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Author:
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Category :
Languages : en
Pages : 60
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 60
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721032600
Category :
Languages : en
Pages : 58
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Book Description
Four turbulence models are described and evaluated for transonic flows over the High-Speed Research/industry baseline configuration known as Reference H by using the thin-layer, upwind, Navier-Stokes solver known as CFL3D. The turbulence models studied are the equilibrium model of Baldwin-Lomax (B-L) with the Degani-Schiff (D-S) modifications, the one-equation Baldwin-Barth (B-B) model, the one-equation Spalart-Allmaras (S-A) model, and Menter's two-equation Shear Stress Transport (SST) model. The flow conditions, which correspond to tests performed in the National Transonic Facility (NTF) at Langley Research Center, are a Mach number of 0.90 and a Reynolds number of 30 x 10 (exp. 6) based on mean aerodynamic chord for angles of attack of 1 deg., 5 deg., and 10 deg. The effects of grid topology and the representation of the actual wind tunnel model geometry are also investigated. Computed forces and surface pressures compare reasonably well with the experimental data for all four turbulence models.Rivers, Melissa B. and Wahls, Richard A.Langley Research CenterCOMPUTATIONAL FLUID DYNAMICS; COMPUTATIONAL GRIDS; NAVIER-STOKES EQUATION; TURBULENCE MODELS; TRANSONIC WIND TUNNELS; SUPERSONIC AIRCRAFT; APPLICATIONS PROGRAMS (COMPUTERS); WIND TUNNEL TESTS; BALDWIN-LOMAX TURBULENCE MODEL; ANGLE OF ATTACK; GRID GENERATION (MATHEMATICS); MATHEMATICAL MODELS; TOPOLOGY; SHEAR STRESS
Author: Richard M. Wood
Publisher:
ISBN:
Category : High-speed aeronautics
Languages : en
Pages : 354
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Author:
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ISBN:
Category : Astronautics
Languages : en
Pages : 182
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Author: Pierre Sagaut
Publisher: World Scientific
ISBN: 1848169876
Category : Science
Languages : en
Pages : 446
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Book Description
The book aims to provide the reader with an updated general presentation of multiscale/multiresolution approaches in turbulent flow simulations. All modern approaches (LES, hybrid RANS/LES, DES, SAS) are discussed and recast in a global comprehensive framework. Both theoretical features and practical implementation details are addressed. Some full scale applications are described, to provide the reader with relevant guidelines to facilitate a future use of these methods.
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 692
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Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1052
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Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 1638
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 122
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Author:
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ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 400
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