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
76
77
78
79
80
81
82
83
|
*DECK FLDBN2
SUBROUTINE FLDBN2 (NEL,LL4,IELEM,CYLIND,EVECT,XX,DD,MAT,VOL,IDL,
1 KN,LC,T,TS)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Calculation of the averaged flux with a primal finite element method.
*
*Copyright:
* Copyright (C) 2002 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
* NEL total number of finite elements.
* LL4 order of the system matrices.
* IELEM degree of the Lagrangian finite elements: =1 (linear);
* =2 (parabolic); =3 (cubic); =4 (quartic).
* CYLIND cylindrical geometry flag (set with CYLIND=.true.).
* EVECT variational coefficients of the flux. The information is
* contained in position EVECT(1) to EVECT(LL4).
* XX X-side of each element.
* DD used with cylindrical geometry.
* MAT mixture index assigned to each element.
* VOL volume of each element.
* IDL position of the average flux component associated with each
* volume.
* KN element-ordered unknown list.
* LC order of the finite element basis.
* T linear product vector.
* TS linear product vector.
*
*Parameters: output
* EVECT averaged fluxes. The information is contained in positions
* EVECT(IDL(I)).
*
*-----------------------------------------------------------------------
*
*----
* SUBROUTINE ARGUMENTS
*----
INTEGER NEL,LL4,IELEM,MAT(NEL),IDL(NEL),KN(NEL*IELEM*IELEM),LC
REAL EVECT(LL4+NEL),XX(NEL),DD(NEL),VOL(NEL),T(LC),TS(LC)
LOGICAL CYLIND
*----
* LOCAL VARIABLES
*----
INTEGER IJ1(25),IJ2(25)
*----
* COMPUTE VECTORS IJ1 AND IJ2
*----
LL=LC*LC
DO 10 I=1,LL
IJ1(I)=1+MOD(I-1,LC)
IJ2(I)=1+(I-IJ1(I))/LC
10 CONTINUE
*
NUM1=0
DO 40 K=1,NEL
IF(MAT(K).EQ.0) GO TO 40
EVECT(IDL(K))=0.0
IF(VOL(K).EQ.0.0) GO TO 30
DO 20 I=1,LL
IND1=KN(NUM1+I)
IF(IND1.EQ.0) GO TO 20
I1=IJ1(I)
I2=IJ2(I)
IF(CYLIND) THEN
SS=(T(I1)+TS(I1)*XX(K)/DD(K))*T(I2)
ELSE
SS=T(I1)*T(I2)
ENDIF
EVECT(IDL(K))=EVECT(IDL(K))+SS*EVECT(IND1)
20 CONTINUE
30 NUM1=NUM1+LL
40 CONTINUE
RETURN
END
|
