Ian Jauslin
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Diffstat (limited to 'src/navier-stokes.h')
-rw-r--r--src/navier-stokes.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/navier-stokes.h b/src/navier-stokes.h
index da3894e..ff292cc 100644
--- a/src/navier-stokes.h
+++ b/src/navier-stokes.h
@@ -49,6 +49,8 @@ int ns_T_nofft( _Complex double* out, _Complex double* u, int K1, int K2, int N1
// compute alpha
double compute_alpha( _Complex double* u, int K1, int K2, int N1, int N2, _Complex double* g, double L, _Complex double* T);
+// do not include the term involving T, which, in the limit K->infty, vanishes
+double compute_alpha_fast( _Complex double* u, int K1, int K2, _Complex double* g, double L);
// compute energy
double compute_energy( _Complex double* u, int K1, int K2);
// compute enstrophy