Anomaly of excess pressure drops of the flow through very small orifices
作者:
Tomiichi Hasegawa,
Masaki Suganuma,
Hiroshi Watanabe,
期刊:
Physics of Fluids
(AIP Available online 1997)
卷期:
Volume 9,
issue 1
页码: 1-3
ISSN:1070-6631
年代: 1997
DOI:10.1063/1.869170
出版商: AIP
数据来源: AIP
摘要:
Excess pressure drops are measured for the flow through very small orifices whose diameter ranges from the order of 1 mm to 10 &mgr;m using water, silicon oils, and solutions of glycerin in water: For larger orifices it is almost the same as, but for smaller orifices several times higher than, that of the numerical analysis of Newtonian fluid. Water gives the highest among the liquids used. Velocities are also measured along the centerline of a small orifice and found inconsistent with the result of the numerical analysis. A different mechanism may be dominant in the flow through very small orifices. ©1997 American Institute of Physics.
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