Computational investigation of cicada aerodynamics in forward flight
نویسندگان
چکیده
منابع مشابه
Computational investigation of cicada aerodynamics in forward flight.
Free forward flight of cicadas is investigated through high-speed photogrammetry, three-dimensional surface reconstruction and computational fluid dynamics simulations. We report two new vortices generated by the cicada's wide body. One is the thorax-generated vortex, which helps the downwash flow, indicating a new phenomenon of lift enhancement. Another is the cicada posterior body vortex, whi...
متن کاملForward flight of birds revisited. Part 1: aerodynamics and performance
This paper is the first part of the two-part exposition, addressing performance and dynamic stability of birds. The aerodynamic model underlying the entire study is presented in this part. It exploits the simplicity of the lifting line approximation to furnish the forces and moments acting on a single wing in closed analytical forms. The accuracy of the model is corroborated by comparison with ...
متن کاملUnsteady computational fluid dynamics modeling of free-flight projectile aerodynamics
This paper describes a new multidisciplinary computational study undertaken to model the flight trajectories and the free-flight aerodynamics of both a finned projectile at supersonic velocities and a spinning projectile at subsonic speeds with and without aerodynamic flow-control. Actual flight trajectories are computed using an advanced coupled computational fluid dynamics (CFD)/rigid body dy...
متن کاملA computational study of the aerodynamics and forewing-hindwing interaction of a model dragonfly in forward flight.
The aerodynamics and forewing-hindwing interaction of a model dragonfly in forward flight are studied, using the method of numerically solving the Navier-Stokes equations. Available morphological and stroke-kinematic parameters of dragonfly (Aeshna juncea) are used for the model dragonfly. Six advance ratios (J; ranging from 0 to 0.75) and, at each J, four forewing-hindwing phase angle differen...
متن کاملInvestigation of Cavity Flow Aerodynamics Using Computational Fluid Dynamics
The acoustic environment of a bomb bay or cavity causes large pressure oscillations and the severity of them is a problem that has intrigued researchers for years [68]. Many suppression techniques have been applied with varying degrees of success. Despite this, the understanding of why the pressure oscillations exist or how the suppression methods work have not been investigated as thoroughly. ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of The Royal Society Interface
سال: 2015
ISSN: 1742-5689,1742-5662
DOI: 10.1098/rsif.2014.1116