Class BoundaryModel_NoginaSellan2026
Defined in File BoundaryModel_NoginaSellan2026.h
Inheritance Relationships
Base Type
public SPH::BoundaryModel_Koschier2017(Class BoundaryModel_Koschier2017)
Class Documentation
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class BoundaryModel_NoginaSellan2026 : public SPH::BoundaryModel_Koschier2017
The boundary model stores the information required for boundary handling using the tube maps of Nogina and Sellán 2026 [NS26].
A tube map is a density map in the sense of [KB17], i.e., it stores the signed distance to the boundary (field 0) and the boundary density (field 1) on a cubic Lagrange grid. In contrast to [KB17], the boundary density is not obtained by a numerical volume integral but by a closed-form 1D integral of the projected cubic spline kernel along the normal direction (optionally with a correction using the mean curvature (order 1) or the mean and Gaussian curvature (order 2) of the surface). The map is generated in SimulatorBase::initTubeMap().
Since tube maps are evaluated exactly like density maps, the model shares the interface of BoundaryModel_Koschier2017 and is handled by all pressure and non-pressure solvers in the same way (see Simulation::usesDensityMaps()).
References:
[KB17] Dan Koschier and Jan Bender. Density maps for improved SPH boundary handling. In ACM SIGGRAPH/Eurographics Symposium on Computer Animation, 1-10. July 2017. URL: http://dx.doi.org/10.1145/3099564.3099565
[NS26] Daria Nogina and Silvia Sellán. Tube Maps: Fast SPH Boundary Handling in Tubular Coordinates. In SIGGRAPH 2026 Conference Papers. 2026.