software/Nstrophy
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Print components of u

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This commit is contained in:
Ian Jauslin 2025-04-14 18:25:59 -04:00
parent 7471296e59
commit 72455cbb65
2 changed files with 14 additions and 4 deletions
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6
README.md
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@ -40,12 +40,14 @@ The available commands are
* `enstrophy`: to compute the enstrophy and various other observables. This
command prints
```
step_index time average(alpha) average(energy) average(enstrophy) alpha energy enstrophy
step_index time average(alpha) average(energy) average(enstrophy) alpha energy enstrophy Re(u(1,1)) Re(u(1,2))
```
where the averages are running averages over `print_freq`. In addition, if
the algorithm has an adaptive step, an extra column is printed with `delta`.
In addition, if alpha has a negative value (even in between `print_freq`
intervals), a line is printed with the information.
intervals), a line is printed with the information. The two components (1,1)
and (1,2) of u are included to more easily identify periodic trajectories, or
the presence of multiple attractors.
* `lyapunov`: to compute the Lyapunov exponents. This command prints
```

12
src/navier-stokes.c
View File

@ -244,10 +244,18 @@ int enstrophy(
// print to stderr so user can follow along
if(algorithm>ALGORITHM_ADAPTIVE_THRESHOLD){
fprintf(stderr,"% .8e % .8e % .8e % .8e % .8e % .8e % .8e % .8e\n",time, avg_a, avg_energy, avg_enstrophy, alpha, energy, enstrophy, step);
printf("% .15e % .15e % .15e % .15e % .15e % .15e % .15e % .15e\n",time, avg_a, avg_energy, avg_enstrophy, alpha, energy, enstrophy, step);
if(K1>=1 && K2>=2){
printf("% .15e % .15e % .15e % .15e % .15e % .15e % .15e % .15e % .15e % .15e\n",time, avg_a, avg_energy, avg_enstrophy, alpha, energy, enstrophy, step, __real__ u[klookup_sym(1,1,K2)], __real__ u[klookup_sym(1,2,K2)]);
}else{
printf("% .15e % .15e % .15e % .15e % .15e % .15e % .15e % .15e\n",time, avg_a, avg_energy, avg_enstrophy, alpha, energy, enstrophy, step);
}
} else {
fprintf(stderr,"% .8e % .8e % .8e % .8e % .8e % .8e % .8e\n",time, avg_a, avg_energy, avg_enstrophy, alpha, energy, enstrophy);
printf("% .15e % .15e % .15e % .15e % .15e % .15e % .15e\n",time, avg_a, avg_energy, avg_enstrophy, alpha, energy, enstrophy);
if(K1>=1 && K2>=2){
printf("% .15e % .15e % .15e % .15e % .15e % .15e % .15e % .15e % .15e\n",time, avg_a, avg_energy, avg_enstrophy, alpha, energy, enstrophy, __real__ u[klookup_sym(1,1,K2)], __real__ u[klookup_sym(1,2,K2)]);
}else{
printf("% .15e % .15e % .15e % .15e % .15e % .15e % .15e\n",time, avg_a, avg_energy, avg_enstrophy, alpha, energy, enstrophy);
}
}
// reset averages