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Perforated Forced Convection Peculiarities and Implications

Vinayak Malhotra, Shourya Mahendra Singh, Koshika Pandey, Tanooj j


Transfer of heat through perforated forced convection within a confined passage on a flat plate is investigated for varying flow speeds. Experimentation relates to the need of comprehensive understanding of complicated heat transference requirement particularly in space propulsion domain. The optimal utilization of perforated enclosures with distinct shapes and sizes is predicted for wide-ranging applications. Systematic experimentation is carried out and effect of controlling parameters is explored. Results indicate that the perforation enclosure(s) primarily results in heat conservation effect which varies with the flow speed. Size of perforation and surface orientation significantly affects the heat transfer phenomenon as for small size perforation, the heat conservation effect is maximum for high speed flow at 90° however, for large size perforation, the maximum heat conservation effect occurs for intermediate flow at 45°. Smoother surfaces will be useful in effective heat conservation with the use of varying perforation heat sinks.

Keywords: Forced convection, Heat transfer coefficient, perforated enclosures, Surface orientation, Space propulsion, Variable flow.

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