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Fix 1D flow perturbation applying random factor twice (index aliasing) #1397

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Fix 1D flow perturbation applying random factor twice (index aliasing) #1397

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7 changes: 4 additions & 3 deletions src/pre_process/m_perturbation.fpp
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,7 @@ contains

type(scalar_field), dimension(sys_size), intent(inout) :: q_prim_vf
integer :: i, j, k
real(wp) :: rand_real
real(wp) :: rand_real, v_beg

call random_seed()

Expand All @@ -72,8 +72,9 @@ contains
do i = 0, m
call random_number(rand_real)
rand_real = rand_real*perturb_flow_mag
q_prim_vf(eqn_idx%mom%end)%sf(i, j, k) = rand_real*q_prim_vf(eqn_idx%mom%beg)%sf(i, j, k)
q_prim_vf(eqn_idx%mom%beg)%sf(i, j, k) = (1._wp + rand_real)*q_prim_vf(eqn_idx%mom%beg)%sf(i, j, k)
v_beg = q_prim_vf(eqn_idx%mom%beg)%sf(i, j, k)
q_prim_vf(eqn_idx%mom%beg)%sf(i, j, k) = (1._wp + rand_real)*v_beg
if (num_vels > 1) q_prim_vf(eqn_idx%mom%end)%sf(i, j, k) = rand_real*v_beg
if (bubbles_euler) then
q_prim_vf(eqn_idx%alf)%sf(i, j, k) = (1._wp + rand_real)*q_prim_vf(eqn_idx%alf)%sf(i, j, k)
end if
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