Proceedings ArticleDOI
Bypass effect in high performance heat sinks
Suzana Prstic,Madhusudan K. Iyengar,Avram Bar-Cohen +2 more
- pp 255-262
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TLDR
In this article, the effects of fin density, inlet duct velocity, and clearance area ratio, on the extent of flow bypass and its impact on the thermal performance of the heat sink were investigated.Abstract:
Studies using commercial computational fluid dynamics software, running on a supercomputer, were carried out to investigate the effects of fin density, inlet duct velocity, and clearance area ratio, on the extent of flowbypass and its impact on the thermal performance of the heat sink. Flow bypass was found to increase with increasing fin density and clearance, while remaining relatively insensitive to inlet duct velocity. An optimum geometry, for a fixed inlet duct velocity, bypass clearance, fixed heat sink volume, and constant thickness, was determined.read more
Citations
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Journal ArticleDOI
Cooling performance of micro-texture at the tool flank face under high pressure jet coolant assistance
Zhenglong Fang,Toshiyuki Obikawa +1 more
TL;DR: In this paper, five types of micro-texture were fabricated at the tool face to improve the cooling performance under the condition of high pressure jet coolant assistance, and the conditions of tool wear, adhesion and chip formation were compared between the micro-textured and non-patterned tools in the longitudinal turning of the nickel based superalloy Inconel 718.
Journal ArticleDOI
Effect of flow bypass on the performance of a shrouded longitudinal fin array
TL;DR: In this article, the authors investigated the effects of fin density and tip-to-shroud clearance on the flow bypass and its impact on the pressure drop across a longitudinal aluminum fin array and its thermal performance.
Journal ArticleDOI
Modeling and fabricating a prototype of a thermoelectric generator system of heat energy recovery from hot exhaust gases and evaluating the effects of important system parameters
TL;DR: In this article, the authors deal with the general modeling of a thermoelectric generator system, including the modeling of the cooling system for the cold side of the generator, system of heat transfer from the smokestack to the hot side, and also the modelling of the thermistors themselves.
Journal ArticleDOI
Experimental and numerical investigations of heat transfer and flow characteristics of cross-cut heat sinks
TL;DR: In this article, the authors investigated the thermal transfer and flow characteristics of plate-fin and cross-cut heat sinks and found that the thermal resistance of a crosscut heat sink with Lc = 1.5mm and Nc = 6 is 16.2% lower than that of a plate- fin heat sink at the same pumping power.
Journal ArticleDOI
“Heat Shield”—An Enhancement Device for an Unshrouded, Forced Convection Heat Sink
Suzana Prstic,Avram Bar-Cohen +1 more
TL;DR: In this paper, a thin sheet-metal heat shield is placed around a partially shrouded heat sink to channel the flow directly into the heat sink, which can substantially enhance heat sink thermal performance, in a channel geometry and airflow range typical of commercial chip packages.
References
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Journal ArticleDOI
Forced Convection Heat Transfer from a Shrouded Fin Array with and without Tip Clearance
Journal ArticleDOI
Effect of Flow Bypass on the Performance of Longitudinal Fin Heat Sinks
Journal ArticleDOI
Effect of tip-to-shroud clearance on turbulent heat transfer from a shrouded, longitudinal fin array
E. M. Sparrow,D. S. Kadle +1 more
Proceedings ArticleDOI
Cooling performance of plate fins for multichip modules
TL;DR: In this paper, the authors evaluate the air cooling characteristics of plate fins for MCMs (multichip modules) with and without some spanwise space around the plate fins, and propose empirical equations for the Nusselt number and friction factor based on the numerical results.
Journal ArticleDOI
Handbook of single-phase convective heat transfer
TL;DR: The Handbook of Single Phase Conditional Heat Transfer (HANDBOT) as mentioned in this paper is a handbook of single phase CONVECTIVE HEAT TRANSFER, 1989.