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October 7, 2025Physics of Fluids

Transient convective heat transfer in a porous circular cylinder

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Authors

ZCZepeng ChenYLYingzheng LiuHSHyung Jin Sung

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Overview

This analysis reveals the influence of permeability and flow properties on heat transfer in a porous cylinder, indicating enhanced cooling efficiency.

Key Points

  • An increase in Darcy number leads to a near doubling of the time-averaged Nusselt number (Nu), resulting in faster thermal response.
  • The study identifies four distinct wake modes related to varying permeability and flow conditions, impacting convective cooling efficiency.
  • Empirical correlation quantifies how inertia and thermal diffusivity dominate heat transfer while modifying the thermal boundary layer.
  • Insights from this work can improve the design of porous-media heat exchangers for better thermal management in engineering applications.

Cite This Study

Chen et al. (2025) studied this question.

synapsesocial.com/papers/68e585d0b1e78cc4e5f46720https://doi.org/10.1063/5.0293537
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