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Cylindrical smoothed particle hydrodynamics. (English) Zbl 0791.76066
Smoothed particle hydrodynamics (SPH) is formulated in two-dimensional axisymmetric coordinates. Starting with a three-dimensional Cartesian representation of SPH, we integrate out the angular component and find a two-dimensional cylindrical description. A smoothed “particle” in this formulation becomes a smoothed “torus”. The hoop stress, resulting from interactions within the toroidal ring, is a natural consequence of the derivation. The formulation has been extended to include the entire stress tensor, not just the pressure, and is therefore applicable to a wide range of materials and flow speeds.
MSC:
76M25Other numerical methods (fluid mechanics)
76N10Compressible fluids, general