The results could be important for maintaining good maneuverability at high speeds in the aviation sector. The purpose of this study is primarily the basic research of the aerodynamic mechanisms during the falcon’s diving flight. The drag for the cupped wing profile is reduced in relation to the configuration of opened wings (without cupped-like profile) while lift is increased. The results of the numerical simulations via ICEM CFD and OpenFOAM show predominant flow structures around the body surface and in the wake of the falcon model such as a pair of body vortices and tip vortices. Characteristic shapes of the wings while diving are studied with regard to their aerodynamics using computational fluid dynamics (CFD). In particular, the flow in the gap between the main body and the cupped wing is studied to understand how this flow interacts with the body and to what extend it affects the integral forces of lift and drag. Especially the cupped wing configuration which is a unique feature of the wing shape in falcon peregrine dive is our focus herein. The aerodynamic mechanisms involved are not fully understood yet and the search for a conclusive answer to this fact motivates the three-dimensional (3-D) flow study. Received 1 October 2014 revised 31 October 2014 accepted 28 November 2014ĭuring a dive peregrine falcons can reach velocities of more than 320 km/h and makes themselves the fastest animals in the world. This work is licensed under the Creative Commons Attribution International License (CC BY). Institute of Mechanics and Fluid Dynamics, TU Bergakademie Freiberg, Freiberg, GermanyĮmail: © 2014 by authors and Scientific Research Publishing Inc.
0 Comments
Leave a Reply. |