Excellence in Research and Innovation for Humanity
%0 Journal Article
%A Ahmet Selim Durna and  Bayram Celik and  Aydin Misirlioglu
%D 2012 
%J  International Journal of Mechanical, Aerospace, Industrial, Mechatronic and Manufacturing Engineering
%B World Academy of Science, Engineering and Technology
%I International Science Index 68, 2012
%T Vortex Wake Formation and Its Effects on Thrust and Propulsive Efficiency of an Oscillating Airfoil
%U http://waset.org/publications/6978
%V 68
%X Flows over a harmonically oscillating NACA 0012
airfoil are simulated here using a two-dimensional, unsteady,
incompressibleNavier-Stokes solver.Both pure-plunging and
pitching-plunging combined oscillations are considered at a Reynolds
number of 5000. Special attention is paid to the vortex shedding and
interaction mechanism of the motions. For all the simulations
presented here, the reduced frequency (k) is fixed at a value of 2.5
and plunging amplitude (h) is selected to be in the range of 0.2-0.5.
The simulation results show that the interaction mechanism between
the leading and trailing edge vortices has a decisive effect on the
values of the resulting thrust and propulsive efficiency.
%P 1496 - 1502