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CONCON.SIF
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***************************
* SET UP THE INITIAL DATA *
***************************
NAME CONCON
* Problem :
* *********
* A small gas network problem.
* SIF input: Sybille Schachler, Oxford, August 1992.
* minor correction by Ph. Shott, Jan 1995.
* classification LOI2-MN-15-11
IE N 7
IE M 4
IE 1 1
VARIABLES
DO I 1 N
X P(I)
OD I
DO I 1 M
X Q(I)
X F(I)
OD I
GROUPS
DO I 1 N
XN OBJECT P(I) -1.0
OD I
DO I 1 M
XE PAN(I)
OD I
XE MBAL1 Q1 1.0 F3 -1.0
XE MBAL2 Q1 -1.0 F1 1.0
XE MBAL3 Q2 1.0 F1 -1.0
XE MBAL4 Q2 -1.0 Q3 1.0
XE MBAL5 Q3 -1.0 F2 -1.0
XE MBAL6 Q4 1.0 F2 1.0
XE MBAL7 Q4 -1.0 F4 -1.0
CONSTANTS
RE DEMAND -1000.
Z CONCON MBAL4 DEMAND
BOUNDS
FR CONCON 'DEFAULT'
RE PMAX1 914.73
RE PMAX2 904.73
ZU CONCON P3 PMAX2
ZU CONCON P5 PMAX2
ZU CONCON P1 PMAX1
ZU CONCON P7 PMAX1
XU CONCON F4 400
START POINT
DO I 1 N
XV CONCON P(I) 965
OD I
XV CONCON Q1 100
XV CONCON Q2 100
XV CONCON Q3 -100
XV CONCON Q4 -100
XV CONCON F1 1000
XV CONCON F2 1000
XV CONCON F3 1000
XV CONCON F4 1000
ELEMENT TYPE
EV SQR X
EV FORQ Y
ELEMENT USES
DO I 1 N
XT PSQ(I) SQR
ZV PSQ(I) X P(I)
OD I
DO I 1 M
XT QTO(I) FORQ
ZV QTO(I) Y Q(I)
OD I
GROUP USES
RE K -0.597053452
XE PAN1 PSQ1 1.0 PSQ2 -1.0
ZE PAN1 QTO1 K
XE PAN2 PSQ3 1.0 PSQ4 -1.0
ZE PAN2 QTO2 K
XE PAN3 PSQ4 1.0 PSQ5 -1.0
ZE PAN3 QTO3 K
XE PAN4 PSQ6 1.0 PSQ7 -1.0
ZE PAN4 QTO4 K
ENDATA
***********************
* SET UP THE FUNCTION *
* AND RANGE ROUTINES *
***********************
ELEMENTS CONCON
TEMPORARIES
L POS
L PO
R GG
R HH
R GO
R HO
M ABS
INDIVIDUALS
T SQR
F X*ABS(X)
A PO X .GT. 0.0
I PO GO 2*X
E PO GO -2*X
I PO HO 2
E PO HO -2
G X GO
H X X HO
T FORQ
F Y*ABS(Y)**0.8539
A POS Y .GT. 0.0
I POS GG 1.8539* Y**0.8539
E POS GG 1.8539* ABS(Y)**0.8539
I POS HH 1.8539*0.8539*Y**(-0.1461)
E POS HH -1.8539*0.8539*ABS(Y)**(-0.1461)
G Y GG
H Y Y HH
ENDATA