Laminar Boundary Layer in the Presence of Suction PDF Download
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Author: Leonid Filippovich Kozlov
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 186
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Book Description
Author: Leonid Filippovich Kozlov
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 186
Get Book Here
Book Description
Author: Leonid Filippovich Kozlov
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 169
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Book Description
![Laminar Boundary Layer in Presence of Suction [with List of References] PDF](https://books.google.com/books/content/images/frontcover/j_acwgEACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 169
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Book Description
Author: Leonid Filippovich Kozlov
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 169
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Book Description
Author: G. F. Anderson
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
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Author: Northrop Corporation Boundary Layer Research Section
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 432
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Book Description
At subsonic speeds, full length laminar flow and low drags were obtained up to high length Reynolds numbers on a thin straight, on a swept laminar suction wing and on a suction body of revolution. Moderately increased suction rates in the most critical region of a straight and a swept laminar suction wing enabled full chord laminar flow in the presence of external sound. Theoretical investigatiions are concerned with nonlinear boundary layer oscillations and stability investigations (assuming small disturbances) of a supersonic laminar boundary layer on a flat plate up to high supersonic speeds as well as on a highly swept supersonic low drag suction wing of low wave drag. On a supersonic flat laminar suction plate with and without weak incident shock waves, extensive laminar flow and low equivalent drags were obtained at M = 3 up to length Reynolds numbers of 26 x 1000000. Further supersonic low drag suction experiments on a suction body of revolution, on a 36 degree supersonic yawing wing, as well as on a 72 degree supersonic yawing wing (swept behind the Mach cone) of low wave drag, are described. The latter wing showed full chord laminar flow with a subsonic type pressure distribution at M = 2 and R sub C approximately equal to 1000000. (Author).
Author: W. Wuest
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 26
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A theoretical investigation is made of the development of a laminar boundary layer behind a suction slot that is assumed to cut off part of the boundary layer without exerting any sink effect. The development, which is approximate, is based on the heat conduction equation. The heat conduction equation enters the analysis through a linearization of the Prandtl-Mises form of the boundary-layer equation.
Author: Werner C. Rheinboldt
Publisher:
ISBN:
Category : Boundary layer
Languages : en
Pages : 106
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Author: H. Schlichting
Publisher: BiblioGov
ISBN: 9781289078317
Category :
Languages : en
Pages : 90
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Book Description
Various ways were tried recently to decrease the friction drag of a body in a flow; they all employ influencing the boundary layer. One of them consists in keeping the boundary layer Laminar by suction; promising tests have been carried out. Since for large Reynolds numbers the friction drag of the laminar boundary layer is much lower than that of the turbulent boundary layer, a considerable saving in drag results from keeping the boundary layer laminar, even with the blower power required for suction taken into account. The boundary layer is kept laminar by suction in two ways: first, by reduction of the thickness of the boundary layer and second, by the fact that the suction changes the form of the velocity distribution so that it becomes more stable, in a manner similar to the change by a pressure drop. There by the critical Reynolds number of the boundary layer (USigma*/V) (sub crit) becomes considerably higher than for the case without suction. This latter circumstance takes full effect only if continuous suction is applied which one might visualize realized through a porous wall. Thus the suction quantities required for keeping the boundary layer laminar become so small that the suction must be regarded as a very promising auxiliary means for drag reduction.
Author: VI-CHENG LIU
Publisher:
ISBN:
Category :
Languages : en
Pages : 286
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