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
|
*DECK KINB02
SUBROUTINE KINB02(SGD,IELEM,NREG,LL4,NBMIX,MAT,KN,VOL,F2,F3)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Multiplication of a matrix by a vector in mixed-dual finite element
* diffusion approximation (Cartesian geometry). Special version for
* Bivac.
*
*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
* SGD mixture-ordered cross sections.
* IELEM degree of the Lagrangian finite elements: =1 (linear);
* =2 (parabolic); =3 (cubic); =4 (quartic).
* NREG number of elements in Bivac.
* LL4 number of unknowns per group in Bivac.
* NBMIX number of macro-mixtures.
* MAT mixture index per region.
* KN element-ordered unknown list.
* VOL volume of regions.
* F2 vector to multiply.
*
*Parameters: output
* F3 result of the multiplication.
*
*-----------------------------------------------------------------------
*
*----
* SUBROUTINE ARGUMENTS
*----
INTEGER IELEM,NREG,LL4,NBMIX,MAT(NREG),KN(5*NREG)
REAL SGD(NBMIX),VOL(NREG),F2(LL4),F3(LL4)
*
NUM1=0
DO 30 K=1,NREG
L=MAT(K)
IF(L.EQ.0) GO TO 30
VOL0=VOL(K)
IF(VOL0.EQ.0.0) GO TO 20
DO 15 I0=1,IELEM
DO 10 J0=1,IELEM
JND1=KN(NUM1+1)+(I0-1)*IELEM+J0-1
F3(JND1)=F3(JND1)+VOL0*SGD(L)*F2(JND1)
10 CONTINUE
15 CONTINUE
20 NUM1=NUM1+5
30 CONTINUE
RETURN
END
|
