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Heat Transfer Research
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ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018026507
pages 417-434

OSCILLATING HEAT TRANSFER PERFORMANCE OF DIFFERENTLY SHAPED COOLING GALLERIES IN AN ENGINE PISTON

Qinggang Liu
School of Mechanical Engineering, Hebei University of Science and Technology, 050018, Shijiazhuang, China
Hairong Zhu
School of Mechanical Engineering, Hebei University of Science and Technology, 050018, Shijiazhuang, China
Xinqi Yu
School of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang, China
Zewei Geng
School of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang, China

RÉSUMÉ

Oscillating heat transfer performances of piston cooling galleries with circle, oval, and water drop-shaped cross sections are investigated by using a numerical simulation method. The results show that the heat transfer performance of the water drop-shaped cooling gallery is the best. The surface heat transfer performance of the water drop-shaped cooling gallery increases with increase of the crankshaft speed and the stroke of the engine piston. The optional cooling oil volume fraction is 20–50%. The crankshaft speed is proved to be the primary factor that impacts the heat transfer performance.


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