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Remove code with alpha1/2 to fix failing tests #116

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Merged
patrickersing merged 3 commits into from
Oct 15, 2025
Merged

Remove code with alpha1/2 to fix failing tests #116

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29025cb
Remove code with `alpha1/2`
bennibolm Oct 9, 2025
212b7a5
Use `get_node_vars`
bennibolm Oct 10, 2025
9a5fa0e
Restrict compat bound of Trixi.jl
bennibolm Oct 13, 2025
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19 changes: 1 addition & 18 deletions src/solvers/subcell_limiters.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -33,21 +33,12 @@ function (limiter::Trixi.SubcellLimiterIDP)(u::AbstractArray{<:Any, 4},
semi)
end

# Calculate alpha1 and alpha2
@unpack alpha1, alpha2 = limiter.cache.subcell_limiter_coefficients
Trixi.@threaded for element in eachelement(dg, semi.cache)
for j in eachnode(dg), i in 2:nnodes(dg)
alpha1[i, j, element] = max(alpha[i - 1, j, element], alpha[i, j, element])
end
for j in 2:nnodes(dg), i in eachnode(dg)
alpha2[i, j, element] = max(alpha[i, j - 1, element], alpha[i, j, element])
end

# Modification for wet/dry elements.
# (Re-)set dummy variable for alpha_dry
indicator_wet = 1

for j in eachnode(dg), i in 1:nnodes(dg)
for j in eachnode(dg), i in eachnode(dg)
h = waterheight(u[:, i, j, element], equations)

# Set indicator to FV if water height is below the threshold
Expand All @@ -58,15 +49,7 @@ function (limiter::Trixi.SubcellLimiterIDP)(u::AbstractArray{<:Any, 4},

if indicator_wet == 0 # element is dry
alpha[:, :, element] .= one(eltype(alpha))
alpha1[:, :, element] .= one(eltype(alpha1))
alpha2[:, :, element] .= one(eltype(alpha2))
end

# Use pure DG for interface fluxes
alpha1[1, :, element] .= zero(eltype(alpha1))
alpha1[nnodes(dg) + 1, :, element] .= zero(eltype(alpha1))
alpha2[:, 1, element] .= zero(eltype(alpha2))
alpha2[:, nnodes(dg) + 1, element] .= zero(eltype(alpha2))
end
return nothing
end
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