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	Experimental study of water and air based permeabilities of washed and screened sands
	Lei, Shu-Ye
	2010-05-10 ; 2010-05-10
会议名称	Proceedings of the ASME Heat Transfer Division 2005, Vol 1 ; ASME International Mechanical Engineering Congress and Exposition ; Orlando, FL ; Web of Science
关键词	porous media permeability slip effect viscosity Thermodynamics Engineering, Mechanical
中文摘要	The permeability of narrow screened washed sands of granularity 100-450 mu m was measured experimentally using water and air to investigate the effect of slip on the gas based permeability. The experimental data show that the air based permeability of the unconsolidated particle media is not proportional to the square of the mean particle diameter and that slip significantly affects the air based permeability measurements for unconsolidated porous media. The velocity slip effect is significant even for Kn < 10(-3). Slip effects were not found in the water based permeability measurements with the same sand samples. All of the experimental data lay around the curve root k/d = 0.283 phi(2.67) within +/- 4.1%. However, the water based permeability was not below all of the air based permeability as expected. The air based permeability eliminated slip effects was about 59% lower than that water based one, much larger than possible measurement. The experimental results showed that the standard air viscosity value in the handbooks was not its actual, the actual air viscosity may be over twice of that in handbooks.
会议录出版者	AMER SOC MECHANICAL ENGINEERS ; NEW YORK ; THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19683]
专题	清华大学
推荐引用方式 GB/T 7714	Lei, Shu-Ye. Experimental study of water and air based permeabilities of washed and screened sands[C]. 见:Proceedings of the ASME Heat Transfer Division 2005, Vol 1, ASME International Mechanical Engineering Congress and Exposition, Orlando, FL, Web of Science.

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