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A contribution to film coefficient estimation in piston cooling galleries
Experimental Thermal and Fluid Science, 2010The need to reduce fuel consumption and exhaust emissions in internal combustion engines has been drastically increased during last years. One of the most important processes affecting these parameters is heat transfer from the in-cylinder gas to the surrounding walls, as this mechanism has a direct influence on the combustion process.
A.J. Torregrosa +3 more
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EXPLORATION OF OIL FLOW AND HEAT TRANSFER PHENOMENON FOR GALLERY-COOLED DIESEL ENGINE PISTONS
SAE Technical Paper Series, 2023<title>ABSTRACT</title> <p>This paper details the exploration of oil jet piston cooling phenomenon with a focus on heat transfer from the diesel engine piston to the oil. Several numerical methods based on computational fluid dynamics (CFD) and conjugate heat
Arkady Grunin, Vamshi Korivi
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Whispering gallery mode HgCdTe laser operating near 4 μm under Peltier cooling
Applied Physics Letters, 2023Due to their widely tunable bandgap, HgCdTe heterostructures with quantum wells are a promising material system for semiconductor lasers in the entire mid-infrared range. Recently, Auger-suppressed structures allowed interband stimulated emission (SE) in
A. Razova +12 more
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International Journal of Engine Research
As engines progressively move toward higher reinforcement, piston reliability faces significant challenges. In this context, the piston cooling gallery (PCG) has gradually become a key technology for highly reinforced pistons. To more accurately simulate
Guisheng Chen +6 more
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As engines progressively move toward higher reinforcement, piston reliability faces significant challenges. In this context, the piston cooling gallery (PCG) has gradually become a key technology for highly reinforced pistons. To more accurately simulate
Guisheng Chen +6 more
semanticscholar +1 more source
Computational modelling of convective heat transfer in a simulated engine cooling gallery
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2007Experimental data from internal combustion (IC) engines suggests that the use of proprietary computational fluid dynamics (CFD) codes for the prediction of coolant-side heat transfer within IC engine coolant jackets often results in underprediction of the convective heat transfer coefficient.
K Robinson +3 more
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Multi-objective optimization of cooling galleries inside pistons of a diesel engine
Applied Thermal Engineering, 2018Abstract In order to solve a trade-off problem between temperature and thermal stress of pistons for cross section design of a cooling gallery, a multi-objective optimization and a co-simulation workflow are carried out to calculate an optimal design and thermal solutions inside the piston’s thermal system of a diesel engine.
Xiwen Deng +4 more
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CFD Modeling of the Multiphase Flow and Heat Transfer for Piston Gallery Cooling System
SAE Technical Paper Series, 2007<div class="htmlview paragraph">Numerical models are used in this study to investigate the oil flow and heat transfer in the piston gallery of a diesel engine. An experiment is set up to validate the numerical models. In the experiment a fixed, but adjustable steel plate is instrumented and pre-heated to a certain temperature. The oil is injected
Yong Yi +6 more
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3-D Modeling of Heat Transfer in Diesel Engine Piston Cooling Galleries
SAE Technical Paper Series, 2005<div class="htmlview paragraph">Ever increasing specific power of diesel engines has put huge demand on effective thermal management of the pistons for the desired reliability and durability. The piston temperature control is commonly achieved by injecting cooling oil into piston galleries, but the design of the cooling system as well as the ...
Jinfeng Pan +2 more
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