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Author : D. Arnal
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Recent Advances in Theoretical Methods for Laminar-turbulent Transition Prediction written by D. Arnal and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Siegfried Wagner
Publisher : Springer
ISBN 13 : 9783642073458
Total Pages : 324 pages
Book Rating : 4.0/5 (734 download)
Download or read book Recent Results in Laminar-Turbulent Transition written by Siegfried Wagner and published by Springer. This book was released on 2010-12-15 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 24 papers presented at the international concluding colloquium of the German priority programme (DFG-Verbundschwerpunktprogramm) "Transition", held in April 2002 in Stuttgart. The unique and successful programme ran six years, starting April 1996, and was sponsored mainly by the Deutsche Forschungsgemeinschaft, DFG, but also by the Deutsches Zentrum für Luft-und Raumfahrt, DLR, the Physikalisch-Technische Bundesanstalt Braunschweig, PTB, and Airbus Deutschland. The papers summarise the results of the programme and cover transition mechanisms, transition prediction, transition control, natural transition and measurement techniques, transition - turbulence - separation, and visualisation issues. Three invited papers are devoted to mechanisms of turbulence production, to a general framework of stability, receptivity and control, and a forcing model for receptivity analysis. Almost every transition topic arising in subsonic and transonic flow is covered.
Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France)
Publisher :
ISBN 13 :
Total Pages : 382 pages
Book Rating : 4.:/5 (227 download)
Download or read book Laminar-Turbulent Transition written by ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (France) and published by . This book was released on 1977 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Symposium provided a forum for an exchange of views and an assessment of the state of the art in the field of laminar-transitional flows. Recent advances in laminar stability theory and prediction methods for laminar-transitional flows were presented. The meeting indicated that many of the complicated transitional flow processes and mechanisms are not well understood and are not amenable to calculation. There still remains a basic, fundamental limitation of our knowledge and mathematical ability to describe and compute the fluid mechanical processes, except for simplified cases. The difficulty of obtaining meaningful, consistent, accurate experimental data, free from adverse tunnel environment effects, was expressed. To enhance their usefulness, all experimental studies should contain adequate documentation of all local and free-stream test conditions and parameters. There is a basic need for a complementary dialogue to be established between the experimentalist and the theoretician. A fruitful exchange between the foremost researchers in the field identified some critical areas for future theoretical and experimental studies. (Author).
Author : A. Hanifi
Publisher : Springer Science & Business Media
ISBN 13 : 9401145156
Total Pages : 540 pages
Book Rating : 4.4/5 (11 download)
Download or read book Transition, Turbulence and Combustion Modelling written by A. Hanifi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: This single-volume work gives an introduction to the fields of transition, turbulence, and combustion modeling of compressible flows and provides the physical background for today’s modeling approaches in these fields. It presents basic equations and discusses fundamental aspects of hydrodynamical instability.
Author : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Publisher :
ISBN 13 :
Total Pages : 414 pages
Book Rating : 4.3/5 (243 download)
Download or read book Laminar-turbulent Transition written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1977 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shaun Ransom Harris
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (133 download)
Download or read book Some Numerical Considerations for Prediction of Laminar-turbulent Transition in Boundary Layers written by Shaun Ransom Harris and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Disturbances in an incompressible laminar boundary layer can grow over time and lead to the transition to turbulence. This laminar to turbulent process can be computationally expensive for modern CFD solvers and has led to the emergence of streamwise marching techniques that accurately compute the disturbance growth in the laminar and transition regions at a fraction of the cost. The common streamwise marching techniques in slowly evolving shear flows, however, retain some undesirable limitations motivating the development of a novel marching algorithm presented here and known as the Spatial Perturbation Equations (SPE). The SPE couples the marching of boundary layer equations along with the perturbation equations. This coupling results in an accurate capturing of the mean flow distortion for high-amplitude disturbances; which existing methods have under-predicted. The SPE is also able to capture the growth of linear, multi-modal, and nonlinear growth of time-periodic disturbances once the projection operator is introduced to stabilize the marching procedure. The SPE is able to accurately capture the linear evolution of a Tollmien-Schlichting (TS) wave and the multi-modal transient growth for time-periodic disturbances. Nonlinear interaction is also observed for high-magnitude TS waves. For compressible flow, the laminar to turbulent process also has a major impact on many engineering quantities of interest such as surface heating in hypersonic atmospheric flight. In high-speed atmospheric flight, the so called Mack's second mode disturbances are observed as a common route of transition. Capturing the evolution and growth of the mode can be difficult when numerical dissipation from shock capturing techniques are introduced. Linear stability theory (LST) and streamwise marching techniques are used to estimate the growth of the second mode and compare the growth as predicted from direct numerical simulations. However, the choice of inflow conditions and shock-capturing techniques can have a major influence on the predicted growth. The effect of numerical dissipation is examined and explained for various shock-capturing methods and inflow conditions.
Author : Peter S. Bernard
Publisher : Wiley
ISBN 13 : 0471275387
Total Pages : 512 pages
Book Rating : 4.4/5 (712 download)
Download or read book Turbulent Flow written by Peter S. Bernard and published by Wiley. This book was released on 2002-11-14 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides unique coverage of the prediction and experimentation necessary for making predictions. Covers computational fluid dynamics and its relationship to direct numerical simulation used throughout the industry. Covers vortex methods developed to calculate and evaluate turbulent flows. Includes chapters on the state-of-the-art applications of research such as control of turbulence.
Author : Reda R. Mankbadi
Publisher : Springer Science & Business Media
ISBN 13 : 1461527449
Total Pages : 386 pages
Book Rating : 4.4/5 (615 download)
Download or read book Transition, Turbulence, and Noise written by Reda R. Mankbadi and published by Springer Science & Business Media. This book was released on 2013-11-27 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence takes place in most flow situations whethertheyoccur naturally or in technological systems. Therefore, considerable effort is being expended in an attempt to understand the phenomenon of turbulence. The recent discovery ofcoherent structure in turbulent shear flows and the modem developments in computer capabilities have revolutionized research work in turbulence. There is a strong evidence that the coherent structure in turbulent shear flows is reminiscent of nonlinear stability waves. As such, the interest in nonlinear stability waves has increased not only for the understandingofthe latterstages of the laminar-turbulent transition process, but also for understanding the coherent structures in turbulent flows. Also. the advances in computers have made direct numerical simulation possible at Low-Reynolds numbers and large-eddy simulation possible at high Reynolds numbers. This made first-principles prediction of turbulence-generated noise feasible. Therefore, this book aims at presenting a graduate-level introductory study of turbulence while accounting for such recent views of concern to researchers. This book is an outgrowth oflecture notes on the subject offered to graduate students in engineering. The book should be of interest to research engineers and graduatestudents in science and engineering. The theoretical basis presented is sufficient not only for studying the specialized literature on turbulence but also for theoretical investigations on the subject.
Author :
Publisher :
ISBN 13 :
Total Pages : 974 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tero Tuovinen
Publisher : Springer Nature
ISBN 13 : 3031611098
Total Pages : 289 pages
Book Rating : 4.0/5 (316 download)
Download or read book Advanced Computational Methods and Design for Greener Aviation written by Tero Tuovinen and published by Springer Nature. This book was released on with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ryoji Kobayashi
Publisher : Springer Science & Business Media
ISBN 13 : 3642797652
Total Pages : 541 pages
Book Rating : 4.6/5 (427 download)
Download or read book Laminar-Turbulent Transition written by Ryoji Kobayashi and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Union of Theoretical and Applied Mechanics (IUTAM) decided in 1992 to sponsor the fourth Symposium on Laminar-Turbulent Transition, Sendai/Japan, 1994. The objectives of the present Symposium were to deepen the fundamental knowledge of stability and laminar turbulent transition in three-dimensional and compressible flows and to contribute to recent developing technologies in the field. This Symposium followed the three previous IUTAM-Symposia (Stuttgart 1979, Novosibirsk 1984 and Toulouse 1989). The Scientific Committee selected two keynote lectures and 62 technical papers. The Symposium was held on the 5th to 9th of September, 1994, at the Sendai International Center in Sendai. The participants were 82 scientists from 10 countries. The keynote lectures have critically reviewed recent development of researches concerning the laminar-to-turbulent transition phenomena from the fundamental and the application aspects. Many papers presented were concerned about the detailed mechanism of the boundary layer transition (receptivity, secondary instability, turbulent spot and bypass transition). Particular emphasis was further placed on the transition of three-dimensional boundary layers on rotation systems and on swept wings. Attention was also given to compressible hypersonic flows.
Author : Konstantin Volkov
Publisher : BoD – Books on Demand
ISBN 13 : 9535133497
Total Pages : 252 pages
Book Rating : 4.5/5 (351 download)
Download or read book Turbulence Modelling Approaches written by Konstantin Volkov and published by BoD – Books on Demand. This book was released on 2017-07-26 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Accurate prediction of turbulent flows remains a challenging task despite considerable work in this area and the acceptance of CFD as a design tool. The quality of the CFD calculations of the flows in engineering applications strongly depends on the proper prediction of turbulence phenomena. Investigations of flow instability, heat transfer, skin friction, secondary flows, flow separation, and reattachment effects demand a reliable modelling and simulation of the turbulence, reliable methods, accurate programming, and robust working practices. The current scientific status of simulation of turbulent flows as well as some advances in computational techniques and practical applications of turbulence research is reviewed and considered in the book.
Author :
Publisher :
ISBN 13 :
Total Pages : 728 pages
Book Rating : 4.0/5 ( download)
Download or read book 36th Aerospace Sciences Meeting & Exhibit written by and published by . This book was released on 1998 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chunhua Sheng
Publisher : Springer
ISBN 13 : 3319325760
Total Pages : 140 pages
Book Rating : 4.3/5 (193 download)
Download or read book Advances in Transitional Flow Modeling written by Chunhua Sheng and published by Springer. This book was released on 2016-11-26 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Peter J. Schmid
Publisher : Springer Science & Business Media
ISBN 13 : 1461301858
Total Pages : 561 pages
Book Rating : 4.4/5 (613 download)
Download or read book Stability and Transition in Shear Flows written by Peter J. Schmid and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed look at some of the more modern issues of hydrodynamic stability, including transient growth, eigenvalue spectra, secondary instability. It presents analytical results and numerical simulations, linear and selected nonlinear stability methods. By including classical results as well as recent developments in the field of hydrodynamic stability and transition, the book can be used as a textbook for an introductory, graduate-level course in stability theory or for a special-topics fluids course. It is equally of value as a reference for researchers in the field of hydrodynamic stability theory or with an interest in recent developments in fluid dynamics. Stability theory has seen a rapid development over the past decade, this book includes such new developments as direct numerical simulations of transition to turbulence and linear analysis based on the initial-value problem.
Author : Norbert Kroll
Publisher : Springer Science & Business Media
ISBN 13 : 3642040934
Total Pages : 311 pages
Book Rating : 4.6/5 (42 download)
Download or read book MEGADESIGN and MegaOpt - German Initiatives for Aerodynamic Simulation and Optimization in Aircraft Design written by Norbert Kroll and published by Springer Science & Business Media. This book was released on 2009-11-18 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains results of the German CFD initiative MEGADESIGN which combines CFD development activities from DLR, universities and aircraft industry. Based on the DLR flow solvers FLOWer and TAU the main objectives of the four-years project is to ensure the prediction accuracy with a guaranteed error bandwidth for certain aircraft configurations at design conditions, to reduce the simulation turn-around time for large-scale applications significantly, to improve the reliability of the flow solvers for full aircraft configurations in the complete flight regime, to extend the flow solvers to allow for multidisciplinary simulations and to establish numerical shape optimization as a vital tool within the aircraft design process. This volume highlights recent improvements and enhancements of the flow solvers as well as new developments with respect to aerodynamic and multidisciplinary shape optimization. Improved numerical simulation capabilities are demonstrated by several industrial applications.
Author : Michel Deville
Publisher : Springer Science & Business Media
ISBN 13 : 3322898385
Total Pages : 406 pages
Book Rating : 4.3/5 (228 download)
Download or read book Computation of Three-Dimensional Complex Flows written by Michel Deville and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: Der Sammelband enthält Beiträge einer Tagung über die Simulation von dreidimensionalen Flüssigkeiten. Sie geben einen Überblick über den Stand des Wissens auf dem Gebiet der numerischen Simulation der Turbulenz, angewandt auf eine weite Spanne von Problemen wie Aerodynamik, Nicht-Newtonsche Flüssigkeiten, Konvektion.This volume contains the material presented at the IMACS-COST Conference on CFD, Three-Dimensional Complex Flows, held in Lausanne (Switzerland), September 13 - 15, 1995. It gives an overview of the current state of numerical simulation and turbulence modelling applied to a wide range of fluid flow problems such as an example aerodynamics, non-Newtonian flows, transition, thermal convection.
