Modeling Of Flow Transition Using An Intermittency Transport Equation
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Modeling Of Flow Transition Using An Intermittency Transport Equation
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Author : Y. B. Suzen
language : en
Publisher:
Release Date : 1999
Modeling Of Flow Transition Using An Intermittency Transport Equation written by Y. B. Suzen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with categories.
Modeling Of Flow Transition Using An Intermittency Transport Equation
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-03
Modeling Of Flow Transition Using An Intermittency Transport Equation written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-03 with categories.
A new transport equation for intermittency factor is proposed to model transitional flows. The intermittent behavior of the transitional flows is incorporated into the computations by modifying the eddy viscosity, mu(sub t), obtainable from a turbulence model, with the intermittency factor, gamma: mu(sub t, sup *) = gamma.mu(sub t). In this paper, Menter's SST model (Menter, 1994) is employed to compute mu(sub t) and other turbulent quantities. The proposed intermittency transport equation can be considered as a blending of two models - Steelant and Dick (1996) and Cho and Chung (1992). The former was proposed for near-wall flows and was designed to reproduce the streamwise variation of the intermittency factor in the transition zone following Dhawan and Narasimha correlation (Dhawan and Narasimha, 1958) and the latter was proposed for free shear flows and was used to provide a realistic cross-stream variation of the intermittency profile. The new model was used to predict the T3 series experiments assembled by Savill (1993a, 1993b) including flows with different freestream turbulence intensities and two pressure-gradient cases. For all test cases good agreements between the computed results and the experimental data are observed.Suzen, Y. B. and Huang, P. G.Glenn Research CenterINTERMITTENCY; TRANSPORT THEORY; EDDY VISCOSITY; TURBULENT FLOW; TURBULENCE MODELS; NAVIER-STOKES EQUATION; PRESSURE GRADIENTS; SHEAR FLOW; WALL FLOW; TRANSITION FLOW
Boundary Layer Flows
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Author : Vallampati Ramachandra Prasad
language : en
Publisher:
Release Date : 2020
Boundary Layer Flows written by Vallampati Ramachandra Prasad and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with Boundary layer categories.
Advances In Transitional Flow Modeling
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Author : Chunhua Sheng
language : en
Publisher: Springer
Release Date : 2016-11-26
Advances In Transitional Flow Modeling written by Chunhua Sheng and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-11-26 with Technology & Engineering categories.
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.
Cfd Compatible Rans Les Modeling Of Transitional And Separated Flows
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Author : Jiakuan Xu
language : en
Publisher: Springer Nature
Release Date : 2025-07-01
Cfd Compatible Rans Les Modeling Of Transitional And Separated Flows written by Jiakuan Xu and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-07-01 with Technology & Engineering categories.
This book investigates in detail boundary layer transition-turbulence modeling methods, which is a hot research topic in fluid mechanics and aerospace engineering. It introduces detailed physical model construction ideas and extensive calculation examples, which will enable readers to learn how to choose the correct model to use, understand the whole process of physical model construction, and learn how to develop new models. Studies on transition-turbulence models have attracted engineers and scientists from various disciplines, such as aerospace engineering, wind energy, ocean engineering and engine engineering. Pursuing a holistic approach, the book establishes several classical/representative transition-turbulence models for engine internal and external flows, while emphasizing the importance of PDE transport equation establishment and local computation methods for non-local variables. It is intended for post-graduate students and researchers who are interested in computational fluid dynamics and transition-turbulence.modeling or aerodynamic shape design (laminar flow design and control).
The Proceedings Of The 2018 Asia Pacific International Symposium On Aerospace Technology Apisat 2018
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Author : Xinguo Zhang
language : en
Publisher: Springer
Release Date : 2019-06-08
The Proceedings Of The 2018 Asia Pacific International Symposium On Aerospace Technology Apisat 2018 written by Xinguo Zhang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-08 with Technology & Engineering categories.
This book is a compilation of peer-reviewed papers from the 2018 Asia-Pacific International Symposium on Aerospace Technology (APISAT 2018). The symposium is a common endeavour between the four national aerospace societies in China, Australia, Korea and Japan, namely, the Chinese Society of Aeronautics and Astronautics (CSAA), Royal Aeronautical Society Australian Division (RAeS Australian Division), the Korean Society for Aeronautical and Space Sciences (KSAS) and the Japan Society for Aeronautical and Space Sciences (JSASS). APISAT is an annual event initiated in 2009 to provide an opportunity for researchers and engineers from Asia-Pacific countries to discuss current and future advanced topics in aeronautical and space engineering.
Modeling Of The Heat Transfer In Bypass Transitional Boundary Layer Flows
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Author : Frederick F. Simon
language : en
Publisher:
Release Date : 1991
Modeling Of The Heat Transfer In Bypass Transitional Boundary Layer Flows written by Frederick F. Simon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Boundary layer categories.
Modelling Turbulence In Engineering And The Environment
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Author : Kemal Hanjalić
language : en
Publisher: Cambridge University Press
Release Date : 2011-10-20
Modelling Turbulence In Engineering And The Environment written by Kemal Hanjalić and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-10-20 with Science categories.
A comprehensive account of advanced RANS turbulence models including numerous applications to complex flows in engineering and the environment.
Elements Of Transitional Boundary Layer Flowlements
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Author : Robert Edward Mayle
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2018
Elements Of Transitional Boundary Layer Flowlements written by Robert Edward Mayle and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Science categories.
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.
An Introduction To Flapping Wing Aerodynamics
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Author : Wei Shyy
language : en
Publisher: Cambridge University Press
Release Date : 2013-08-19
An Introduction To Flapping Wing Aerodynamics written by Wei Shyy and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-08-19 with Science categories.
For anyone interested in the aerodynamics, structural dynamics and flight dynamics of small birds, bats, insects and air vehicles (MAVs).