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MOLECULES_ENTER.F90
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MOLECULES_ENTER.F90
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SUBROUTINE MOLECULES_ENTR
USE MOLECS
USE CALC
USE CELLINFO
USE GAS
USE NODEINFO
USE SAMPLES
IMPLICIT NONE
INTEGER :: I,J,K,L,M,N,NENT,CELL0,CELL1,STAT,TEMP,DRIFT,N0
REAL*8 :: A,B,C,AA,BB,CC,U,VN,VP,XI,YI,X,Y,DX,DY,DTIM,RANF
REAL*8,EXTERNAL ::VEC_PRODUCT
INTEGER, EXTERNAL :: ADD_ONE,SEARCH_CCELL,DIS_DETECT
!INFLOW BOUNDARY
TEMP=0
N0=NM
DO I=1,NBEDGES(2)
DO J=1,MSP
A=ENTR(1,J,I)*DTM+ENTR(2,J,I)
NENT=A
TEMP=TEMP+NENT
ENTR(2,J,I)=A-NENT
IF (NENT .GT. 0) THEN
DO K=1,NENT
STAT=1
DO WHILE( STAT .EQ. 1)
DO WHILE (NM .GE. MNM)
CALL EXTEND_MNM(1.001D00)
END DO
NM=NM+1
AA=DMAX1(0.D00,ENTR(3,J,I)-3.D00) !这里得到的是分子速度/最几热运动速度的采样区间
BB=DMAX1(3.D00,ENTR(3,J,I)+3.D00)
A=-1.0D00
CALL RANDOM_NUMBER(RANF)
DO WHILE(A .LE. RANF)
CALL RANDOM_NUMBER(RANF)
B=AA+(BB-AA)*RANF
!B is the velocity/most probable thermal velocit of molecule normal to the boundary
U=B-ENTR(3,J,I) !thermal velocity/most probable velocity
A=(2.D00*B/ENTR(4,J,I))*DEXP(ENTR(5,J,I)-U*U)
END DO
VN=B*VMP(J)
CALL RVELC(VP,PV(3,NM),VMP(J))
VP=VP+VEC_PRODUCT(ENTRYIN(1,I),ENTRYIN(2,I),VFX,VFY)
PV(1,NM)=VN*ENTRYIN(1,I)-VP*ENTRYIN(2,I)
PV(2,NM)=VN*ENTRYIN(2,I)+VP*ENTRYIN(1,I)
IF (ISPR(1,J) .GT. 0) CALL SROT(J,FTMP,PROT(NM))
IF (MMVM > 0) THEN
DO L=1,ISPV(J)
CALL SVIB(J,FVTMP,IPVIB(L,NM),L)
END DO
END IF
IPSP(NM)=J
CELL0=IBEDGE1(1,I)
!--advance the molecule into the flow
CALL RANDOM_NUMBER(RANF)
XI=RANF*(NODES(1,ICELL(ADD_ONE(IBEDGE1(2,I)),IBEDGE1(1,I)))-&
&NODES(1,ICELL(IBEDGE1(2,I),IBEDGE1(1,I))))
XI=XI+NODES(1,ICELL(IBEDGE1(2,I),IBEDGE1(1,I)))
YI=RANF*(NODES(2,ICELL(ADD_ONE(IBEDGE1(2,I)),IBEDGE1(1,I)))-&
&NODES(2,ICELL(IBEDGE1(2,I),IBEDGE1(1,I))))
YI=YI+NODES(2,ICELL(IBEDGE1(2,I),IBEDGE1(1,I)))
!The initial position (XI,YI) is on the boundary edge
!in order to obviate possible error in SEAR_CELL
!generate a little drift
CALL RANDOM_NUMBER(RANF)
DTIM=RANF*DTM
DRIFT=-3
X=XI+DTIM*PV(1,NM)*(10.0D00)**DRIFT
Y=YI+DTIM*PV(2,NM)*(10.0D00)**DRIFT
DO WHILE(DIS_DETECT(X,Y,CELL0) .EQ. 0)
DRIFT=DRIFT-1
X=XI+DTIM*PV(1,NM)*(10.0D00)**DRIFT
Y=YI+DTIM*PV(2,NM)*(10.0D00)**DRIFT
END DO
XI=X; YI=Y
X=XI+DTIM*PV(1,NM)*(1.0D00-10.0D00**DRIFT)
Y=YI+DTIM*PV(2,NM)*(1.0D00-10.0D00**DRIFT)
ENTMASS=ENTMASS+SP(5,J)
N=NM
CALL SEARCH_CELL(N,XI,YI,X,Y,CELL0,CELL1,DTIM,STAT)
IF( STAT .EQ. 0)THEN
PX(NM)=X
PY(NM)=Y
IPCCELL(NM)= SEARCH_CCELL(X,Y,CELL1)+ICELL(8,CELL1)
ELSE
L=IPSP(NM)
ENTMASS=ENTMASS-SP(5,L)
NM=NM-1
END IF
!当分子移出时，NM->NM-1,STAT=1,则以上操作重新进行，重建NM分子
!当分子保留时，CELL1返回所在CELL，STAT=0跳出这个do while
END DO
END DO
END IF
END DO
END DO
!OUT FLOW BOUNDARY
DO I=1,NBEDGES(3)
DO J=1,MSP
A=ENTR(1,J,I+NBEDGES(2))*DTM+ENTR(2,J,I+NBEDGES(2))
NENT=A
ENTR(2,J,I+NBEDGES(2))=A-NENT
IF (NENT .GT. 0) THEN
DO K=1,NENT
STAT=1
DO WHILE( STAT .EQ. 1)
DO WHILE (NM .GE. MNM)
CALL EXTEND_MNM(1.001D00)
END DO
NM=NM+1
AA=DMAX1(0.D00,ENTR(3,J,I+NBEDGES(2))-3.D00) !这里得到的是分子速度/最几热运动速度的采样区间
BB=DMAX1(3.D00,ENTR(3,J,I+NBEDGES(2))+3.D00)
A=-1.0D00
CALL RANDOM_NUMBER(RANF)
DO WHILE(A .LE. RANF)
CALL RANDOM_NUMBER(RANF)
B=AA+(BB-AA)*RANF
!B is the velocity/most probable thermal velocit of molecule normal to the boundary
U=B-ENTR(3,J,I+NBEDGES(2)) !thermal velocity/most probable velocity
A=(2.D00*B/ENTR(4,J,I+NBEDGES(2)))*DEXP(ENTR(5,J,I+NBEDGES(2))-U*U)
END DO
VN=B*VMP(J)
CALL RVELC(VP,PV(3,NM),VMP(J))
VP=VP+VEC_PRODUCT(ENTRYOUT(1,I),ENTRYOUT(2,I),VFX,VFY)
PV(1,NM)=VN*ENTRYOUT(1,I)-VP*ENTRYOUT(2,I)
PV(2,NM)=VN*ENTRYOUT(2,I)+VP*ENTRYOUT(1,I)
IF (ISPR(1,J) .GT. 0) CALL SROT(J,FTMP,PROT(NM))
IF (MMVM > 0) THEN
DO L=1,ISPV(J)
CALL SVIB(J,FVTMP,IPVIB(L,NM),L)
END DO
END IF
IPSP(NM)=J
CELL0=IBEDGE2(1,I)
!--advance the molecule into the flow
CALL RANDOM_NUMBER(RANF)
XI=RANF*(NODES(1,ICELL(ADD_ONE(IBEDGE2(2,I)),IBEDGE2(1,I)))-&
&NODES(1,ICELL(IBEDGE2(2,I),IBEDGE2(1,I))))
XI=XI+NODES(1,ICELL(IBEDGE2(2,I),IBEDGE2(1,I)))
YI=RANF*(NODES(2,ICELL(ADD_ONE(IBEDGE2(2,I)),IBEDGE2(1,I)))-&
&NODES(2,ICELL(IBEDGE2(2,I),IBEDGE2(1,I))))
YI=YI+NODES(2,ICELL(IBEDGE2(2,I),IBEDGE2(1,I)))
!The initial position (XI,YI) is on the boundary edge
!in order to obviate possible error in SEAR_CELL
!generate a little drift
CALL RANDOM_NUMBER(RANF)
DTIM=RANF*DTM
DRIFT=-3
X=XI+DTIM*PV(1,NM)*(10.0D00)**DRIFT
Y=YI+DTIM*PV(2,NM)*(10.0D00)**DRIFT
DO WHILE(DIS_DETECT(X,Y,CELL0) .EQ. 0)
DRIFT=DRIFT-1
X=XI+DTIM*PV(1,NM)*(10.0D00)**DRIFT
Y=YI+DTIM*PV(2,NM)*(10.0D00)**DRIFT
END DO
XI=X; YI=Y
X=XI+DTIM*PV(1,NM)*(1.0D00-10.0D00**DRIFT)
Y=YI+DTIM*PV(2,NM)*(1.0D00-10.0D00**DRIFT)
ENTMASS=ENTMASS+SP(5,J)
N=NM
CALL SEARCH_CELL(N,XI,YI,X,Y,CELL0,CELL1,DTIM,STAT)
!lout useless
IF( STAT .EQ. 0)THEN
PX(NM)=X
PY(NM)=Y
IPCCELL(NM)= SEARCH_CCELL(X,Y,CELL1)+ICELL(8,CELL1)
ELSE
L=IPSP(NM)
ENTMASS=ENTMASS-SP(5,L)
NM=NM-1
END IF
!当分子移出时，NM->NM-1,STAT=1,则以上操作重新进行，重建NM分子
!当分子保留时，CELL1返回所在CELL，STAT=0跳出这个do while
END DO
END DO
END IF
END DO
END DO
WRITE(*,*) "FINISH Molecule Enter","Enter=",NM-N0
WRITE (9,*) "FINISH Molecule Enter","Enter=",NM-N0
END SUBROUTINE