Author/Authors :
Bhatia, D School of Aerospace Engineering - The University of Nottingham Ningbo China - China , Li, G School of Aeronautics - Northwestern Polytechnical University - China , Lin, Y Engineering and Computing - Kingston University London - United Kingdom , Sun, J School of Aeronautics - Northwestern Polytechnical University - China , Barrington, P Engineering and Computing - Kingston University London - United Kingdom , Li, H School of Aeronautics - Northwestern Polytechnical University - China , Wang, J Engineering and Computing - Kingston University London - United Kingdom
Abstract :
This paper explores the use of Two-Dimensional sinusoidal surface features to delay transition and/or reduce
drag. The authors, in this paper demonstrated that the presence of low amplitude sinusoidal surface features
might damp the disturbances in the laminar boundary layer, reduce wall shear stress and maintain laminar flow
for longer than a conventional flat plate. The hypothesis of the paper is inspired by the simplification of the
dermal denticle on the surface of the shark-skin. Simulations are carried out using the Transition SST model in
FLUENT based on the evidences of the transition model being suitable for a wider variety of high curvature
scenarios. The surface waves are simulated for different amplitudes and wavelengths and their impact on
transition onset and drag reduction are quantified at different velocities. Results presented in this paper indicate
that a transition delay of 10.8% and a drag reduction of 5.2% are achievable. Furthermore, this pap
Keywords :
Transition delay , Drag reduction , Surface waves , Transition SST , Shark-skin , Biomimetics
