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An empirical investigation was carried out on a base NACA 0015 symmetric airfoil, alongside a modified version featuring emery sheets of varying grit sizes, spanning the entire chord length from the leading edge to the trailing edge on the airfoil’s pressure side. Comprehensive time-series pressure data was meticulously collected through a sophisticated Ethernet-based simultaneous pressure scanner equipped with 64 channels and placed on the airfoil surface, comprising 21 pressure ports. This analytical study is primarily aimed at enhancing the airfoil’s aerodynamic efficiency through the strategic utilization of surface roughness applied to the pressure side. Notably, the emery sheets used exhibited different grit sizes, specifically 80, 120, 220, 320, and 400 grits. The exhaustive analysis of the acquired pressure data underscores the efficacy of employing surface roughness as an economical and viable passive flow control device for augmenting the overall efficiency of the airfoil.

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Effects of Roughness on the Pressure Side of a Symmetric NACA 0015 Airfoil

  • 会议论文

  • 发表日期：

    2025年

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  • M. Vikram,
  • Bheema Kalyana Raama,
  • Ranga Srinivas Gokul,
  • E. Karthik Vel,
  • S. Nadaraja Pillai

摘要

An empirical investigation was carried out on a base NACA 0015 symmetric airfoil, alongside a modified version featuring emery sheets of varying grit sizes, spanning the entire chord length from the leading edge to the trailing edge on the airfoil’s pressure side. Comprehensive time-series pressure data was meticulously collected through a sophisticated Ethernet-based simultaneous pressure scanner equipped with 64 channels and placed on the airfoil surface, comprising 21 pressure ports. This analytical study is primarily aimed at enhancing the airfoil’s aerodynamic efficiency through the strategic utilization of surface roughness applied to the pressure side. Notably, the emery sheets used exhibited different grit sizes, specifically 80, 120, 220, 320, and 400 grits. The exhaustive analysis of the acquired pressure data underscores the efficacy of employing surface roughness as an economical and viable passive flow control device for augmenting the overall efficiency of the airfoil.