Results 11 to 20 of about 651,062 (315)

Ground Effect Aerodynamics of Race Cars [PDF]

Applied Mechanics Reviews, 2006
We review the progress made during the last 30years on ground effect aerodynamics associated with race cars, in particular open wheel race cars. Ground effect aerodynamics of race cars is concerned with generating downforce, principally via low pressure on the surfaces nearest to the ground.
Zhang, Xin, Toet, Willem, Zerihan, Jonathan   +2 more
openaire   +5 more sources

Revising of the Near Ground Helicopter Hover: The Effect of Ground Boundary Layer Development

Applied Sciences, 2021
The interaction of a helicopter rotor with the ground in hover flight is addressed numerically using a hybrid Eulerian–Lagrangian CFD model. When a helicopter takes off or lands, its wake interferes with the ground.
Theologos Andronikos, George Papadakis, Vasilis Riziotis, Spyros Voutsinas   +3 more
doaj   +1 more source

'Ground effect' Inter-Modal Fast Sea Transport [PDF]

TransNav, 2014
Energy and emission reduction strategies are extremely important in actual transport situation. ?Ground effect? technology recognized from the late sixties has a problem with wide expanding in sea transport.
Zbigniew Pagowski, Krzysztof Szafran
doaj   +1 more source

Aerodynamic Effects of Ceiling and Ground Vicinity on Flapping Wings

Applied Sciences, 2022
The combined ceiling and ground effect on the aerodynamics of a hovering flapping wing is investigated using numerical simulations. In the simulations, the wing was located between the ceiling and the ground.
Xueguang Meng, Yinghui Han, Zengshuang Chen, Anas Ghaffar, Gang Chen   +4 more
doaj   +1 more source

Wake behind a Compound Wing in Ground Effect

Journal of Marine Science and Engineering, 2020
Flow structure is a crucial point for the conceptual design of Wing-in-Ground effect (WIG) crafts. In this study, pressure distributions around a compound wing, velocity and the turbulent intensity distribution in the wake area after trailing of the wing,
Saeed Jamei, Adi Maimun, Rasul Niazmand Bilandi, Nor Azwadi, Simone Mancini, Luigi Vitiello, Maria De Carlini   +6 more
doaj   +1 more source

Ground Effect in Fruit Fly Hovering: A Three-Dimensional Computational Study

Journal of Biomechanical Science and Engineering, 2013
In very few studies it is shown that an increase in vertical force can be achieved when a flapping-wing hovers in ground effect (IGE). The body, however, has usually been neglected and its influence on three-dimensional vortex structures and consequent ...
Masateru MAEDA, Hao LIU
doaj   +1 more source

Toward Hybrid CAA with Ground Effects [PDF]

International Journal of Aeroacoustics, 2014
CAA based on the Linearised Euler Equations (LEE) is applied to propagate aerodynamic sound over an extended distance including ground effects. The LEE are coupled to data from an LES via an acoustic analogy to follow-up the sound from the source to the extended far field: the complete chain is illustrated on the sound generated by a cylinder in a M ∼
Jacob, Marc, Dragna, Didier, Cahuzac, Adrien, Boudet, Jérôme, Blanc-Benon, Philippe   +4 more
openaire   +5 more sources

Grounding as a Side‐Effect of Grounding [PDF]

Topics in Cognitive Science, 2018
AbstractIn relation to semantics, “grounding” has (at least) two relevant meanings. “Symbol grounding” is the process of connecting symbols (e.g., words) to perception and the world. “Communicative grounding” is the process of interactively adding to common ground in dialog. Strategies for grounding in human communication include, crucially, strategies
openaire   +2 more sources

Safety analysis of rotors in ground effect [PDF]

Aerospace Science and Technology, 2021
In this work, computational fluid dynamics was used to support safety analyses of rotors operating in ground effect. Initially, the research focused on the evaluation and prediction of the outwash generated by a hovering micro-rotor, and time-averaged outflow velocities were compared with experimental results. Then, using scaling factors, the simulated
Federico Rovere, George Barakos, René Steijl   +2 more
openaire   +2 more sources

Investigation of Heaving-pitching Airfoil in Ground Proximity using Large Eddy Simulations [PDF]

Journal of Applied Fluid Mechanics
This study examines the aerodynamics of a wing-in-ground (WIG) airfoil subjected to heaving (plunging) & pitching motion, specifically examining the distinctions in flow between transitional and turbulent states, which are essential for assessing its ...
Y. E. William, S. Kanagalingam, M. H. Mohamed   +2 more
doaj   +1 more source