Flow in a liquid sphere moving with a hypersonic velocity in a rarefied gas - An analytic solution of linearized equations
Flow in a liquid sphere moving with a hypersonic velocity in a rarefied gas - An analytic solution of linearized equations
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稀薄气体中以高超音速运动的液球中的流动 - 线性方程的解析解
DOI：
10.1143/ptp.109.717
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发表时间：
2003
影响因子：
--
通讯作者：
T. Nakamoto
中科院分区：
文献类型：
--
作者：
M. Sekiya;M. Uesugi;T. Nakamoto
本文用解析方法得到了高超声速稀薄气体中液体球的流动。稀薄气体的流动近似为自由分子流。我们假设流体动力学方程的非线性项以及表面变形足够小，可以采用线性化方程。结果表明，由于气体分子在球表面的切向动量通量，形成了一个旋涡。这个解决方案与描述陨石中宇宙球粒和球粒形成的模型有关，其中固体尘埃颗粒由于气体摩擦加热而熔化。
The flow in a liquid sphere moving in a rarefied gas with a hypersonic velocity is obtained analytically. The flow in the rarefied gas is approximated as free molecule flow. We assume that the non-linear terms of the hydrodynamical equations as well as the surface deformation are sufficiently small to employ linearized equations. The solution shows that an eddy is formed owing to the tangential momentum flux of gas molecules on the surface of the sphere. This solution is relevant to models describing the formation of cosmic spherules and chondrules in meteorites, where solid dust particles melt due to gas frictional heating.
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Yasuda S.;Nakamoto T
通讯作者：
Nakamoto T