| 共催： |
- ２１世紀ＣＯＥプログラム「動的機能機械システムの数理モデルと設計論」
- 日本航空宇宙学会関西支部「流体力学における微視的アプローチ」研究分科会
|
| 日時： |
2004年03月19日（金） 11：00〜12:30 |
| 場所： |
京都大学 工学研究科航空宇宙工学専攻（工学部11号館） 2階会議室（219号室） |
| 講演者： |
Prof. Aldo Frezzotti (Dipartimento di Matematica, Politecnico di Milano (Milano, Italy)) |
| 講演題目： |
Boundary conditions at the vapor-liquid interface |
| 講演要旨： |
The traditional kinetic theory treatment of boundary conditions at the interface separating a liquid from its vapor phase has recently been questioned in a few investigations based on molecular dynamics simulations. In particular, deviations from a Maxwellian distribution function have been found for evaporated and reflected molecules, even in equilibrium conditions. In order to achieve a better understanding of molecular exchanges between the condensed and the vapor phases, an Enskog-Vlasov kinetic equation is formulated to describe both the liquid and vapor. The distribution functions of evaporated and reflected molecules are reconstructed from DSMC simulations of the linear and non-linear version of the kinetic equation. The possibility of a hydrodynamic treatment of the problem by a 13-moment approximation of the Enskog-Vlasov equation is also presented and discussed. |
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