نتایج جستجو برای: unsteady aerodynamics

تعداد نتایج: 13186  

2002
Peter G. Ifju David A. Jenkins Scott Ettinger Yongsheng Lian Wei Shyy Martin R. Waszak

This paper documents the development and evaluation of an original flexible-wing-based Micro Air Vehicle (MAV) technology that reduces adverse effects of gusty wind conditions and unsteady aerodynamics, exhibits desirable flight stability, and enhances structural durability. The flexible wing concept has been demonstrated on aircraft with wingspans ranging from 18 inches to 5 inches. Salient fe...

Journal: :International Journal of Turbo and Jet Engines 2004

Journal: :Journal of Wind Engineering and Industrial Aerodynamics 2013

Journal: :Fluids 2022

A data-driven adaptive reduced order modelling approach is presented for the reconstruction of impulsively started and vortex-dominated flows. residual-based error metric first time in framework approach. The Reduced Order Modelling selects locally most accurate model on basis lowest residual produced by substituting reconstructed flow field into a finite volume discretisation Navier–Stokes equ...

Journal: :Journal of the Japan Society for Aeronautical and Space Sciences 1997

2002
Xinzhong Chen Ahsan Kareem

Aerodynamic forces on bridges are commonly separated into static, self-excited, and buffeting force components. By delving into the relationships among force descriptors for static, self-excited, and buffeting components, novel perspectives are developed to unveil the subtle underlying complexities in modeling aerodynamic forces. Formulations for airfoil sections and those based on quasisteady ...

2007
Luca Greco Claudio Testa Francesco Salvatore

The development of a wind turbine aerodynamics model using a Boundary Integral Equation model (BIEM) is presented. The methodology is valid to study inviscid unsteady flows around three dimensional bodies of arbitrary shape and arbitrarily moving with respect to the incoming flow. The extension of this methodology to study viscosity effects in turbine blade flow at high angle of attack is addre...

Journal: :Journal of Fluids and Structures 2021

Abstract The peak loads experienced by aircraft of all scales will typically be during gusts, turbulence or extreme manoeuvres. Understanding the aerodynamic response to these transient disturbances is therefore crucial, particularly when Leading-Edge Vortices (LEVs) occur. This fundamental study investigates a wide range plunging motions. exhibited strong dependence motion amplitude yet remain...

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