Results 191 to 200 of about 484,366 (250)
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Impingement Cooling of Electronics
Journal of Heat Transfer, 1992Experiments were conducted to determine the performance of a system of low-velocity air jets used to cool a simulated electronics package. The test model consisted of a uniform array of rectangular elements mounted to a circuit board. Each element was cooled by a cluster of four jets, and the spent fluid was vented at one end of the channel formed ...
B. R. Hollworth, M. Durbin
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Micro-Electro-Mechanical Systems (MEMS), 2000
Abstract This paper presents an experimental investigation on MEMS impinging jets as applied to micro heat exchangers. We have fabricated MEMS single and array jet nozzles using DRIE technology, as well as a MEMS quartz chip providing a simulated hot surface for jet impingement.
Qiao Lin +4 more
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Abstract This paper presents an experimental investigation on MEMS impinging jets as applied to micro heat exchangers. We have fabricated MEMS single and array jet nozzles using DRIE technology, as well as a MEMS quartz chip providing a simulated hot surface for jet impingement.
Qiao Lin +4 more
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Microscale Liquid Impingement Cooling
Micro-Electro-Mechanical Systems (MEMS), 2001Abstract Impingement cooling is an attractive method for individual IC cooling because of the uniformity and high values of the expected heat transfer coefficient. This paper presents spatially-averaged temperature measurements for DI water impingement from single micro jets with diameters smaller than 50 μm.
Lian Zhang +8 more
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Multiple jet impingement cooling
Journal of Thermophysics and Heat Transfer, 1993Experiments were performed to study the effect of nozzle rotation, flow rate, degrees of subcooling, number of jets, and velocity on the heat flux in jet impingement cooling using deionized distilled water. The heat flux is a strong function of the flow rate and degree of subcooling, attaining a maximum value of the order of 600 W/cm at the highest ...
M. R. Pais, L. C. Chow, E. T. Mahefkey
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Cooling performance of an impingement cooling device combined with pins
Journal of Thermal Science, 2005Experimental study and one dimensional model analysis were conducted to investigate cooling performance of an integrated impingement and pin fin cooling device. A typical configuration specimen was made and tested in a large scale low speed closed-looped wind tunnel.
Dongliang Quan +3 more
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Mist/Steam Cooling by a Row of Impinging Jets
Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, 2001Closed loop steam has been chosen for cooling airfoils in heavy frame Advanced Turbine Systems (ATS) to improve efficiency. Enhanced cooling by the use of mist is considered to have potential to augment cooling by internal steam alone. Water droplets generally less than 10μm are added to 1.3 bar steam and injected through a row of four discrete round ...
X Li, J.L Gaddis, T Wang
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Optimal design of impinging jets in an impingement/effusion cooling system
Energy, 2014Abstract To design an impingement/effusion cooling system that realizes the lowest thermal stress in an impingement/effusion cooling system, we conducted thermal analysis and optimization using a second-order response surface method. The optimal impinging jet system was based on four design variables: the spacing between the impinging jets and ...
Kyung Min Kim +3 more
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Impinging jet cooling on concave surfaces
AIChE Journal, 2004AbstractThe numerical modeling of jet impingement cooling onto a semicircular concave surface is reported. The performance of two‐equation turbulence models (such as the k–ε model) is evaluated vs. the Reynolds stress model proposed. The Reynolds‐averaged momentum and energy equations are solved together with equations for the turbulence models, using ...
N. Souris, H. Liakos, M. Founti
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Numerical Simulation of Impinging Jet Cooling
2010 14th International Heat Transfer Conference, Volume 5, 2010This paper presents a technique for heat transfer prediction of impinging jet cooling of internal combustion engine piston based on numerical simulation in ANSYS CFX. This technique implies the simulation of the hydrodynamics of the interaction between cooling oil jet and moving piston.
Yury V. Mikhaylov +2 more
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Air Impingement Cooling by Synthetic Jet
Journal of Thermal Science and Engineering Applications, 2014Modern consumer electronic trends point to a demand for thinner and more portable electronic devices. Conventional cooling systems of these portable electronic devices are challenging to miniaturize in thin profile applications that are typically on the order of several millimeters in thickness.
Ahmad Jalilvand +5 more
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