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Title: Thermo-mixed hydrodynamics of piston compression ring conjunction
Authors: Shahmohamadi, Hamed
Rahmani, Ramin
Rahnejat, Homer
Garner, Colin P.
King, P.D.
Keywords: Piston Ring conjunction
Mixed mode friction
Navier-Stokes equations
Raleigh-Plesset volume fraction
Issue Date: 2013
Citation: SHAHMOHAMADI, H. ... et al, 2013. Thermo-mixed hydrodynamics of piston compression ring conjunction. Tribology Letters, 51 (3), pp.323-340.
Abstract: A new method, comprising Navier-Stokes equations, Rayleigh-Plesset volume fraction equation, an analytical control-volume thermal mixed approach and asperity interactions is reported. The method is employed for prediction of lubricant flow and assessment of friction in the compression ring-cylinder liner conjunction. The results are compared with Reynolds-based laminar flow with Elrod cavitation algorithm. Good conformance is observed for medium load intensity part of the engine cycle. At lighter loads and higher sliding velocity, the new method shows more complex fluid flow, possessing layered flow characteristics on account of pressure and temperature gradient into the depth of the lubricant film, which leads to a cavitation region with vapour content at varied volume fractions. Predictions also conform well to experimental measurements reported by other authors.
Description: The final publication is available at http://link.springer.com.
Version: Accepted for publication
DOI: 10.1007/s11249-013-0163-5
URI: https://dspace.lboro.ac.uk/2134/12900
Publisher Link: http://dx.doi.org/10.1007/s11249-013-0163-5
ISSN: 1023-8883
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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