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Revision 1252 - (hide annotations) (download) (as text)
Sat Jan 27 06:29:17 2007 UTC (17 years, 2 months ago) by johnpye
File MIME type: text/x-ascend
File size: 1977 byte(s)
Removed the 'command line solver' from the Tcl/Tk interface.
Deactivated the 'plot' command in slv_interface.
Eliminated various #include <compiler/*> from the solver.
Added another sample model (which current fails because of problem with non-incident diff vars.
1 johnpye 1247 REQUIRE "ivpsystem.a4l";
2     REQUIRE "atoms.a4l";
3     (*
4 johnpye 1252 Sample problem 'HIRES' from the Test Set for IVP Solvers
5    
6 johnpye 1247 'High Irradiance RESponse', from plant physiology, describing how light is
7     involved in morphogenesis.
8    
9     http://pitagora.dm.uniba.it/~testset/problems/hires.php
10    
11     We're not really concerned with the details of this problem. We're just
12     trying to determine that our solver gets the right answer. High-precision
13     solution results are provided online and we aim to reproduce those here.
14     *)
15    
16     MODEL hires;
17     y[1..8] IS_A solver_var;
18     dy_dt[1..8] IS_A solver_var;
19    
20     f1: dy_dt[1] = -1.71*y[1] + 0.43*y[2] + 8.32*y[3] + 0.0007;
21    
22     f2: dy_dt[2] = 1.71*y[1] - 8.75*y[2];
23    
24     f3: dy_dt[3] = -10.03*y[3] + 0.43*y[4] + 0.035*y[5];
25    
26     f4: dy_dt[4] = 8.32*y[2] + 1.71*y[3] - 1.12*y[4];
27    
28     f5: dy_dt[5] = -1.745*y[5] + 0.43*y[6] +0.43*y[7];
29    
30     f6: dy_dt[6] = -280*y[6]*y[8] + 0.69*y[4] + 1.71*y[5] - 0.43*y[6] + 0.69*y[7];
31    
32     f7: dy_dt[7] = 280*y[6]*y[8] - 1.81*y[7];
33    
34     f8: dy_dt[8] = -280*y[6]*y[8] + 1.81*y[7];
35    
36     t IS_A time;
37    
38     METHODS
39     METHOD values;
40     FOR i IN [1..8] DO
41     y[i] := 0;
42     END FOR;
43     y[1] := 1;
44     y[8] := 0.0057;
45     t := 0 {s};
46     END values;
47     (* integrate up to t = 321.8122 *)
48     METHOD ode_init;
49     FOR i IN [1..8] DO
50     y[i].ode_id := i; dy_dt[i].ode_id := i;
51     y[i].ode_type := 1; dy_dt[i].ode_type := 2;
52     y[i].obs_id := i;
53     END FOR;
54     t.ode_type := -1;
55     END ode_init;
56     METHOD self_test;
57 johnpye 1251 ASSERT abs(y[1] - 0.7371312573325668e-3) < 1e-15;
58     ASSERT abs(y[2] - 0.1442485726316185e-3) < 1e-15;
59     ASSERT abs(y[3] - 0.5888729740967575e-4) < 1e-15;
60     ASSERT abs(y[4] - 0.1175651343283149e-2) < 1e-15;
61     ASSERT abs(y[5] - 0.2386356198831331e-2) < 1e-13;
62     ASSERT abs(y[6] - 0.6238968252742796e-2) < 1e-13;
63     ASSERT abs(y[7] - 0.2849998395185769e-2) < 1e-14;
64     ASSERT abs(y[8] - 0.2850001604814231e-2) < 1e-14;
65 johnpye 1247 END self_test;
66     METHOD specify;
67     (* nothing needs to be fixed *)
68     END specify;
69     METHOD on_load;
70     RUN reset; RUN values;
71     RUN ode_init;
72     END on_load;
73     END hires;
74    

john.pye@anu.edu.au
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