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Second Thermal and Fluids Engineering  Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

NUMERICAL SIMULATION OF UPWARD FACING OIL-JET COOLING ON A FLAT PLATE

Bolong Ma
Oakland University, 2200 N Squirrel Rd, Rochester, MI 48309, USA

Morgan R. Jones
Trinity University, One Trinity Pl, San Antonio, TX 78212, USA

Aaron S. Demers
University of Wisconsin Whitewater, 800 W Main St, Whitewater, WI 53190, USA

Laila Guessous
Oakland University, Rochester, MI 48309, USA

Brian P. Sangeorzan
Oakland University, 2200 N Squirrel Rd, Rochester, MI 48309, USA

Abstract

Long used on heavy duty and high performance engines, oil jets are increasingly being used to cool the undersides of pistons in passenger vehicle engines due to the increased thermal loads on such engines. The effectiveness of such cooling depends on many parameters, including the oil jet flow rate, the oil fluid properties and the distance between the nozzle and the surface. In particular, knowing the jet impingement area is important for heat transfer calculations, yet very few studies have focused on upward liquid or oil-jet flows. This ongoing study aims to improve our understanding of the fundamental flow characteristics of upward oil jets. Using a finite volume-based computational fluid dynamics (CFD) solver, transient two-phase 3D flow simulations of an upward facing oil jet impinging on a flat surface were performed for several oil flow rate and oil temperature values. The multiphase volume of fluid (VOF) and k-omega turbulence models were used in this investigation. This paper reports the results for the jet impingement area under different flow conditions, and presents results of the analysis of the downward falling stream columns. The computational results of the oil jet simulations are compared to experimental measurements.

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