A Transition Model for High Speed Flow PDF Download
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Author: Eric Scott Warren
Publisher:
ISBN:
Category :
Languages : en
Pages : 172
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Book Description
Author: Eric Scott Warren
Publisher:
ISBN:
Category :
Languages : en
Pages : 172
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Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 52
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Book Description
Author: David C. Wilcox
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 46
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 48
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Book Description
This report summarizes research conducted during the past year whose aim is to develop and test an accurate and efficient method for describing boundary-layer development in the transition region. A low-Reynolds-number version of the Wilcox k-w model has been postulated and tested against experimental data for 10 fully turbulent boundary layers and for more than 20 transitional cases. Overall discrepancies between theory and experiment are smaller than those for simpler correlations designed for use with algebraic turbulence models. Singular perturbation analysis of the compressible viscous sublayer and defect layer has been initiated with some interesting preliminary results. Some progress has been made toward eliminating the k-w model's sensitivity to the freestream boundary condition on w ... Transition, Turbulence modeling, Hypersonics, Computational fluid dynamics.
Author: Vallampati Ramachandra Prasad
Publisher: BoD – Books on Demand
ISBN: 1839681853
Category : Mathematics
Languages : en
Pages : 236
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Book Description
Written by experts in the field, this book, "Boundary Layer Flows - Theory, Applications, and Numerical Methods" provides readers with the opportunity to explore its theoretical and experimental studies and their importance to the nonlinear theory of boundary layer flows, the theory of heat and mass transfer, and the dynamics of fluid. With the theory's importance for a wide variety of applications, applied mathematicians, scientists, and engineers - especially those in fluid dynamics - along with engineers of aeronautics, will undoubtedly welcome this authoritative, up-to-date book.
Author: Ames Research Center
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 200
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 46
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Book Description
Author: Frank M. White
Publisher:
ISBN: 9780071009959
Category : Viscous flow
Languages : en
Pages : 614
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Book Description
Designed for higher level courses in viscous fluid flow, this text presents a comprehensive treatment of the subject. This revision retains the approach and organization for which the first edition has been highly regarded, while bringing the material completely up-to-date. It contains new information on the latest technological advances and includes many more applications, thoroughly updated problems and exercises.
Author: M. Hallbäck
Publisher: Springer Science & Business Media
ISBN: 9401586667
Category : Science
Languages : en
Pages : 379
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Book Description
The aim of this book is to give, within a single volume, an introduction to the fields of turbulence modelling and transition-to-turbulence prediction, and to provide the physical background for today's modelling approaches in these problem areas as well as giving a flavour of advanced use of prediction methods. Turbulence modelling approaches, ranging from single-point models based on the eddy-viscosity concept and the Reynolds stress transport equations (Chapters 3,4,5), to large-eddy simulation (LES) techniques (Ch. 7), are covered. The foundations of hydrodynamical stability and transition are presented (Ch. 2) along with transition prediction methods based on single-point closures (Ch. 6), LES techniques (Ch. 7) and the parabolized stability equations (Ch. 8). The book addresses engineers and researchers, in industry or academia, who are entering into the fields of turbulence or transition modelling research or need to apply turbulence or transition prediction methods in their work.
Author: √únver Kaynak
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
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Book Description
Transition modeling as applied to CFD methods has followed certain line of evolution starting from simple linear stability methods to almost or fully predictive methods such as LES and DNS. One pragmatic approach among these methods, such as the local correlation-based transition modeling approach, is gaining more popularity due to its straightforward incorporation into RANS solvers. Such models are based on blending the laminar and turbulent regions of the flow field by introducing intermittency equations into the turbulence equations. Menter et al. pioneered this approach by their two-equation γ-Reθ intermittency equation model that was incorporated into the k-ω SST turbulence model that results in a total of four equations. Later, a range of various three-equation models was developed for super-/hypersonic flow applications. However, striking the idea that the Reθ-equation was rather redundant, Menter produced a novel one-equation intermittency transport γ-equation model. In this report, yet another recently introduced transition model called as the Bas-Cakmakcioglu (B-C) algebraic model is elaborated. In this model, an algebraic γ-function, rather than the intermittency transport γ-equation, is incorporated into the one-equation Spalart-Allmaras turbulence model. Using the present B-C model, a number of two-dimensional test cases and three-dimensional test cases were simulated with quite successful results.
