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Abstract <p>The effect of quasi-two-dimensional protruding relief elements (strips) inclined to the flow direction on the position of laminar-turbulent transition on a wing model with a sweep angle of 45° is studied using quantitative thermography under various experimental conditions. The robustness of the sweeping surface relief method for laminar flow control in the presence of enhanced freestream turbulence and increased wing surface roughness is investigated and discussed. It is shown that this laminar flow control method is also robust to moderate variations in freestream velocity.</p>

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Swept-Wing Laminar Flow Control Using Sweeping Surface Relief under Enhanced Level of External Disturbances

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • A. V. Boiko,
  • V. I. Borodulin,
  • A. V. Ivanov,
  • D. A. Mishchenko,
  • A. D. Cherepanov

摘要

Abstract

The effect of quasi-two-dimensional protruding relief elements (strips) inclined to the flow direction on the position of laminar-turbulent transition on a wing model with a sweep angle of 45° is studied using quantitative thermography under various experimental conditions. The robustness of the sweeping surface relief method for laminar flow control in the presence of enhanced freestream turbulence and increased wing surface roughness is investigated and discussed. It is shown that this laminar flow control method is also robust to moderate variations in freestream velocity.