Analysis of squeeze flow of fluids between solid and porous surfaces

Majhi, Akankshya and Pardhi, Tarun Kumar and Deshpande, Abhijit P (2015) Analysis of squeeze flow of fluids between solid and porous surfaces. International Journal of Multiphase Flow, 68 . pp. 93-99. ISSN 0301-9322

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Abstract

Squeeze flow of fluids between surfaces is important in rheology, material processing, lubrication and biomedical applications. The surfaces for squeezing can be solid and/or porous. In this work, the squeeze flow between a porous surface and a solid surface is examined with Newtonian model fluids and model fabrics used in composite processing. Given that the fluid is expected to impregnate the fabric, the permeability and the wettability of the fluid–fabric combination are of utmost importance. Constant velocity squeeze flow experiments were carried out with polyester and polyol resins, while glass fabrics with different sizings were used as the porous surfaces. To understand the variation of the normal force during squeeze flow, its scaling with squeeze gap is evaluated. The scaling is observed to vary from −3 to −1 for different squeeze flow experiments. Squeeze flow theories are used to examine the normal force variation for different fluid–fabric combinations. It is shown that a slip based squeeze flow model and a permeability based squeeze flow model can be used to understand the wettability and the permeability of a fabric with a specific fluid.

Item Type: Journal Article
Uncontrolled Keywords: Squeeze flow;Composite processing;Porous surface;Stefan equation;Hassager equation;Permeability
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Other, Materials Science Department, Other
Depositing User: Ms. Alphones Mary
Date Deposited: 17 Jan 2017 11:22
Last Modified: 17 Jan 2017 11:22
URI: http://nal-ir.nal.res.in/id/eprint/12507

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