NUMERICAL ANALYSIS OF THE GROUND EFFECT ON INSECT HOVERING

The ground effect on insect hovering is investigated using an immersed boundary-lattice Boltzmann method to solve the two-dimensional incompressible Navier-Stokes equations. A virtual model of an elliptic foil with oscillating translation and rotation near a ground is used. The objective of this stu...

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Bibliographic Details
Published in:Journal of Hydrodynamics 2008-02, Vol.20 (1), p.17-22
Main Authors: Gao, Tong, Liu, Nan-sheng, Lu, Xi-yun
Format: Article
Language:English
Subjects:
Engineering
Engineering Fluid Dynamics
Hydrology/Water Resources
Numerical and Computational Physics
Odonata
Simulation
不稳定力
内部盘旋
地面效应
涡旋动力学
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Summary:The ground effect on insect hovering is investigated using an immersed boundary-lattice Boltzmann method to solve the two-dimensional incompressible Navier-Stokes equations. A virtual model of an elliptic foil with oscillating translation and rotation near a ground is used. The objective of this study is to deal with the ground effect on the unsteady forces and vortical structures and to get the physical insights in the relevant mechanisms. Two typical insect hovering modes, i.e., normal and dragonfly hovering mode, are examined. Systematic computations have been carried out for some parameters, and the ground effect on the unsteady forces and vortical structures is analyzed.
ISSN:1001-6058
1878-0342
1000-4874
DOI:10.1016/s1001-6058(08)60022-0