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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
|
*DECK VALU1B
SUBROUTINE VALU1B (IDIM,LX,LY,L4,X,Y,XXX,YYY,EVT,ISS,IELEM,IXLG,
+ IYLG,AXY)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Interpolate the flux distribution for MCFD method in 2D.
*
*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
* IDIM number of dimensions (1 or 2).
* LX number of elements along the X axis.
* LY number of elements along the Y axis.
* L4 dimension of unknown array EVT.
* X Cartesian coordinates along the X axis where the flux is
* interpolated.
* Y Cartesian coordinates along the Y axis where the flux is
* interpolated.
* XXX Cartesian coordinates along the X axis.
* YYY Cartesian coordinates along the Y axis.
* EVT variational coefficients of the flux.
* ISS mixture index assigned to each element.
* IELEM MCFD polynomial order (IELEM=1 is the mesh centered finite
* difference method).
* IXLG number of interpolated points according to X.
* IYLG number of interpolated points according to Y.
*
*Parameters: output
* AXY interpolated fluxes.
*
*----------------------------------------------------------------------
*
*----
* SUBROUTINE ARGUMENTS
*----
INTEGER IDIM,LX,LY,L4,ISS(LX*LY),IELEM,IXLG,IYLG
REAL X(IXLG),Y(IYLG),XXX(LX+1),YYY(LY+1),EVT(L4),AXY(IXLG,IYLG)
*----
* ALLOCATABLE ARRAYS
*----
INTEGER, ALLOCATABLE, DIMENSION(:) :: IWRK
*----
* Scratch storage allocation
*----
ALLOCATE(IWRK(LX*LY))
*
NUM=0
DO 10 K=1,LX*LY
IF (ISS(K).EQ.0) GO TO 10
NUM=NUM+1
IWRK(K)=NUM
10 CONTINUE
*
LL4=L4/IELEM**(IDIM-1)
DO 120 J=1,IYLG
ORDO=Y(J)
DO 110 I=1,IXLG
ABSC=X(I)
GAR=0.0
*
* Find the finite element index containing the interpolation point
IS=0
JS=0
DO 20 L=1,LX
IS=L
IF((ABSC.GE.XXX(L)).AND.(ABSC.LE.XXX(L+1))) GO TO 30
20 CONTINUE
CALL XABORT('VALU1B: WRONG INTERPOLATION(1).')
30 DO 40 L=1,LY
JS=L
IF((ORDO.GE.YYY(L)).AND.(ORDO.LE.YYY(L+1))) GO TO 70
40 CONTINUE
CALL XABORT('VALU1B: WRONG INTERPOLATION(2).')
70 IEL=(JS-1)*LX+IS
IF(ISS(IEL).EQ.0) GO TO 100
U=(ABSC-0.5*(XXX(IS)+XXX(IS+1)))/(XXX(IS+1)-XXX(IS))
V=(ORDO-0.5*(YYY(JS)+YYY(JS+1)))/(YYY(JS+1)-YYY(JS))
L=1+IELEM*(IWRK(IEL)-1)
DO 90 N2=0,IELEM-1
DO 80 N1=0,IELEM-1
GAR=GAR+VALPL(N1,U)*VALPL(N2,V)*EVT(LL4*N2+N1+L)
80 CONTINUE
IF ((IDIM.EQ.1).AND.(N2.EQ.0)) GO TO 100
90 CONTINUE
100 AXY(I,J)=GAR
110 CONTINUE
120 CONTINUE
*----
* Scratch storage deallocation
*----
DEALLOCATE(IWRK)
RETURN
END
|
