Effect of Moving Surface on Aerodynamic Characteristics in NACA0012 Airfoil

Abstract

This study focuses on the effects of moving surface on aerodynamics characteristics in NACA 0012 airfoil through numerical simulation. Two particular cases are considered: (i) Single moving surface (ii) Double moving surface. When 'single moving surface' is considered, only one moving surface of 10% of the chord length(c) is placed at upper surface of the airfoil starting from 0.05c to 0.15c. When 'double moving surface' is considered, one moving surface of 10% of the chord length is placed at upper surface at position starting from 0.05c to 0.15c and the other moving surface of same size is placed at lower surface at same position. Momentum injection into the flow field moves the point of boundary layer separation in the vicinity of trailing edge of the airfoil. By momentum injection through single moving surface with the surface velocity twice the free stream velocity and for different angle of attack, it is possible to reduce the average drag coefficient by 23.9%, compared with no moving surface. For the same condition with double moving surface, it is possible to reduce the average drag coefficient by 25.9%. For using moving surface, boundary-layer separation is delayed along the chord length on the upper surface of the airfoil. The value of lift coefficient increases slightly for moving surface. For single and double moving surface, average increment of lift to drag ratio are 37.3% and 41% respectively.

Keywords

• Moving surface
• boundary layer separation
• momentum injection

How to cite

Md. Sadiqul Islam, Shaik Merkatur Hakim, Mohammad Ali (2016). Effect of Moving Surface on Aerodynamic Characteristics in NACA0012 Airfoil. Sonargaon University Journal, 1(2), 1–14.

@article{islam20161,
  title   = {Effect of Moving Surface on Aerodynamic Characteristics in NACA0012 Airfoil},
  author  = {Md. Sadiqul Islam and Shaik Merkatur Hakim and Mohammad Ali},
  journal = {Sonargaon University Journal},
  volume  = {1},
  number  = {2},
  pages   = {1--14},
  year    = {2016},
  issn    = {2518-3125},
  url     = {https://su.edu.bd/journal/volume-1-number-2/effect-of-moving-surface-on-aerodynamic-characteristics-in-naca0012-airfoil}
}