Modeling an Increase in the Lift and Aerodynamic Efficiency of a Thick Gottingen Airfoil with Optimum Arrangement of a Vortex Cell

作者：Isaev S A^*; Sudakov A G; Usachov A E; Kharchenko V B

来源：Technical Physics Letters, 2015, 41(6): 561-564.

DOI：10.1134/S1063785015060061

The Reynolds equations closed using the Menter shear-stress-transfer model modified with allowance for the curvature of flow line have been numerically solved jointly with the energy equation. The obtained solution has been used to calculate subsonic flow (at M = 0.05 and 5A degrees angle of attack) past a thick (24% chord) Gottingen airfoil with variable arrangement of a small-sized (about 10% chord) circular vortex cell with fixed distributed suction Cq = 0.007 from the surface of a central body. It is established that the optimum arrangement of the vortex cell provides a twofold decrease in the bow drag coefficient Cx, a threefold increase in the lift coefficient Cy, and an about fivefold increase in the aerodynamic efficiency at Re = 10(5) in comparison to the smooth airfoil.

• 出版日期2015-6