平成27年度第2回講演会(日本航空宇宙学会関西支部分科会)
日時: | 平成27年4月24日(金) 16:30-17:30 |
場所: | 京都大学 桂キャンパスCクラスタ総合研究棟III(C3棟) 3階 b3n03室(航空宇宙工学専攻会議室) |
講演: | From Vlasov-Poisson to Euler for trapped particles |
Prof. Julien Barre (Laboratoire J. A. Dieudonné, Université de Nice-Sophia Antipolis, France) |
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要旨: | Motivated by experimental studies on clouds of cold atoms, we investigate the strong interaction limit (a.k.a. “quasi neutral” limit) for a Vlasov-Poisson-Fokker-Planck equation in an external potential. We show that under certain conditions, the dynamics reduces to an incompressible fluid equation: Euler or the lake equation, depending on the external potential. We will illustrate this convergence by some direct numerical simulations of the particles system. |