SPH法の拡張とその応用(環境・地球・宇宙 宇宙・惑星(2),一般講演)

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概要

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• Recent attenmpts to extend SPH, the particle rezoning method (PRM) and Boltzmann particle hydrodynamics (BSPH) are further developed. BSPH is combined with Riemann solver to have stronger stability than the original GSPH with longer timestep. Further attempt to decrease numerical shear viscosity in higher-order Godunov BSPH is described. Result of test calculation shows that new scheme has the lowest numerical viscosity in SPHs with keeping shock capturing ability so far. As astrophysical applications, 2D accretion flow onto the proto-binary stars and 3D collapse and fragmentation of rotating dense molecular cloud cores are presented.

• 2009-09-02

著者

• 釣部 通

  大阪大

関連論文

• SPH法の拡張とその応用(環境・地球・宇宙 宇宙・惑星(2),一般講演)
• Boltzmann Smoothed Particle Hydrodynamics
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• 低温低粘性シアー流の粒子法による流体計算法(宇宙流体(2),一般講演)

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