alkyl.gms:
Reference:
- Berna, T, Locke, M, and Westerberg, A W, A New Approach to Optimization of Chemical Processes. American Institute of Chemical Engineers Journal 26, 1 (1980), 37-43.
- Original source: GAMS Model of alkyl.gms from GAMS Model Library
Point:
p1
Best known point: p1 with value -1.7650
<![CDATA[
* NLP written by GAMS Convert at 07/26/01 10:00:56
*
* Equation counts
* Total E G L N X
* 8 8 0 0 0 0
*
* Variable counts
* x b i s1s s2s sc si
* Total cont binary integer sos1 sos2 scont sint
* 15 15 0 0 0 0 0 0
* FX 0 0 0 0 0 0 0 0
*
* Nonzero counts
* Total const NL DLL
* 32 13 19 0
*
* Solve m using NLP minimizing objvar;
Variables objvar,x2,x3,x4,x5,x6,x7,x8,x9,x10,x11,x12,x13,x14,x15;
Positive Variables x2,x3,x4,x5,x6;
Equations e1,e2,e3,e4,e5,e6,e7,e8;
e1.. 6.3*x5*x8 + objvar - 5.04*x2 - 0.35*x3 - x4 - 3.36*x6 =E= 0;
e2.. - 0.819672131147541*x2 + x5 - 0.819672131147541*x6 =E= 0;
e3.. 0.98*x4 - x7*(0.01*x5*x10 + x4) =E= 0;
e4.. - x2*x9 + 10*x3 + x6 =E= 0;
e5.. x5*x12 - x2*(1.12 + 0.13167*x9 - 0.0067*x9*x9) =E= 0;
e6.. x8*x13 - 0.01*(1.098*x9 - 0.038*x9*x9) - 0.325*x7 =E= 0.57425;
e7.. x10*x14 + 22.2*x11 =E= 35.82;
e8.. x11*x15 - 3*x8 =E= -1.33;
* set non default bounds
x2.up = 2;
x3.up = 1.6;
x4.up = 1.2;
x5.up = 5;
x6.up = 2;
x7.lo = 0.85; x7.up = 0.93;
x8.lo = 0.9; x8.up = 0.95;
x9.lo = 3; x9.up = 12;
x10.lo = 1.2; x10.up = 4;
x11.lo = 1.45; x11.up = 1.62;
x12.lo = 0.99; x12.up = 1.01010101010101;
x13.lo = 0.99; x13.up = 1.01010101010101;
x14.lo = 0.9; x14.up = 1.11111111111111;
x15.lo = 0.99; x15.up = 1.01010101010101;
* set non default levels
objvar.l = -0.9;
x2.l = 1.745;
x3.l = 1.2;
x4.l = 1.1;
x5.l = 3.048;
x6.l = 1.974;
x7.l = 0.893;
x8.l = 0.928;
x9.l = 8;
x10.l = 3.6;
x12.l = 1;
x13.l = 1;
x14.l = 1;
x15.l = 1;
* set non default marginals
Model m / all /;
m.limrow=0; m.limcol=0;
$if NOT '%gams.u1%' == '' $include '%gams.u1%'
Solve m using NLP minimizing objvar;
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