6, CALIAS*24 C C+++++++++++++++++ USER AREA +++++++++++++++++++++++++++++ C---- AREA FOR USERS EXPLICITLY DECLARED VARIABLES C C+++++++++++++++++ END OF USER AREA 1 +++++++++++++++++++ C COMMON + /ALL/ NBLOCK,NCELL,NBDRY,NNODE,NFACE,NVERT,NDIM + /ALLWRK/ NRWS,NIWS,NCWS,IWRFRE,IWIFRE,IWCFRE + /ADDIMS/ NPHASE,NSCAL,NVAR,NPROP + ,NDVAR,NDPROP,NDXNN,NDGEOM,NDCOEF,NILIST,NRLIST,NTOPOL + /CHKUSR/ IVERS,IUCALL,IUSED + /DEVICE/ NREAD,NWRITE,NRDISK,NWDISK + /IDUM/ ILEN,JLEN + /LOGIC/ LDEN,LVIS,LTURB,LTEMP,LBUOY,LSCAL,LCOMP + ,LRECT,LCYN,LAXIS,LPOROS,LTRANS + /MLTGRD/ MLEVEL,NLEVEL,ILEVEL + /SGLDBL/ IFLGPR,ICHKPR + /SPARM/ SMALL,SORMAX,NITER,INDPRI,MAXIT,NODREF,NODMON + /TRANSI/ NSTEP,KSTEP,MF,INCORE + /TRANSR/ TIME,DT,DTINVF,TPARM C C+++++++++++++++++ USER AREA 2 +++++++++++++++++++++++++++++++++ C---- AREA FOR USERS TO DECLARE THEIR OWN COMMON BLOCKS C THESE SHOULD START WITH THE CHARACTERS 'UC' TO ENSURE C NO CONFLICT WITH NON-USER COMMON BLOCKS C C+++++++++++++++++ END OF USER AREA 2 +++++++++++++++++++++++++ C DIMENSION AM(NCELL,6,NPHASE),SP(NCELL,NPHASE),SU(NCELL,NPHASE) +,CONV(NFACE,NPHASE) C DIMENSION +U(NNODE,NPHASE),V(NNODE,NPHASE),W(NNODE,NPHASE),P(NNODE,NPHASE) +,VFRAC(NNODE,NPHASE),DEN(NNODE,NPHASE),VIS(NNODE,NPHASE) +,TE(NNODE,NPHASE),ED(NNODE,NPHASE),RS(NNODE,NPHASE,6) +,T(NNODE,NPHASE),H(NNODE,NPHASE),RF(NNODE,NPHASE,4) +,SCAL(NNODE,NPHASE,NSCAL) C DIMENSION + XP(NNODE),YP(NNODE),ZP(NNODE) +,VOL(NCELL),AREA(NFACE,3),VPOR(NCELL),ARPOR(NFACE,3) +,WFACT(NFACE) +,IPT(*),IBLK(5,NBLOCK) +,IPVERT(NCELL,8),IPNODN(NCELL,6),IPFACN(NCELL,6),IPNODF(NFACE,4) +,IPNODB(NBDRY,4),IPFACB(NBDRY) +,IWORK(*),WORK(*),CWORK(*) C C+++++++++++++++++ USER AREA 3 ++++++++++++++++++++++++++ C---- AREA FOR USERS TO DIMENSION THEIR ARRAYS C C---- AREA FOR USERS TO DEFINE DATA STATEMENTS C C+++++++++++++++++ END OF USER AREA 3 ++++++++++++++++++++ C C---- STATEMENT FUNCTION FOR ADDRESSING IP(I,J,K)=IPT((K-1)*ILEN*JLEN+(J-1)*ILEN+I) C C----VERSION NUMBER OF USER ROUTINE AND PRECISION FLAG C IVERS=4 ICHKPR = 1 C C+++++++++++++++++ USER AREA 4 +++++++++++++++++++++++++++++ C---- TO USE THIS USER ROUTINE FIRST SET IUSED=1 C IUSED=1 C C+++++++++++++++++ END OF USER AREA 4 ++++++++++++++++++++++ C IF (IUSED.EQ.0) RETURN C C---- FRONTEND CHECKING OF USER ROUTINE IF (IUCALL.EQ.0) RETURN C C---- ADD TO SOURCE TERMS IF (ICALL.EQ.1) THEN 1 CALL GETVAR('USRSRC','H ',IVAR) 2 CALL GETVAR('USRSRC','SCAL ',IAAAA) 3 CALL GETSCA('MASS FRACTION1',IBBBB,CWORK) 4 IF (IEQn.EQ.IVAr) THEN 5 CALL IPREC('SOLID 43','BLOCK','CENTRES',IPT,ILEN,JLEN, + KLEN,CWORK,IWORK) 6 RHEAT = 232323*2.5 C LOOP OVER PATCH 7 DO 103 K = 4,5 8 DO 102 J = 3,5 9 DO 101 I = 300,310 C USE STATEMENT FUNCTION IP TO GET ADDRESSES 10 INODE = IP(I,J,K) C PUT IN A FIXED FUEL-BURNING RATE 11 SU(INODE,1)=SU(INODE,1)+RHEAT*VOL(INODE) 12 101 CONTINUE 13 102 CONTINUE 14 103 CONTINUE 15 ENDIF 16 IF (IEQn.EQ.(IAAAA+IBBBB-1)) THEN 17 CALL IPREC('SOLID 43','BLOCK','CENTRES',IPT,ILEN,JLEN, 18 + KLEN,CWORK,IWORK) 19 DO 106 K = 4,5 20 DO 105 J = 3,5 21 DO 104 I = 300,310 22 INODE = IP(I,J,K) 23 SU(INODE,1)=SU(INODE,1)+0.09*VOL(INODE) 24 104 CONTINUE 25 105 CONTINUE 26 106 CONTINUE 27 ENDIF C C+++++++++++++++++ END OF USER AREA 5 ++++++++++++++++++++++++ ENDif C C---- OVERWRITE SOURCE TERMS IF (ICALL.EQ.2) THEN ENDIF RETURN END

frogfish · 发表于 2005-8-26 09:43

C C+++++++++++++++++ USER AREA 6 +++++++++++++++++++++++++++++ C C EXAMPLE (HEAT SOURCE) OVERWRITE WITH 100W PER UNIT VOLUME IN C ALL INTERIOR CELLS C C CALL GETVAR('USRSRC','H ',IVAR) C C IF (IVAR.EQ.IEQN) THEN C USE IPALL TO FIND 1D ADDRESSES OF ALL CELL CENTRES C CALL IPALL('*','*','BLOCK','CENTRES',IPT,NPT,CWORK,IWORK) C LOOP OVER ALL INTERIOR CELLS C DO 200 I=1,NPT C USE ARRAY IPT TO GET ADDRESS C INODE=IPT(I) C OVERWRITE SOURCE TERMS C SU(INODE,1)=100.0*VOL(INODE) C 200 CONTINUE C ENDIF C C---- END OF EXAMPLE C+++++++++++++++++ END OF USER AREA 6 ++++++++++++++++++++++++++ C C ENDIF C RETURN C END C SUBROUTINE USRTRN(U,V,W,P,VFRAC,DEN,VIS,TE,ED,RS,T,H,RF,SCAL, C + XP,YP,ZP,VOL,AREA,VPOR,ARPOR,WFACT,CONV,IPT, C + IBLK,IPVERT,IPNODN,IPFACN,IPNODF,IPNODB,IPFACB, C + WORK,IWORK,CWORK) C C********************************************************************** C C C THE END OF EACH TIME STEP C THIS SUBROUTINE IS CALLED BEFORE THE START OF THE RUN AS WELL AS AT C THE END OF EACH TIME STEP C C >>> IMPORTANT <<< C >>> <<< C >>> USERS MAY ONLY ADD OR ALTER PARTS OF THE SUBROUTINE WITHIN <<< C >>> THE DESIGNATED USER AREAS <<< C C********************************************************************** C C THIS SUBROUTINE IS CALLED BY THE FOLLOWING SUBROUTINES C CUSR TRNMOD C C********************************************************************** C CREATED C 27/04/90 ADB C MODIFIED C 05/08/91 IRH NEW STRUCTURE C 01/10/91 DSC REDUCE COMMENT LINE GOING OVER COLUMN 72. C 29/11/91 PHA UPDATE CALLED BY COMMENT, ADD RF ARGUMENT, C CHANGE LAST DIMENSION OF RS TO 6 AND IVERS TO 2 C 05/06/92 PHA ADD PRECISION FLAG AND CHANGE IVERS TO 3 C 03/07/92 DSC CORRECT COMMON MLTGRD. C 23/11/93 CSH EXPLICITLY DIMENSION IPVERT ETC. C 03/02/94 PHA CHANGE FLOW3D TO CFDS-FLOW3D C 22/08/94 NSW MOVE 'IF(IUSED.EQ.0) RETURN' OUT OF USER AREA C 19/12/94 NSW CHANGE FOR CFX-F3D C 02/07/97 NSW UPDATE FOR CFX-4 C C********************************************************************** C C SUBROUTINE ARGUMENTS C C U - U COMPONENT OF VELOCITY C V - V COMPONENT OF VELOCITY C W - W COMPONENT OF VELOCITY C P - PRESSURE C VFRAC - VOLUME FRACTION C DEN - DENSITY OF FLUID C VIS - VISCOSITY OF FLUID C TE - TURBULENT KINETIC ENERGY C ED - EPSILON C RS - REYNOLD STRESSES C T - TEMPERATURE C H - ENTHALPY C RF - REYNOLD FLUXES C SCAL - SCALARS (THE FIRST 'NCONC' OF THESE ARE MASS FRACTIONS) C XP - X COORDINATES OF CELL CENTRES C YP - Y COORDINATES OF CELL CENTRES C ZP - Z COORDINATES OF CELL CENTRES C VOL - VOLUME OF CELLS C AREA - AREA OF CELLS C VPOR - POROUS VOLUME C ARPOR - POROUS AREA C WFACT - WEIGHT FACTORS C CONV - CONVECTION COEFFICIENTS C C IPT - 1D POINTER ARRAY C IBLK - BLOCK SIZE INformATION C IPVERT - POINTER FROM CELL CENTERS TO 8 NEIGHBOURING VERTICES C IPNODN - POINTER FROM CELL CENTERS TO 6 NEIGHBOURING CELLS C IPFACN - POINTER FROM CELL CENTERS TO 6 NEIGHBOURING FACES C IPNODF - POINTER FROM CELL FACES TO 2 NEIGHBOURING CELL CENTERS C IPNODB - POINTER FROM BOUNDARY CENTERS TO CELL CENTERS C IPFACB - POINTER FROM BOUNDARY CENTERS TO BOUNDARY FACESS C C WORK - REAL WORKSPACE ARRAY C IWORK - INTEGER WORKSPACE ARRAY C CWORK - CHARACTER WORKSPACE ARRAY C C SUBROUTINE ARGUMENTS PRECEDED WITH A '*' ARE ARGUMENTS THAT MUST C BE SET BY THE USER IN THIS ROUTINE. C C NOTE THAT OTHER DATA MAY BE OBTAINED FROM CFX-4 USING THE C ROUTINE GETADD, FOR FURTHER DETAILS SEE THE VERSION 4 C USER MANUAL. C C********************************************************************** C C C LOGICAL LDEN,LVIS,LTURB,LTEMP,LBUOY,LSCAL,LCOMP C + ,LRECT,LCYN,LAXIS,LPOROS,LTRANS C C CHARACTER*(*) CWORK C C++++++++++++++++ USER AREA 1 +++++++++++++++++++++++++++++ C---- AREA FOR USERS EXPLICITLY DECLARED VARIABLES C C++++++++++++++++ END OF USER AREA 1 +++++++++++++++++++++++++ C C COMMON C + /ALL/ NBLOCK,NCELL,NBDRY,NNODE,NFACE,NVERT,NDIM C + /ALLWRK/ NRWS,NIWS,NCWS,IWRFRE,IWIFRE,IWCFRE C + /ADDIMS/ NPHASE,NSCAL,NVAR,NPROP C + ,NDVAR,NDPROP,NDXNN,NDGEOM,NDCOEF,NILIST,NRLIST,NTOPOL C + /CMBEBR/ CFL,CFU,DENS,DIMS C + ,ALIN,ACROSS,SLIN,SCROSS,SNA,SNE C + ,ACHEM,TACT,EFU,EOX,DIE,RBMAX,CMBPAR(9) C + /CHKUSR/ IVERS,IUCALL,IUSED C + /CONC/ NCONC C + /DEVICE/ NREAD,NWRITE,NRDISK,NWDISK C + /IDUM/ ILEN,JLEN C + /LOGIC/ LDEN,LVIS,LTURB,LTEMP,LBUOY,LSCAL,LCOMP C + ,LRECT,LCYN,LAXIS,LPOROS,LTRANS C + /MLTGRD/ MLEVEL,NLEVEL,ILEVEL C + /SGLDBL/ IFLGPR,ICHKPR C + /SPARM/ SMALL,SORMAX,NITER,INDPRI,MAXIT,NODREF,NODMON C + /TIMUSR/ DTUSR C + /TRANSI/ NSTEP,KSTEP,MF,INCORE C + /TRANSR/ TIME,DT,DTINVF,TPARM C C++++++++++++++++ USER AREA 2 +++++++++++++++++++++++++++++ C---- AREA FOR USERS TO DECLARE THEIR OWN COMMON BLOCKS C THESE SHOULD START WITH THE CHARACTERS 'UC' TO ENSURE C NO CONFLICT WITH NON-USER COMMON BLOCKS C C++++++++++++++++ END OF USER AREA 2 +++++++++++++++++++++++ C C DIMENSION C + U(NNODE,NPHASE),V(NNODE,NPHASE),W(NNODE,NPHASE),P(NNODE,NPHASE) C +,VFRAC(NNODE,NPHASE),DEN(NNODE,NPHASE),VIS(NNODE,NPHASE) C +,TE(NNODE,NPHASE),ED(NNODE,NPHASE),RS(NNODE,NPHASE,6) C +,T(NNODE,NPHASE),H(NNODE,NPHASE),RF(NNODE,NPHASE,4) C +,SCAL(NNODE,NPHASE,NSCAL) C DIMENSION C + XP(NNODE),YP(NNODE),ZP(NNODE) C +,VOL(NCELL),AREA(NFACE,3),VPOR(NCELL),ARPOR(NFACE,3) C +,WFACT(NFACE),CONV(NFACE,NPHASE) C +,IPT(*),IBLK(5,NBLOCK) C +,IPVERT(NCELL,8),IPNODN(NCELL,6),IPFACN(NCELL,6),IPNODF(NFACE,4) C +,IPNODB(NBDRY,4),IPFACB(NBDRY) C +,IWORK(*),WORK(*),CWORK(*) C++++++++++++++++ USER AREA 3 ++++++++++++++++++++++++++++ C---- AREA FOR USERS TO DIMENSION THEIR ARRAYS C C---- AREA FOR USERS TO DEFINE DATA STATEMENTS C C++++++++++++++++ END OF USER AREA 3 ++++++++++++++++++++++ C C---- STATEMENT FUNCTION FOR ADDRESSING C IP(I,J,K)=IPT((K-1)*ILEN*JLEN+(J-1)*ILEN+I) C C----VERSION NUMBER OF USER ROUTINE AND PRECISION FLAG C C IVERS=3 C ICHKPR = 1 C C++++++++++++++++ USER AREA 4 +++++++++++++++++++++++++++++ C---- TO USE THIS USER ROUTINE FIRST SET IUSED=1 C C IUSED=1 C C++++++++++++++++ END OF USER AREA 4 ++++++++++++++++++ C C IF (IUSED.EQ.0) RETURN C C---- FRONTEND CHECKING OF USER ROUTINE C IF (IUCALL.EQ.0) RETURN C C++++++++++++++++ USER AREA 5 +++++++++++++++++++++++++++ C C---- EXAMPLE (SET TIME INCREMENT FOR NEXT TIME STEP) C C DTUSR = 0.1 C C----END OF EXAMPLE C C----TO SET TIME INCREMENT FOR NEXT TIME STEP C----FOR REFERENCE EXAMPLE 17 C----CHECK THAT THE TIME STEP IS LESS THAN OR EQUAL TO DTBMAX C C WRITE (NWRITE,'(/1X,A,1P,E12.3/)') C + 'MAXIMUM BURNING RATE ',RBMAX C DTBMAX=0.25/(RBMAX+1.0E-20) C IF (DT.GT.DTBMAX) DTUSR=DTBMAX C++++++++++++++++ END OF USER AREA 5 ++++++++++++++++++++++ C C RETURN C END

frogfish · 发表于 2005-8-26 09:44

(1) 說明： 以上所附之副程式為CFX4所提供的一個副程式，其功用為允許使用者在流場中加入一個source，我們利用它加入一個質量分率以及一個發熱量的source。而使用者所能更改的部分為程式中USER AREA的部分，我們只改變AREA 5的部分，我們分別說明如下： 1： CALL GETVAR這程式使我們能加入soure，而參數H代表要加入的變數為heat flux。 2： CALL GETVAR這程式使我們能加入soure，而變數SCAL代表要加入的變數是mass fraction。 3：CALL GETVAR這程式使我們在加入heat flux source後，亦能同時加入mass flux source(名稱為主程式中的”MASS FRACTION”，也就是二氧化碳)。 4-5：當equation number等於行號1裡的equation number時，在BLOCK NAME為”solid 43”的區塊中做指令輸入。 6-15：在此區塊的I方向的第300到第310個格點處、J方向的第3到第5個格點處、K方向的第4到第5個格點處，每個格點加入232323*2.5的heat source，由此算出全部的由此算出全部的heat flux約為10MW。 16-26：同理當equation number等於行號2、3裡的equation number時，在BLOCK NAME為”solid 43”的區塊中做指令輸入，同樣在I方向的第300到第310個格點處、J方向的第3到第5個格點處、K方向的第4到第5個格點處，每個格點加入0.182的mass fraction source，至於加入的mass fraction由主程式定義，由此可以知道是二氧化碳。 (2)附註： 1. 主程式中邊界未定義其PATCH型態處，CFX4自動將其設定為絕緣的WALL。 2. 火災模擬時的time step最好先設定較小值，如此一來程式較容易收斂。而當流場跑到穩定發展時，即可提高time step，如此一來可大量節省運算時間。

yzsldj · 发表于 2009-2-18 14:06

哦，很久以前的帖子啦。
有应用实例吗？

haobaobaos · 发表于 2009-2-21 16:05

:@) :@) :@) :@) 没有实例啊看不懂源代码

忠诚憨厚 · 发表于 2009-7-15 11:01

thank a lot for sharing！

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