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      https://www.ias.ac.in/article/fulltext/sadh/044/01/0021

    • Keywords

       

      NACA 0012 aerofoil; low-Reynolds-number flows; flow separation; transition; laminar separation bubble; negative lift.

    • Abstract

       

      Numerical investigations on the flow over NACA 0012 aerofoil are carried out to provide better understanding of the unusual lift characteristics exhibited by this aerofoil at low Reynolds numbers. Computations are carried out at Re = 10,000–100,000, for different values of angles of attack and freestream turbulenceintensity. There exists a narrow range of these parameters where the net circulation around this symmetrical aerofoil is negative, leading to the generation of negative lift at positive angles of attack. Different flow regimes are identified and physical explanations are given for this unusual behaviour of negative lift, andthe influence of different flow parameters is discussed.

    • Author Affiliations

       

      C PRANESH1 M SIVAPRAGASAM1 M D DESHPANDE1 H K NARAHARI1

      1. Department of Automotive and Aeronautical Engineering, M S Ramaiah University of Applied Sciences, Bengaluru 560058, India
    • Dates

       
  • Sadhana | News

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