2011 Fiscal Year Final Research Report
Studies on rarefied gas flows via an accurate finite-difference analysis of the Boltzmann equation
| Project/Area Number |
21760129
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fluid engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
KOSUGE Shingo 京都大学, 大学院・工学研究科, 助教 (40335188)
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| Project Period (FY) |
2009 – 2011
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| Keywords | ボルツマン方程式 / 希薄気体力学 / 分子気体力学 / 気体分子運動論 / 自由分子気体 / イオ |
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| Research Abstract |
(1) Steady behavior of a free-molecular gas(a highly rarefied gas in which the molecular collisions can be neglected) between parallel plates with non-uniform temperature is analyzed to clarify the dependence of the flow field on the boundary condition. Moreover, a new example where no steady flow is induced is investigated.
(2) The behavior of Io's atmosphere is studied via a finite-difference analysis of a model Boltzmann equation. Unsteady flows caused by condensation and sublimation of sulfur dioxide(the main component of the atmosphere) during and after eclipse are obtained.
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