Implicit LES Simulations of a Flexible Flapping Wing
نویسندگان
چکیده
A high-order (up to 6th order) Navier-Stokes solver is coupled with a structural solver that decomposes the equations of three-dimensional elasticity into cross-sectional, smalldeformation and spanwise, large-deformation analyses for slender wings. The resulting high-fidelity aeroelastic solver is applied to the investigation of both a rigid and moderately flexible rectangular wing undergoing a pure plunging motion. Comparisons of the computed results demonstrate good agreement with available experimental measurements. A description of the complex interaction between the unsteady aerodynamics and the flexible wing structural dynamics is given. Connections between the results of this analysis and the enhanced aerodynamic loads for the flexible wing are made.
منابع مشابه
Loading Estimation of Flapping Wings under Aeroelastic Effect Using Finite Element Method
The aim of this paper is to provide an aeroelastic computational tool which determines the induced wing loads during flapping flight. For this purpose, a Finite Element (FE) code based on a four-node plate bending element formulation is developed to simulate the aeroelastic behavior of flapping wings in low incompressible flow. A quasi-steady aerodynamic model is incorporated into the aeroelast...
متن کاملDesign and Fabrication of Ultralight High-Voltage Power Circuits for Flapping-Wing Robotic Insects
Flapping-wing robotic insects are small, highly maneuverable flying robots inspired by biologicalinsects and useful for a wide range of tasks, including exploration, environmental monitoring, searchand rescue, and surveillance. Recently, robotic insects driven by piezoelectric actuators have achievedthe important goal of taking off with external power; however, fully autonomous operation requir...
متن کاملFlapping Wing Air Vehicles at Kaist
The flapping wing flight has superior maneuverability and aerodynamic advantages in a low Reynolds number regime. Nature’s flyers generate aerodynamic forces and moments from the various wing motions such as flapping and pitching to fly and sustain its flight stability. Bioinspired design of flapping air vehicle is one of the effective ways to exploit such a complex system. However the flapping...
متن کاملExperimental and computational studies of the aerodynamic performance of a flapping and passively rotating insect wing
Flapping wings are important in many biological and bioinspired systems. Here, we investigate the fluid mechanics of flapping wings that possess a single flexible hinge allowing passive wing pitch rotation under load. We perform experiments on an insect-scale (≈1 cm wing span) robotic flapper and compare the results with a quasi-steady dynamical model and a coupled fluid–structure computational...
متن کاملThe Lattice Boltzmann Method for Flapping Wing Aerodynamics
The lattice Boltzmann method offers an alternative framework compared to the NavierStokes simulations. However, the applicability of this method to simulate moving boundary problems has not received sufficient attention. In this work, different treatments of the noslip condition of lattice Boltzmann method for the moving boundary problem of rigid and flexible wings flapping in a fluid have been...
متن کامل