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*DECK FLDNOR
SUBROUTINE FLDNOR(IPSYS,NUN,NGRP,NEL,NBMIX,MAT,VOL,IDL,HTYPE,
1 EVECT,FNORM)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Normalization of the neutron flux
*
*Copyright:
* Copyright (C) 2010 Ecole Polytechnique de Montreal
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version
*
*Author(s): A. Hebert
*
*Parameters: input
* IPSYS L_SYSTEM pointer to the system matrices.
* NUN number of flux unknowns per energy group.
* NGRP number of energy groups.
* NEL number of finite elements.
* NBMIX number of material mixtures.
* MAT material mixture indices per finite element.
* VOL volumes of the finite elements.
* IDL position of averaged flux in neutron flux unknowns.
* HTYPE type of flux: 'DIRE' or 'ADJO'
* EVECT neutron flux unknowns.
*
*Parameters: output
* EVECT normalized flux.
* FNORM normalization factor.
*
*-----------------------------------------------------------------------
*
USE GANLIB
*----
* SUBROUTINE ARGUMENTS
*----
TYPE(C_PTR) IPSYS
INTEGER NUN,NGRP,NEL,NBMIX,MAT(NEL),IDL(NEL)
CHARACTER*4 HTYPE
REAL VOL(NEL),EVECT(NUN,NGRP),FNORM
*----
* LOCAL VARIABLES
*----
CHARACTER*12 TEXT12
REAL, DIMENSION(:), ALLOCATABLE :: SGD
*----
* COMPUTE THE POWER INTEGRAL
*----
POWER=0.0
IF(HTYPE.EQ.'DIRE') THEN
ALLOCATE(SGD(NBMIX))
DO 25 IGR=1,NGRP
DO 20 JGR=1,NGRP
WRITE(TEXT12,'(4HFISS,2I3.3)') IGR,JGR
CALL LCMLEN(IPSYS,TEXT12,ILONG,ITYLCM)
IF(ILONG.EQ.0) GO TO 20
IF(ILONG.GT.NBMIX) CALL XABORT('FLDNOR: NBMIX OVERFLOW.')
CALL LCMGET(IPSYS,TEXT12,SGD)
DO 10 IEL=1,NEL
IND=IDL(IEL)
IBM=MAT(IEL)
IF(IND.EQ.0) GO TO 10
POWER=POWER+VOL(IEL)*SGD(IBM)*EVECT(IND,JGR)
10 CONTINUE
20 CONTINUE
25 CONTINUE
DEALLOCATE(SGD)
ELSE IF(HTYPE.EQ.'ADJO') THEN
DO 35 JGR=1,NGRP
DO 30 IEL=1,NEL
IND=IDL(IEL)
IF(IND.EQ.0) GO TO 30
POWER=POWER+VOL(IEL)*EVECT(IND,JGR)
30 CONTINUE
35 CONTINUE
ENDIF
IF(POWER.EQ.0.0) CALL XABORT('FLDNOR: UNABLE TO NORMALIZE.')
FNORM=1.0/POWER
*----
* NORMALIZE THE FLUX
*----
DO 45 IND=1,NUN
DO 40 IGR=1,NGRP
EVECT(IND,IGR)=EVECT(IND,IGR)*FNORM
40 CONTINUE
45 CONTINUE
RETURN
END
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