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Aerodynamics and Fluid Mechanics Commons™
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Full-Text Articles in Aerodynamics and Fluid Mechanics
Investigation Of Low Reynolds Number Flow And Heat Transfer Of Louvered Surfaces, Pradeep R. Shinde
Investigation Of Low Reynolds Number Flow And Heat Transfer Of Louvered Surfaces, Pradeep R. Shinde
FIU Electronic Theses and Dissertations
This study focuses on the investigation of flow behavior at low Reynolds numbers by the experimental and numerical performance testing of micro-channel heat exchangers. An experimental study of the heat transfers and pressure drop of compact heat exchangers with louvered fins and flat tubes was conducted within a low air-side Reynolds number range of 20 < ReLp < 225. Using an existing low-speed wind tunnel, 26 sample heat exchangers of corrugated louver fin type, were tested. New correlations for Colburn j and Fanning friction f factor have been developed in terms of non-dimensional parameters. Within the investigated parameter ranges, it seems that both the j and f factors are better represented by two correlations in two flow regimes (one for ReLp = 20 – 80 and one for ReLp = 80 – 200) than a single regime correlation in the power-law format. The results support the conclusion that airflow and heat transfer at very low Reynolds numbers behaves differently from that …
Multi-Objective Analysis And Optimization Of Integrated Cooling In Micro-Electronics With Hot Spots, Sohail R. Reddy
Multi-Objective Analysis And Optimization Of Integrated Cooling In Micro-Electronics With Hot Spots, Sohail R. Reddy
FIU Electronic Theses and Dissertations
With the demand of computing power from electronic chips on a constant rise, innovative methods are needed for effective and efficient thermal management. Forced convection cooling through an array of micro pin-fins acts not only as a heat sink, but also allows for the electrical interconnection between stacked layers of integrated circuits. This work performs a multi-objective optimization of three shapes of pin-fins to maximize the efficiency of this cooling system. An inverse design approach that allows for the design of cooling configurations without prior knowledge of thermal mapping was proposed and validated. The optimization study showed that pin-fin configurations …