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In this paper, we present the results of comprehensive 3D simulations aimed at investigating heat transfer characteristics in a cubical enclosure with an internal heat source. Our study is focused on determining the best position for efficient cooling of the volumetric heat-generating cylindrical source. By analyzing temperature contours, velocity vectors, and flow streamlines within the enclosure, we sought to identify the most effective cooling position. Among all cases studied, we found that Case 1 exhibited the best cooling performance, yielding the lowest source temperature in both the pure natural convection regime and surface radiation interaction case. Furthermore, we observed reduced cooling efficiency and increased maximum source temperature when the source was positioned near the walls and corners. Additionally, our analysis revealed that radiation played a significant role in heat transfer, contributing approximately 47% of the total heat transfer rate. These findings hold potential for various industrial applications, including electronics cooling, automotive cooling systems, thermal management in data centers, aerospace applications, and heat exchangers. Understanding the impact of positioning and radiation can lead to enhanced cooling strategies, optimizing performance and stability in heat-sensitive components and industrial systems.

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3-D Numerical Investigations on Conjugate Natural Convection and Thermal Radiation in a Cubical Enclosure with Inbuilt Cylindrical Heat-Generating Source

  • 会议论文

  • 发表日期：

    2025年

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  • Tanna Charan Sai,
  • Mohd Sonu,
  • Md Amanullah,
  • Dushyant Sharma,
  • Anil Kumar Sharma

摘要

In this paper, we present the results of comprehensive 3D simulations aimed at investigating heat transfer characteristics in a cubical enclosure with an internal heat source. Our study is focused on determining the best position for efficient cooling of the volumetric heat-generating cylindrical source. By analyzing temperature contours, velocity vectors, and flow streamlines within the enclosure, we sought to identify the most effective cooling position. Among all cases studied, we found that Case 1 exhibited the best cooling performance, yielding the lowest source temperature in both the pure natural convection regime and surface radiation interaction case. Furthermore, we observed reduced cooling efficiency and increased maximum source temperature when the source was positioned near the walls and corners. Additionally, our analysis revealed that radiation played a significant role in heat transfer, contributing approximately 47% of the total heat transfer rate. These findings hold potential for various industrial applications, including electronics cooling, automotive cooling systems, thermal management in data centers, aerospace applications, and heat exchangers. Understanding the impact of positioning and radiation can lead to enhanced cooling strategies, optimizing performance and stability in heat-sensitive components and industrial systems.