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Huge reduction in pressure drop of water, glycerol/water mixture, and aqueous solution of polyethylene oxide in high speed flows through micro-orifices
http://hdl.handle.net/10191/31010
http://hdl.handle.net/10191/31010d166d480-aa7e-4c64-b547-c3bd0d7e2423
名前 / ファイル | ライセンス | アクション |
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21_052002.pdf (1.3 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2014-12-11 | |||||
タイトル | ||||||
タイトル | Huge reduction in pressure drop of water, glycerol/water mixture, and aqueous solution of polyethylene oxide in high speed flows through micro-orifices | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Huge reduction in pressure drop of water, glycerol/water mixture, and aqueous solution of polyethylene oxide in high speed flows through micro-orifices | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Hasegawa, Tomiichi
× Hasegawa, Tomiichi× Ushida, Akiomi× Narumi, Takatsune |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Microfluid mechanics is one of the most exciting research areas in modern fluid mechanics and fluid engineering because of its many potential industrial and biological applications. In the present study, pressure drops (PDs) were measured for water, a 50/50 glycerol/water mixture, and a 0.1% aqueous solution of polyethylene oxide (PEO) 8000 flowing at high velocities through various sizes of micro-orifice. It was found that the measured PD of water and the glycerol/water mixture agrees with the prediction of the Navier–Stokes equation for orifices 100 and 400μm in diameter, but it is lower for orifices less than 50μm in diameter. In particular, the measured maximum PD was almost two orders of magnitude lower than the prediction for the 10 and 5μm diameter orifices. The glycerol/water mixture, possessing a viscosity ten times higher than water, provided nearly the same PDs as water when the reduction was generated. The solution of PEO produced a lower PD than water and the glycerol/water mixture except for the 400μm diameter orifice. Several factors, including orifice shape, deformation of orifice foil, wall slip, transition, cavitation, and elasticity were considered but the evidence suggests that the reduction in PD may be caused by wall slip or the elasticity induced in a flow of high elongational rate. | |||||
書誌情報 |
Physics of Fluids en : Physics of Fluids 巻 21, p. 052002-1-052002-9, 発行日 2009-05 |
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出版者 | ||||||
出版者 | American Institute of Physics | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 10706631 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10986202 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1063/1.3129592 | |||||
権利 | ||||||
権利情報 | Copyright(C) 2009 American Institute of Physics | |||||
著者版フラグ | ||||||
値 | publisher |