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Thermal convection in a two-dimensional circular enclosure is studied using long-time direct numerical simulations. We conducted an analysis on how the control parameters Ra and Pr influence the flow structures, global flow patterns, and heat transfer characteristics. To achieve this, we systematically varied the control parameters within the ranges of \(10^7 \le \text {Ra} \le 10^{10}\) and \(0.1 \le \text {Pr} \le 15\) . Unlike square convection cells, in the case of the circular convection cell, we observe three flow states: counterclockwise uniform circulation, chaotic state, and clockwise uniform circulation.

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Rayleigh-Bénard Convection in a Circular Enclosure

  • 会议论文

  • 发表日期：

    2025年

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  • Snehal Sunil Patil,
  • V. R. Krishna Priya,
  • Rajaram Lakkaraju

摘要

Thermal convection in a two-dimensional circular enclosure is studied using long-time direct numerical simulations. We conducted an analysis on how the control parameters Ra and Pr influence the flow structures, global flow patterns, and heat transfer characteristics. To achieve this, we systematically varied the control parameters within the ranges of \(10^7 \le \text {Ra} \le 10^{10}\) and \(0.1 \le \text {Pr} \le 15\) . Unlike square convection cells, in the case of the circular convection cell, we observe three flow states: counterclockwise uniform circulation, chaotic state, and clockwise uniform circulation.