Influence of Transition on High-Lift Prediction with the NASA Trap Wing Model

2011 ◽  
Author(s):  
Peter Eliasson ◽  
Ardeshir Hanifi ◽  
Shia-Hui Peng
Keyword(s):  
High Lift ◽  
Wing Model

Experimental and Numerical Analysis of the Aerodynamic and Aeroacoustic Properties of a 2D High-Lift Wing Model

2018 ◽  
Author(s):  
Lourenço T. Lima Pereira ◽  
Laura Botero ◽  
Matheus T. de Araujo ◽  
Fernando Catalano ◽  
Danillo C. Reis ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
High Lift ◽  
Wing Model

Noise Generation Characteristics of a High-lift Swept and Tapered Wing Model

2013 ◽  
Author(s):  
Yuzuru Yokokawa ◽  
Mitsuhiro Murayama ◽  
Yasushi Ito ◽  
Hiroki Ura ◽  
Dong-Youn Kwak ◽  
...  
Keyword(s):  
Noise Generation ◽  
High Lift ◽  
Wing Model

Unsteady aerodynamics of dragonfly using a simple wing–wing model from the perspective of a force decomposition

2010 ◽  
Vol 663 ◽  
pp. 233-252 ◽  
Author(s):  
CHENG-TA HSIEH ◽  
CHUN-FEI KUNG ◽  
CHIEN C. CHANG ◽  
CHIN-CHOU CHU
Keyword(s):  
Insect Flight ◽  
Unsteady Aerodynamics ◽  
Mass Effect ◽  
Reynolds Numbers ◽  
Life Cycles ◽  
Many Body ◽  
High Lift ◽  
Wing Motion ◽  
Wing Model ◽  
Force Decomposition

Insects perform their multitude of flight skills at frequencies of tens to hundreds of Hertz, and the aerodynamics of these skills are fundamentally unsteady. Intuitively, unsteadiness may come from unsteady wing motion, unsteady surface vorticity or vorticity being shed into the rear and front wakes. In this study, we propose to investigate the aerodynamics of dragonfly using a simplified wing–wing model from the perspective of many-body force decomposition and the associated force elements. Insect flight usually operates at Reynolds numbers of the order of several hundreds, at which the surface vorticity is shown to play a substantial role. There are important cases where the added mass effect is non-negligible. Nevertheless, the major contribution to the forces comes from the vorticity within the flow. This study focused on the effects of mutual interactions due to phase differences between the fore- and hindwings in the translational as well as rotational motions. It is well known that the dynamic stall vortex is an important mechanism for an unsteady wing to gain lift. In analysing the life cycles of lift and thrust elements, we also associate some high lift and thrust with the mechanisms identified as ‘riding on’ lift elements, ‘driven by’ thrust elements and ‘sucked by’ thrust elements, by which a wing makes use of a shed or fused vortex below, in front of, and behind it, respectively. In addition, a shear layer attaching to each wing may also provide significant thrust elements.

Investigation of Noise Generation from Bluff Flap Side-edge of a High-Lift Wing Model

2014 ◽  
Vol 12 (APISAT-2013) ◽  
pp. a9-a16
Author(s):  
Mitsuhiro MURAYAMA ◽  
Yuzuru YOKOKAWA ◽  
Kazuomi YAMAMOTO ◽  
Hiroki URA ◽  
Taro IMAMURA ◽  
...  
Keyword(s):  
Noise Generation ◽  
High Lift ◽  
Side Edge ◽  
Wing Model

Study on Noise Generation from Slat Tracks Using a High-Lift Wing Model

2015 ◽  
Author(s):  
Mitsuhiro Murayama ◽  
Yuzuru Yokokawa ◽  
Yasushi Ito ◽  
Kazuomi Yamamoto ◽  
Takehisa Takaishi ◽  
...  
Keyword(s):  
Noise Generation ◽  
High Lift ◽  
Wing Model

Numerical Simulation of NASA Trap-Wing Model as a Colombian Contribution to the High-Lift Prediction Workshop

2012 ◽  
Author(s):  
Omar Lopez ◽  
Nicolas Ochoa-Lleras ◽  
Juan Mahecha ◽  
Sebastian Leguizamon ◽  
Jaime Escobar ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
High Lift ◽  
Wing Model

The Influence of the Flight Aerodynamic for Interactions of Wings and Body of the Honeybee

2014 ◽  
Vol 670-671 ◽  
pp. 700-704
Author(s):  
Hong Yan Zhao ◽  
Peng Fei Zhang ◽  
Yun Ma
Keyword(s):  
Numerical Simulation ◽  
Lift Coefficient ◽  
Leading Edge ◽  
Flapping Wing ◽  
High Lift ◽  
Leading Edge Vortex ◽  
Wing Model ◽  
Circulation Mechanism ◽  
Rotation Phase ◽  
Edge Vortex

The flight mechanism of flapping-wing was studied by using the translation-rotation model. We established the flapping-coordinate of the wing, gave the equation of the motion, and simplified the flapping-wing model. The aerodynamic and vortices were simulated by the CFD software of Fluent. The leading-edge vortex generated in the translation phase, and delayed stall mechanism had an important effect on the high lift. In the rotation phase, lift peaks appear due to the wing rapidly rotating and rotational circulation mechanism. The aerodynamics were obtained in different amplitudes, frequencies, angles of attack, the locations of rotating axis and timings of rotation. The influence of these parameters on average lift coefficient is obvious, while it can be ignored to average drag coefficient. Keywords: wing, aerodynamics, vortices, numerical simulation.

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