Buscar
Mostrando ítems 1-10 de 110
Insights on the unsteadiness and stall effects on the characteristics and responses of continuous wing-based systems
(2021-01-01)
The effects of the aerodynamic loads on continuous wing-based systems can be represented using a quasi-steady or a fully unsteady reduced-order modeling. Frequently, the quasi-steady formulation is used to model the ...
Fast multipole accelerated unsteady vortex lattice method based computations
(American Institute of Aeronautics and Astronautics Inc., 2019-06)
The authors present an accelerated aerodynamic computational model derived from the integration of the fast multipole method (FMM) with the unsteady vortex lattice method (UVLM) based aerodynamic model. It is determined ...
A numerical model to study the nonlinear and unsteady aerodynamics of bioinspired morphing-wing concepts
(SAGE Publications Inc., 2015-09)
In the present paper, a numerical model to study the nonlinear and unsteady aerodynamics of morphing-wing concepts inspired by bird flight is developed. The model includes: i) a wing topology inspired by gull wings; ii) a ...
Modified unsteady vortex-lattice method to study flapping wings in hover flight
(Amer Inst Aeronaut Astronaut, 2013-09)
A numerical-simulation tool is developed that is well suited for modeling the unsteady nonlinear aerodynamics of flying insects and small birds as well as biologically inspired flapping-wing micro air vehicles. The present ...
Comparative study on analytical and computational aerodynamic models for flapping wings MAVs
(Royal Aeronautical Soc, 2020-07)
A range of quasi-steady and unsteady aerodynamic models are used to predict the aerodynamic forces experienced by a flapping wing and a detailed comparison amongst these predictions in provided. The complexity of the models ...
Investigations on the interactions between structural and aerodynamic nonlinearities and unsteadiness for aeroelastic systems
(2022-01-01)
A nonlinear analysis is performed on a two-degree-of-freedom wing-based system. Structural nonlinearities are introduced in the pitch degree of freedom when considering two different forms of the aerodynamic loads. Comparisons ...
On the aerodynamic analysis and conceptual design of bioinspired multi-flapping-wing drones
(2021-09-01)
Many research studies have investigated the characteristics of bird flights as a source of bioinspiration for the design of flapping-wing micro air vehicles. However, to the best of the authors’ knowledge, no drone design ...
Flow simulations with ultra-low Reynolds numbers over rigid and flexible airfoils subject to heaving and flapping motions
(Isfahan University of Technology, 2017)
Numerical simulations of flow patterns at ultra-low Reynolds numbers over rigid and flexible airfoils and the influence of flexibility on main aerodynamic properties, are presented and discussed. Typical unsteady flights ...
Enhancement to least square-based approach for time-domain unsteady aerodynamic approximation
(2021-01-01)
The modeling of different problems in aeroelasticity requires a time-domain equation of motion, especially to design modern controllers and study nonlinear characteristics. Typically, unsteady aerodynamic forces are written ...
Computational study on aerodynamically coupled piezoelectric harvesters
(Sage Publications Ltd, 2020-08)
In this work, the authors present a two-dimensional computational model for predicting the aeroelastic response as well as the output power of vertically arranged harvesters by taking into account all aerodynamic interactions. ...