Study of convective cooling of fin arrays using Schlieren imaging and CFD analysis

Chinmay Kane; Chidanand Koshti

doi:10.1117/12.3041265

11 October 2024 Study of convective cooling of fin arrays using Schlieren imaging and CFD analysis

Chinmay Kane, Chidanand Koshti

Proceedings Volume 13276, Second International Conference on Current Trends in Physics and Photonics (ICCTPP 2024); 132760E (2024) https://doi.org/10.1117/12.3041265
Event: 2nd International Conference on Current Trends in Physics and Photonics (ICCTPP 2024), 2024, Pune, India

Abstract

Electronic component cooling is achieved mainly through the provision of fin arrays as heat sinks located on the processing components. This paper aims to present a methodology to relate convection current characteristics obtained from Schlieren imaging with heat transfer characteristics for fin arrays. For this experiment, fin arrays were fabricated for various fin heights, fin spacings, fin widths and convection current footage for all these configurations was recorded. The velocity values obtained from the Schlieren footage was compared with computational fluid dynamics (CFD) simulations of the fin arrays and were found to be consistent. The plume velocity is related with parameters like surface temperature and average heat transfer rate. It is observed that increasing fin height (h) increases heat transfer rate and plume velocity, up to 12mm beyond which fin array choking causes a decrease. Varying the fin spacing (s) keeping fin width (t) constant yields an optimum output at 5 fins and this trend can also be explained by fin choking effects. Varying the number of fins, and fin width, with a constant spacing cause comparatively small changes in heat transfer rates and plume velocity, suggesting that fin spacing is more significant of a factor than fin thickness.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Chinmay Kane and Chidanand Koshti "Study of convective cooling of fin arrays using Schlieren imaging and CFD analysis", Proc. SPIE 13276, Second International Conference on Current Trends in Physics and Photonics (ICCTPP 2024), 132760E (11 October 2024); https://doi.org/10.1117/12.3041265

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KEYWORDS

Convection

Design

Imaging arrays

Simulations

Visualization

Velocity measurements

Image processing

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