Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 60
Book Description
Turbulence Model Comparisons for a High-Speed Aircraft
Author: Turbulence Model Comparisons for a High-Speed Aircraft
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781721032600
Category :
Languages : en
Pages : 58
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
First NASA/Industry High-Speed Research Configuration Aerodynamics Workshop
Author: Richard M. WoodPublisher:
ISBN:
Category : High-speed aeronautics
Languages : en
Pages : 354
Book Description
NASA Langley Scientific and Technical Information Output: 1999
Author: Multiscale and Multiresolution Approaches in Turbulence
Author: Pierre SagautPublisher: World Scientific
ISBN: 1848169876
Category : Science
Languages : en
Pages : 446
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.
Scientific and Technical Aerospace Reports
Author: Applied Mechanics Reviews
Author: NAS Technical Summaries
Author: Progress in Computational Flow-Structure Interaction
Author: Werner HaasePublisher: Springer Science & Business Media
ISBN: 9783540439028
Category : Mathematics
Languages : en
Pages : 392
Book Description
This volume contains results gained from the EU-funded, 4th Framework project, UNSI (Unsteady Viscous Flows in the Context of Fluid-Structure Interaction). 15 European organisations, industry, research, and universities, have collaborated on the topic of non-linear, static and dynamic aeroelasticity applications with some special emphasis on the improvement of CFD methods applied to unsteady flow. Hence, the book is split into five main parts. Presented are a project description (with points of contact for the interested reader), summaries of work performed by each partner, summaries of work carried out in the work tasks, an application-oriented synthesis, and last but not least a section with conclusions and lessons learnt.
Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1632
Book Description