An experimental study of the lubrication theory for highly compressible porous media, with and without lateral leakage

Zenghao Zhu; Rungun Nathan; Qianhong Wu

doi:10.1016/j.triboint.2018.06.016

An experimental study of the lubrication theory for highly compressible porous media, with and without lateral leakage

Zenghao Zhu, Rungun Nathan, Qianhong Wu

Division of Engineering, Business & Computing (Berks)

Research output: Contribution to journal › Article

4 Scopus citations

Abstract

In this paper, we report a comprehensive, experimental study to examine the lubrication theory for highly compressible porous media. It is inspired by the frictionless motion of red cells in a tightly fitting capillary and a human skiing/snowboarding. A novel experimental setup was developed where lubrication pressure generated in a soft porous layer was measured as planar board glides over it. Both laterally confined (1-D) and unconfined (2-D) situations were examined. The results excellently agree with the theory by Feng & Weinbaum (J. Fluid Mech. 422 (2000), pp. 281–317) and Wu & Sun (Med. Sci. Sports Exerc. 43 (2011), pp. 1955–1963). The paper demonstrates the significant potential of applying soft porous media in lubrication with tremendously enhanced hydrodynamic lift.

Original language	English (US)
Pages (from-to)	324-332
Number of pages	9
Journal	Tribology International
Volume	127
DOIs	https://doi.org/10.1016/j.triboint.2018.06.016
State	Published - Nov 2018

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1016/j.triboint.2018.06.016

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Zhu, Z., Nathan, R., & Wu, Q. (2018). An experimental study of the lubrication theory for highly compressible porous media, with and without lateral leakage. Tribology International, 127, 324-332. https://doi.org/10.1016/j.triboint.2018.06.016

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