Intermittency Equation for Transitional Flow

Intermittency Equation for Transitional Flow PDF Author: Ekachai Juntasaro
Publisher:
ISBN: 9783031039430
Category :
Languages : en
Pages : 0

Get Book Here

Book Description
This book provides the intermittency equation that is derived a priori. Since the intermittency equation is mathematically obtained, the resulting gamma transition model no longer requires any extra parameters and terms to explicitly account for free-stream turbulence and pressure gradient like the previous transition models. Instead, the present gamma transition model can naturally predict natural transition and effects of free-stream turbulence and pressure gradient on the transition process. Furthermore, the present gamma transition model requires much fewer model constants than the previous transition models. The book is beneficial for CFD researchers in industry and academia who confront modern complex applications involving simultaneously laminar, transitional and turbulent flow regimes, and ideally relevant to graduate students in applied physics, applied mathematics and engineering who are interested in the world of laminar-to-turbulent transition modeling in CFD, or would like to further advance more realistic transition models in the future.

Intermittency Equation for Transitional Flow

Intermittency Equation for Transitional Flow PDF Author: Ekachai Juntasaro
Publisher:
ISBN: 9783031039430
Category :
Languages : en
Pages : 0

Get Book Here

Book Description
This book provides the intermittency equation that is derived a priori. Since the intermittency equation is mathematically obtained, the resulting gamma transition model no longer requires any extra parameters and terms to explicitly account for free-stream turbulence and pressure gradient like the previous transition models. Instead, the present gamma transition model can naturally predict natural transition and effects of free-stream turbulence and pressure gradient on the transition process. Furthermore, the present gamma transition model requires much fewer model constants than the previous transition models. The book is beneficial for CFD researchers in industry and academia who confront modern complex applications involving simultaneously laminar, transitional and turbulent flow regimes, and ideally relevant to graduate students in applied physics, applied mathematics and engineering who are interested in the world of laminar-to-turbulent transition modeling in CFD, or would like to further advance more realistic transition models in the future.

Boundary Layer Flows

Boundary Layer Flows PDF Author: Vallampati Ramachandra Prasad
Publisher: BoD – Books on Demand
ISBN: 1839681853
Category : Mathematics
Languages : en
Pages : 236

Get Book Here

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.

Advances in Transitional Flow Modeling

Advances in Transitional Flow Modeling PDF Author: Chunhua Sheng
Publisher: Springer
ISBN: 3319325760
Category : Technology & Engineering
Languages : en
Pages : 140

Get Book Here

Book Description
This book provides a comprehensive description of numerical methods and validation processes for predicting transitional flows based on the Langtry–Menter local correlation-based transition model, integrated with both one-equation Spalart–Allmaras (S–A) and two-equation Shear Stress Transport (SST) turbulence models. A comparative study is presented to combine the respective merits of the two coupling methods in the context of predicting the boundary-layer transition phenomenon from fundamental benchmark flows to realistic helicopter rotors. The book will of interest to industrial practitioners working in aerodynamic design and the analysis of fixed-wing or rotary wing aircraft, while also offering advanced reading material for graduate students in the research areas of Computational Fluid Dynamics (CFD), turbulence modeling and related fields.

Intermittency in Turbulent Flows

Intermittency in Turbulent Flows PDF Author: J. C. Vassilicos
Publisher: Cambridge University Press
ISBN: 9780521792219
Category : Mathematics
Languages : en
Pages : 292

Get Book Here

Book Description
This volume was the product of a workshop held at the Newton Institute in Cambridge, and examines turbulence, intermittency, nonlinear dynamics and fluid mechanics.

Elements of Transitional Boundary-Layer Flowlements

Elements of Transitional Boundary-Layer Flowlements PDF Author: Robert Edward Mayle
Publisher: Logos Verlag Berlin GmbH
ISBN: 3832545980
Category : Science
Languages : en
Pages : 418

Get Book Here

Book Description
Second Enhanced Edition Suitable for advanced-level courses or an independent study in fluid mechanics, this text by an expert in the field provides the basic aspects of laminar-to-turbulent flow transition in boundary layers. Logically organized into three major parts, the book covers pre- and post-transitional flow, transitional flow, and several advanced topics in periodically disturbed transitional flow. Some of the subjects covered within the book include high-frequency unsteady laminar flow, turbulent flow, natural transition, bypass transition, turbulent spot theory, turbulent spot kinematics and production, correlations for the onset and rate of transition, global and conditional averaging, transitional flow models, wakeinduced transition, multimode transition, and separated-flow transition. Containing some 202 figures (all drawn by the author), 28 tables, 12 appendices, a supplement on tensors, and an extensive bibliography, the 415 page book provides a wealth of data and information about the subject.

Closure Strategies for Turbulent and Transitional Flows

Closure Strategies for Turbulent and Transitional Flows PDF Author: Brian Edward Launder
Publisher: Cambridge University Press
ISBN: 9780521792080
Category : Mathematics
Languages : en
Pages : 774

Get Book Here

Book Description
Publisher Description

All Fluid-flow-regimes Simulation Model for Internal Flows

All Fluid-flow-regimes Simulation Model for Internal Flows PDF Author: John P. Abraham
Publisher: Nova Novinka
ISBN: 9781611225037
Category : Laminar flow
Languages : en
Pages : 0

Get Book Here

Book Description
A multi-regime fluid flow model for internal flows has been applied to several pipe and duct problems. The investigated flow regimes and inter-regime transformations include fully laminar and fully turbulent, laminarisation, and turbulentisation. The model auto-selects both the flow regimes and the inter-regime transformations. This book studies both steady and unsteady flows, as well as flows in pipes and ducts of both axially unchanging cross section and axially enlarging cross section.

Bypass Transitional Flow Calculations Using a Navier-Stokes Solver and Two-Equation Models

Bypass Transitional Flow Calculations Using a Navier-Stokes Solver and Two-Equation Models PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 16

Get Book Here

Book Description


Low Reynolds Number

Low Reynolds Number PDF Author: Mustafa Serdar Genç
Publisher: BoD – Books on Demand
ISBN: 9535104926
Category : Science
Languages : en
Pages : 176

Get Book Here

Book Description
This book reports the latest development and trends in the low Re number aerodynamics, transition from laminar to turbulence, unsteady low Reynolds number flows, experimental studies, numerical transition modelling, control of low Re number flows, and MAV wing aerodynamics. The contributors to each chapter are fluid mechanics and aerodynamics scientists and engineers with strong expertise in their respective fields. As a whole, the studies presented here reveal important new directions toward the realization of applications of MAV and wind turbine blades.

Engineering Turbulence Modelling and Experiments - 3

Engineering Turbulence Modelling and Experiments - 3 PDF Author: G. Bergeles
Publisher: Newnes
ISBN: 0444600132
Category : Technology & Engineering
Languages : en
Pages : 932

Get Book Here

Book Description
This book presents and discussses new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. At present, turbulence is one of the key issues in tackling engineering flow problems. Powerful computers and numerical methods are now available for solving the flow equations, but the simulation of turbulence effects which are nearly always important in practice, is still in an unsatisfactory state and introduces considerable uncertainities in the accuracy of CFD calculations. These and other aspects of turbulence modelling and measurements are dealt with in detail by experts in the field. The resulting book is an up-to-date review of the most recent research in this exciting area.