SPH法による非圧縮粘性流体解析手法の研究(流体工学,流体機械)

概要

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Using SPH method a new formulaion is introduced for incompressible viscous flow analysis. The method uses SMAC algorithm well known in finite difference scheme to solve time integral of Lagrangian form Navier-Stokes equation which is expressed by particle systems. The results show more excellent incompressibility than earlier approaches of SPH (PSPH and WSPH) within Reynolds number of 1.0 to about 1000. For low Re number (Re below 1.0) the results show good accordance with theoretical values. Moreover the method successfully introduced stress tensors to the viscous term of Navier-Stokes equation instead of using artificial viscosity treatment used in earlier approaches, which enables to solve incompressible viscous flow phenomena more realistic and exactly. The large deformation of free surface flow (typically in wave problem) can be analyzed with sufficient smoothness and naturalness.
社団法人日本機械学会の論文
2004-08-25