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Forcing function bug correction.

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This commit is contained in:
Miikka Vaisala
2020-01-14 13:58:11 +08:00
parent ae0163b0e5
commit 185b33980f
3 changed files with 10 additions and 6 deletions
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2
acc/mhd_solver/stencil_kernel.ac
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@@ -607,7 +607,7 @@ forcing(int3 globalVertexIdx, Scalar dt)
Vector force = helical_forcing(magnitude, k_force, xx, ff_re, ff_im, phase); Vector force = helical_forcing(magnitude, k_force, xx, ff_re, ff_im, phase);
// Scaling N = magnitude*cs*sqrt(k*cs/dt) * dt // Scaling N = magnitude*cs*sqrt(k*cs/dt) * dt
const Scalar NN = cs * sqrt(AC_kaver * cs); const Scalar NN = cs * magnitude * sqrt(AC_kaver * cs);
// MV: Like in the Pencil Code. I don't understandf the logic here. // MV: Like in the Pencil Code. I don't understandf the logic here.
force.x = sqrt(dt) * NN * force.x; force.x = sqrt(dt) * NN * force.x;
force.y = sqrt(dt) * NN * force.y; force.y = sqrt(dt) * NN * force.y;

3
config/astaroth.conf
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@@ -48,7 +48,8 @@ AC_relhel = 0.0
AC_forcing_magnitude = 1e-5 AC_forcing_magnitude = 1e-5
AC_kmin = 0.8 AC_kmin = 0.8
AC_kmax = 1.2 AC_kmax = 1.2
// Switches forcing off and accretion on
AC_switch_accretion = 0
// Entropy // Entropy
AC_cp_sound = 1.0 AC_cp_sound = 1.0

11
src/standalone/model/host_forcing.cc
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@@ -171,11 +171,14 @@ helical_forcing_special_vector(AcReal3* ff_hel_re, AcReal3* ff_hel_im, const AcR
// k_cross_k_cross_e.z/denominator}; // k_cross_k_cross_e.z/denominator};
// See PC forcing.f90 forcing_hel_both() // See PC forcing.f90 forcing_hel_both()
*ff_hel_re = (AcReal3){kabs * k_cross_e.x / denominator, kabs * k_cross_e.y, *ff_hel_im = (AcReal3){kabs * k_cross_e.x / denominator,
kabs * k_cross_e.z}; kabs * k_cross_e.y / denominator,
kabs * k_cross_e.z / denominator};
*ff_hel_re = (AcReal3){relhel * k_cross_k_cross_e.x / denominator,
relhel * k_cross_k_cross_e.y / denominator,
relhel * k_cross_k_cross_e.z / denominator};
*ff_hel_im = (AcReal3){relhel * k_cross_k_cross_e.x / denominator, relhel * k_cross_k_cross_e.y,
relhel * k_cross_k_cross_e.z};
} }
// Tool for loading forcing vector information into the device memory // Tool for loading forcing vector information into the device memory