Euler Solutions of Supersonic Wing-body Interference at High Incidence Including Vortex Effects PDF Download
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Author: Jack Norman Nielsen Publisher: ISBN: Category : Aerodynamics, Supersonic Languages : en Pages : 108
Book Description
The purpose of this investigation was to demonstrate how the flow field about a supersonic wing-body combination can be calculated using the Euler equations when body vortices are present as well as separation vortices from the sharp leading edges of the wing panels. In order to start the calculations in the supersonic marching mode, it was necessary to develop solutions for cones with separated flow. Data on the separation line locations for circular cones were correlated to provide boundary conditions for this purpose. A series of calculations for a wing-body combination with delta wings at Mach numbers of 3, 4, and 5 and angles of attack up to 25 deg was made to demonstrate the feasibility of the use of the Euler equations to handle separated rotational flows. Some comparisons with experimental pressure distributions and fin load were made with good agreement. The Euler code was used to evaluate the accuracy of a panel method for calculating the wing-body pressure distributions as influenced by body vortices. (Author).
Author: Jack Norman Nielsen Publisher: ISBN: Category : Aerodynamics, Supersonic Languages : en Pages : 108
Book Description
The purpose of this investigation was to demonstrate how the flow field about a supersonic wing-body combination can be calculated using the Euler equations when body vortices are present as well as separation vortices from the sharp leading edges of the wing panels. In order to start the calculations in the supersonic marching mode, it was necessary to develop solutions for cones with separated flow. Data on the separation line locations for circular cones were correlated to provide boundary conditions for this purpose. A series of calculations for a wing-body combination with delta wings at Mach numbers of 3, 4, and 5 and angles of attack up to 25 deg was made to demonstrate the feasibility of the use of the Euler equations to handle separated rotational flows. Some comparisons with experimental pressure distributions and fin load were made with good agreement. The Euler code was used to evaluate the accuracy of a panel method for calculating the wing-body pressure distributions as influenced by body vortices. (Author).
Author: M.Y. Hussaini Publisher: Springer Science & Business Media ISBN: 1461246784 Category : Science Languages : en Pages : 367
Book Description
From the astrophysical scale of a swirling spiral galaxy, through the geophysical scale of a hurricane, down to the subatomic scale of elementary particles, vortical motion and vortex dynamics have played a profound role in our understanding of the physical world. Kuchemann referred to vortex dynamics as "the sinews and muscles of fluid motion. " In order to update our understanding of vortex dominated flows, NASA Langley Research Center and the Institute for Computer Applications in Science and Engineering (ICASE) conducted a workshop during July 9-11, 1985. The subject was broadly divided into five overlapping topics vortex dynamics, vortex breakdown, massive separation, vortex shedding from sharp leading edges and conically separated flows. Some of the experts in each of these areas were invited to provide an overview of the subject. This volume is the proceedings of the workshop and contains the latest, theoretical, numerical, and experimental work in the above-mentioned areas. Leibovich, Widnall, Moore and Sirovich discussed topics on the fundamentals of vortex dynamics, while Keller and Hafez treated the problem of vortex break down phenomena; the contributions of Smith, Davis and LeBalleur were in the area of massive separation and inviscid-viscous interactions, while those of Cheng, Hoeijmakers and Munnan dealt with sharp-leading-edge vortex flows; and Fiddes and Marconi represented the category of conical separated flows.
Author: Organisation du traité de l'Atlantique Nord. Groupe consultatif pour la recherche et le développement aérospatial Publisher: ISBN: 9789283504528 Category : Guided missiles Languages : en Pages : 758
Author: Jack Norman Nielsen
Author: Jack Norman Nielsen
Author: M.Y. Hussaini
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Author: Aga Myung Goodsell
Author: Organisation du traité de l'Atlantique Nord. Groupe consultatif pour la recherche et le développement aérospatial
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