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Direct simulation of effusion and expansion flows from a slit into a vacuum
https://doi.org/10.18999/memfenu.43.1.135
https://doi.org/10.18999/memfenu.43.1.1353215d34d-fb45-4f6f-af0c-2af1156ce244
名前 / ファイル | ライセンス | アクション |
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43-1-05.pdf (1.0 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2020-10-29 | |||||
タイトル | ||||||
タイトル | Direct simulation of effusion and expansion flows from a slit into a vacuum | |||||
言語 | en | |||||
著者 |
Soga, Takeo
× Soga, Takeo× Kim, Byung Gon× Suda, Hideo |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
抄録 | ||||||
内容記述 | Effusion flows from a two-dimensional porous surface and expansion flows from a sonic slit were studied based upon the DSMC method. Present simulation was carried out under the suspicion that thermal motion of gas molecules would partially change into back flow in effusion flow. Effusion flow was accelerated to a supersonic expansion flow but the virtual stagnation pressure of this expansion flow was much lower than the pressure at the surface. Features of effusion flow with back flow were revealed. No substantial back flow was seen even in the effusion flow from a porous surface. The back flow seemed to be separated from the main flow of the effusion and effects of the back flow were very restricted. Several cell sizes were employed in the simulation of expansion flow. It was found that cell size should be finer than (slit hight/60)[Χ](slit hight/60) so that we might obtain accurate density contour. Value of the parameter p[0]d used in the simulation was about 24torr-mm, which was comparable with the conventional experimental conditions. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | Faculty of Engineering, Nagoya University | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ID登録 | ||||||
ID登録 | 10.18999/memfenu.43.1.135 | |||||
ID登録タイプ | JaLC | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0027-7657 | |||||
書誌情報 |
en : Memoirs of the Faculty of Engineering, Nagoya University 巻 43, 号 1, p. 135-146, 発行日 1991-10-31 |
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著者版フラグ | ||||||
値 | publisher |