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Leaky and Albedo Boundary Conditions Implementation (#2724)

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Co-authored-by: Paul Romano <paul.k.romano@gmail.com>
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Yuvraj Jain 2023-10-30 20:51:31 +00:00 • committed by GitHub
parent 2c1e304892
commit 693314d097
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15 changed files with 376 additions and 82 deletions
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39
include/openmc/boundary_condition.h
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@ -1,7 +1,10 @@
#ifndef OPENMC_BOUNDARY_CONDITION_H
#define OPENMC_BOUNDARY_CONDITION_H
#include "openmc/hdf5_interface.h"
#include "openmc/particle.h"
#include "openmc/position.h"
#include <fmt/core.h>
namespace openmc {
@ -22,8 +25,44 @@ public:
//! \param surf The specific surface on the boundary the particle struck.
virtual void handle_particle(Particle& p, const Surface& surf) const = 0;
//! Modify the incident particle's weight according to the boundary's albedo.
//! \param p The particle that struck the boundary. This function calculates
//! the reduction in the incident particle's weight as it interacts
//! with a boundary. The lost weight is tallied before the remaining weight
//! is reassigned to the incident particle. Implementations of the
//! handle_particle function typically call this method in its body.
//! \param surf The specific surface on the boundary the particle struck.
void handle_albedo(Particle& p, const Surface& surf) const
{
if (!has_albedo())
return;
double initial_wgt = p.wgt();
// Treat the lost weight fraction as leakage, similar to VacuumBC.
// This ensures the lost weight is tallied properly.
p.wgt() *= (1.0 - albedo_);
p.cross_vacuum_bc(surf);
p.wgt() = initial_wgt * albedo_;
};
//! Return a string classification of this BC.
virtual std::string type() const = 0;
//! Write albedo data of this BC to hdf5.
void to_hdf5(hid_t surf_group) const
{
if (has_albedo()) {
write_string(surf_group, "albedo", fmt::format("{}", albedo_), false);
}
};
//! Set albedo of this BC.
void set_albedo(double albedo) { albedo_ = albedo; }
//! Return if this BC has an albedo.
bool has_albedo() const { return (albedo_ > 0.0); }
private:
double albedo_ = -1.0;
};
//==============================================================================

8
include/openmc/surface.h
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@ -83,10 +83,10 @@ struct BoundingBox {
class Surface {
public:
int id_; //!< Unique ID
std::string name_; //!< User-defined name
std::shared_ptr<BoundaryCondition> bc_ {nullptr}; //!< Boundary condition
GeometryType geom_type_; //!< Geometry type indicator (CSG or DAGMC)
int id_; //!< Unique ID
std::string name_; //!< User-defined name
unique_ptr<BoundaryCondition> bc_; //!< Boundary condition
GeometryType geom_type_; //!< Geometry type indicator (CSG or DAGMC)
bool surf_source_ {false}; //!< Activate source banking for the surface?
explicit Surface(pugi::xml_node surf_node);