1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
*DECK KINT04
SUBROUTINE KINT04(IELEM,NBMIX,LL4F,NBLOS,MAT,SIDE,ZZ,FRZ,SGD,KN,
> IPERT,F2,F3)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Multiplication of a matrix by a vector in Thomas-Raviart-Schneider
* mixed-dual finite element approximation (hexagonal geometry). Special
* version for Trivac.
*
*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
* IELEM degree of the Lagrangian finite elements.
* NBMIX maximum number of material mixtures.
* LL4F total number of flux unknowns per group.
* NBLOS number of lozenges per direction, taking into account
* mesh-splitting.
* MAT mixture index assigned to each element.
* SIDE side of an hexagon.
* ZZ Z-directed mesh spacings.
* FRZ volume fractions for the axial SYME boundary condition.
* SGD cross section per material mixture.
* KN ADI permutation indices for the volumes.
* IPERT mixture permutation index.
* F2 vector to multiply.
*
*Parameters: output
* F3 result of the multiplication.
*
*-----------------------------------------------------------------------
*
*----
* SUBROUTINE ARGUMENTS
*----
INTEGER IELEM,NBMIX,LL4F,NBLOS,MAT(3,NBLOS),KN(NBLOS,3),
1 IPERT(NBLOS)
REAL SIDE,ZZ(3,NBLOS),FRZ(NBLOS),SGD(NBMIX),F2(LL4F),F3(LL4F)
*----
* LOCAL VARIABLES
*----
DOUBLE PRECISION TTTT,VOL0,SIG
*
TTTT=0.5D0*SQRT(3.D00)*SIDE*SIDE
NUM=0
DO 20 KEL=1,NBLOS
IF(IPERT(KEL).EQ.0) GO TO 20
NUM=NUM+1
IBM=MAT(1,IPERT(KEL))
IF(IBM.EQ.0) GO TO 20
VOL0=TTTT*ZZ(1,IPERT(KEL))*FRZ(KEL)
SIG=SGD(IBM)
DO 12 K3=0,IELEM-1
DO 11 K2=0,IELEM-1
DO 10 K1=0,IELEM-1
JND1=(NUM-1)*IELEM**3+K3*IELEM**2+K2*IELEM+K1+1
JND2=(KN(NUM,1)-1)*IELEM**3+K3*IELEM**2+K2*IELEM+K1+1
JND3=(KN(NUM,2)-1)*IELEM**3+K3*IELEM**2+K2*IELEM+K1+1
F3(JND1)=F3(JND1)+REAL(VOL0*SIG)*F2(JND1)
F3(JND2)=F3(JND2)+REAL(VOL0*SIG)*F2(JND2)
F3(JND3)=F3(JND3)+REAL(VOL0*SIG)*F2(JND3)
10 CONTINUE
11 CONTINUE
12 CONTINUE
20 CONTINUE
RETURN
END
|
