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feat(src): Enabled Vacuume Region Generation

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Stroid can now generate vacuume regions. These are confirming spheres marked with a seperate attribute that solver may then apply arbitrary mappings to. Further, the boundary of this region is also marked with a seperate boundary attrite allowing seperate boundary conditions to easily be applied.
This commit is contained in:
Emily Boudreaux
2026-03-20 12:57:47 -04:00
parent 475fce5fca
commit b24e0377f6
13 changed files with 214 additions and 53 deletions
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18
src/lib/topology/mapping.cpp
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@@ -32,20 +32,6 @@ namespace stroid::topology {
pos(2) *= (1.0 - config->flattening);
}
void ApplyKelvin(mfem::Vector &pos, const fourdst::config::Config<config::MeshConfig> &config) {
const double r = pos.Norml2();
if (r <= config->r_star) {
return;
}
double xi = (r - config->r_star) / (config->r_infinity - config->r_star);
xi = std::min(0.999, std::max(0.0, xi)); // Clamp xi to [0, 0.999]
const double r_new = config->r_star + xi / (1.0 - xi);
const double scale = r_new / r;
pos *= scale;
}
void TransformPoint(mfem::Vector &pos, const fourdst::config::Config<config::MeshConfig> &config, int attribute_id) {
double l_inf = 0.0;
for (int i = 0; i < pos.Size(); ++i) {
@@ -82,9 +68,6 @@ namespace stroid::topology {
ApplySpheroidal(pos, config);
return;
}
if (l_inf <= config->r_star) {
const double xi = (l_inf - config->r_core) / (config->r_star - config->r_core);
const double r_phys = config->r_core + xi * (config->r_star - config->r_core);
@@ -97,7 +80,6 @@ namespace stroid::topology {
pos = unit_dir;
pos *= l_inf;
ApplyKelvin(pos, config);
ApplySpheroidal(pos, config);
}
}