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Surface roughness effects on aircraft walls significantly influence boundary layer transition locations, thereby profoundly affecting aerodynamic performance and heat transfer characteristics. This chapter proposes a roughness amplification factor transport equation and establishes transition criteria accounting for roughness effects based on wind tunnel experimental data. Coupled with an intermittency factor transport equation, these components form a comprehensive transition prediction model that systematically incorporates wall roughness effects.

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Transition Prediction Model Considering the Effects of Surface Roughness

  • 章节

  • 发表日期：

    2025年

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  • Jiakuan Xu,
  • Min Chang,
  • Junqiang Bai

摘要

Surface roughness effects on aircraft walls significantly influence boundary layer transition locations, thereby profoundly affecting aerodynamic performance and heat transfer characteristics. This chapter proposes a roughness amplification factor transport equation and establishes transition criteria accounting for roughness effects based on wind tunnel experimental data. Coupled with an intermittency factor transport equation, these components form a comprehensive transition prediction model that systematically incorporates wall roughness effects.