upwash

upwash

upwash
upwash
i. The upward movement of air ahead of the leading edge of a subsonic wing, giving a positive lift.
ii. The upward movement of air around the outside of the trailing vortex behind a wing, giving a positive lift. This upwash usually curves over to become a downwash on the inner side of the vortex.
References in periodicals archive ?
This causes highly complicated rear flow patterns such as vortices, eddies, downwash, upwash and mixed wake flows [1].
The finite volume discretization approach is used to discretize the whole domain so that separation of wind flow, upwash, and downwash mechanisms can happen similar to the experimental study.
Inamura, "Upwash formation on splash plate atomization," International Journal of Multiphase Flow, vol.
where [alpha] is the geometric angle of attack in an arbitrary spanwise section, [[delta].sub.1] and [[delta].sub.2] are the incidence angle of the fore wing and the hind wing, respectively, [[epsilon].sub.11]([[theta].sub.1]) and [[epsilon].sub.22]([[theta].sub.2]) are the induced angle of attack by its self-downwash effect, and [[epsilon].sub.12]([[theta].sub.1]) and [[epsilon].sub.21]([[theta].sub.2]) are the induced angle of attack by the upwash and downwash effect between the fore wing and the hind wing, respectively; the induced angle of attack is positive for the downwash effect.
Tenders are invited for Providing Scabar valve and Air valve in 27 inch line of Yashawant sagar pumping main line and Changing of Foot valve of Upwash pump at Devdharam plant SECOND CALL
As the air squeezes around a bird's wingtips, it creates a current moving up -- called an upwash.
It's commonly called downwash, but also involves the wing's upwash and wingtip vortices.
Lissaman and Shollenberger (1970) applied aerodynamic theory to predict that 25 birds in a V could have a flight range increase of about 70% over a solo bird, with the posterior birds "riding" on the upwash of tip vortices generated from the upstream members.
A rearward plane that keeps one of its wing tips in a vortex from the plane in front gets a boost from the upwash of air and can save fuel.
Rod and turnbuckles appear to support The Amoeba's ceiling element and dramatic upwash lighting is enhanced by the dark, open bar joist ceiling.
Installation of EMTEQ's full range of LED interior lighting and cabin accessories include Upwash / Downwash lighting, reading/table lights, air gaspers, and AC power outlets.