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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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Impingement cooling of gas turbine components
High Temperature Technology, 1984Impingement cooling heat transfer data were obtained for test geometries relevant to full coverage gas turbine combustion chamber wall cooling with the full flame tube pressure loss across the impi...
G.E. Andrews, C.I. Hussain
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Numerical Simulation of Turbulent Impingement Cooling
Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, 2001Simulations of turbulent impinging jet heat transfer for different nozzle configurations using Reynolds averaged governing equations and two-equation turbulence models have been conducted. The considered nozzle configurations are a square-edged orifice and a pipe exit.
Andreas Abdon, Bengt Sundén
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Converging Jet Impingement for Enhanced Liquid Cooling
Journal of Electronic Packaging, 2023Abstract Jet impingement cooling is an advanced thermal management technique for high heat flux applications. Standard configurations include single, axisymmetric jets with orifice, slot, or pipe nozzles. This choice in nozzle shape, number of jets, and jet inclination greatly influences the turbulence generated by fluid entrainment due ...
Reece Whitt +2 more
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Microjet Impingement Cooling With Phase Change
Heat Transfer, Volume 2, 2004The large heat generation rates in contemporary microprocessors require new thermal management solutions. Two-phase microjet impingement cooling promises high heat transfer coefficients and effective cooling of hotspots. We have fabricated integrated microjet structures with heaters and temperature sensors to study local heat transfer at the ...
Evelyn N. Wang +3 more
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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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Crossflow Minimization for Jet Impingement Cooling Applications
Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, 2023Abstract Jet impingement is used to efficiently cool gas turbine blades and other engine components. However, jet-to-jet interactions result in the accumulation of crossflow as the spent air migrates downstream, which usually causes a decay in the Nusselt number and reduces the overall cooling performance.
Abdel Rahman Salem +2 more
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Novel Jet Impingement Cooling Geometry for Combustor Liner Backside Cooling
Journal of Thermal Science and Engineering Applications, 2009Impinging jets are commonly used to enhance heat transfer in modern gas turbine engines. Impinging jets used in turbine blade cooling typically operate at lower Reynolds numbers in the range of 10,000–20,000. In combustor liner cooling, the Reynolds numbers of the jets can be as high as 60,000.
E. I. Esposito +3 more
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Cooling Efficiency Enhancement Using Impingement Cooling Technique for Turbine Blades
ASME 2013 Gas Turbine India Conference, 2013The effect of impingement cooling on the internal surface (cooling passage) of the leading edge region in a commercial turbine high pressure first stage rotor blade is investigated using Computational Fluid Dynamics (CFD) simulations. The flow domain is obtained by stretching the middle cross section (50% span) of the above mentioned blade.
Keerthivasan Rajamani +6 more
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Cooling of Electronic Systems by Impinging Air Jets
1994Thermal performance is one of the most important criterion in the material and process selection for microelectronic packages. Thermal management is driven by integrated circuit scaling. So, forced-air cooling is not only way to get the heat out of electronics. In this paper, cooling of electronic components by impinging air jets is introduced.
PULAT, ERHAN, CAN, M
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