From c9e98bff1857510249a20efaa0c2f6de4c527b75 Mon Sep 17 00:00:00 2001
From: Florian Atteneder <florian.atteneder@uni-jena.de>
Date: Tue, 16 Jul 2024 17:21:28 +0200
Subject: [PATCH] teach spherical1d how deal with tov and bondi data
---
src/GRHD/rhs.jl | 38 +++++++++++++++++++++++++++++++-------
1 file changed, 31 insertions(+), 7 deletions(-)
diff --git a/src/GRHD/rhs.jl b/src/GRHD/rhs.jl
index 61f91d83..96c278bc 100644
--- a/src/GRHD/rhs.jl
+++ b/src/GRHD/rhs.jl
@@ -1278,17 +1278,24 @@ function rhs!(mesh::Mesh1d, P::Project{:spherical1d}, hrsc::Nothing)
broadcast_volume!(flux_source_spherical1d, equation, mesh)
impose_symmetry_sources!(P, mesh)
broadcast_faces!(llf_spherical1d, equation, mesh)
- if P.prms.problem === :bondi
- broadcast_bdry!(bdryllf_spherical1d_bondi, equation, mesh)
- elseif P.prms.problem === :tov
- if ismirrored(mesh)
+ id = P.prmsdb["GRHD"]["id"]
+ bc = P.prmsdb["GRHD"]["bc"]
+ if id == "bondi_accretion"
+ if bc == "from_id"
+ broadcast_bdry!(bdryllf_spherical1d_bondi, equation, mesh)
+ else
+ TODO("unknown boundary conditions for initial data $id: $bc")
+ end
+ elseif id == "tov"
+ if bc == "tov_symmetric_domain"
+ # nothing todo, atmosphering should take care of outer bdrys
+ elseif bc == "tov_reflective_origin"
broadcast_bdry!(bdryllf_spherical1d_tov, equation, mesh)
else
- impose_symmetry_bdry_values_spherical1d!(mesh)
- broadcast_bdry!(bdryllf_spherical1d_tov_reflected, equation, mesh)
+ TODO("unknown boundary conditions for initial data $id: $bc")
end
else
- TODO()
+ TODO("unknown boundary conditions for initial data $id: $bc")
end
if "D" ∉ P.prmsdb["GRHD"]["freeze_vars"]
@@ -1304,6 +1311,23 @@ function rhs!(mesh::Mesh1d, P::Project{:spherical1d}, hrsc::Nothing)
if !P.prmsdb["GRHD"]["atm_evolve"]
broadcast_volume!(determine_atmosphere, P.equation, mesh)
broadcast_volume!(stop_atmosphere_evolution_spherical1d, P.equation, mesh)
+
+ if bc == "tov_symmetric_domain"
+ # Need to symmetrize data around origin to avoid asymmetries to blow up there.
+ # This is needed, because near the surface the solution becomes asymmetric,
+ # and those errors are amplified when propagating inwards.
+ # Not sure if this is caused by the LDG/AV method or by the DG method itself.
+ korigin = find_cell_index(0.0, mesh)
+ for (k,(v_rhs_D, v_rhs_Sr, v_rhs_Ï„)) in enumerate(zip(eachcell(mesh,rhs_D),
+ eachcell(mesh,rhs_Sr),
+ eachcell(mesh,rhs_Ï„)))
+ if korigin == k
+ @views v_rhs_D .= (v_rhs_D .+ v_rhs_D[end:-1:1])./2
+ @views v_rhs_Sr .= (v_rhs_Sr .- v_rhs_Sr[end:-1:1])./2
+ @views v_rhs_Ï„ .= (v_rhs_Ï„ .+ v_rhs_Ï„[end:-1:1])./2
+ break
+ end
+ end
end
return
--
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