Boundary Layer And Free Shear Flows PDF Download
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Author | : E. M. Greitzer |
Publisher | : Cambridge University Press |
Total Pages | : 739 |
Release | : 2007-02-26 |
Genre | : Technology & Engineering |
ISBN | : 1139451111 |
Download Internal Flow Book in PDF, ePub and Kindle
This book describes the analysis and behaviour of internal flows encountered in propulsion systems, fluid machinery (compressors, turbines and pumps) and ducts (diffusers, nozzles and combustion chambers). The focus is on phenomena that are important in setting the performance of a broad range of fluid devices. The authors show that even for complex processes one can learn a great deal about the behaviour of such devices from a clear understanding and rigorous use of basic principles. Throughout the book they illustrate theoretical principles by reference to technological applications. The strong emphasis on fundamentals, however, means that the ideas presented can be applied beyond internal flow to other types of fluid motion. The book equips students and practising engineers with a range of new analytical tools. These tools offer enhanced interpretation and application of both experimental measurements and the computational procedures that characterize modern fluids engineering.
Author | : Andrey V. Boiko |
Publisher | : Springer Science & Business Media |
Total Pages | : 286 |
Release | : 2011-09-15 |
Genre | : Science |
ISBN | : 9400724985 |
Download Physics of Transitional Shear Flows Book in PDF, ePub and Kindle
Starting from fundamentals of classical stability theory, an overview is given of the transition phenomena in subsonic, wall-bounded shear flows. At first, the consideration focuses on elementary small-amplitude velocity perturbations of laminar shear layers, i.e. instability waves, in the simplest canonical configurations of a plane channel flow and a flat-plate boundary layer. Then the linear stability problem is expanded to include the effects of pressure gradients, flow curvature, boundary-layer separation, wall compliance, etc. related to applications. Beyond the amplification of instability waves is the non-modal growth of local stationary and non-stationary shear flow perturbations which are discussed as well. The volume continues with the key aspect of the transition process, that is, receptivity of convectively unstable shear layers to external perturbations, summarizing main paths of the excitation of laminar flow disturbances. The remainder of the book addresses the instability phenomena found at late stages of transition. These include secondary instabilities and nonlinear features of boundary-layer perturbations that lead to the final breakdown to turbulence. Thus, the reader is provided with a step-by-step approach that covers the milestones and recent advances in the laminar-turbulent transition. Special aspects of instability and transition are discussed through the book and are intended for research scientists, while the main target of the book is the student in the fundamentals of fluid mechanics. Computational guides, recommended exercises, and PowerPoint multimedia notes based on results of real scientific experiments supplement the monograph. These are especially helpful for the neophyte to obtain a solid foundation in hydrodynamic stability. To access the supplementary material go to extras.springer.com and type in the ISBN for this volume.
Author | : Tuncer Cebeci |
Publisher | : Springer Science & Business Media |
Total Pages | : 497 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 1461239184 |
Download Physical and Computational Aspects of Convective Heat Transfer Book in PDF, ePub and Kindle
From the reviews: "The book has a broad and general coverage of both the mathematics and the numerical methods well suited for graduate students." Applied Mechanics Reviews #1 "This is a very well written book. The topics are developed with separate headings making the matter easily understandable. Computer programs are also included for many problems together with a separate chapter dealing with the application of computer programs to heat transfer problems. This enhances the utility of the book." Zentralblatt für Mathematik #1
Author | : A. A. R. Townsend |
Publisher | : Cambridge University Press |
Total Pages | : 450 |
Release | : 1976 |
Genre | : Mathematics |
ISBN | : 9780521298193 |
Download The Structure of Turbulent Shear Flow Book in PDF, ePub and Kindle
Develops a physical theory from the mass of experimental results, with revisions to reflect advances of recent years.
Author | : |
Publisher | : |
Total Pages | : 916 |
Release | : 1973 |
Genre | : Turbulence |
ISBN | : |
Download Free Turbulent Shear Flows Book in PDF, ePub and Kindle
Author | : Maurin Lopez |
Publisher | : |
Total Pages | : 105 |
Release | : 2014 |
Genre | : |
ISBN | : |
Download Prediction of Transitional Boundary Layers and Fully Turbulent Free Shear Flows, Using Reynolds Averaged Navier-Stokes Models Book in PDF, ePub and Kindle
One of the biggest unsolved problems of modern physics is the turbulence phenomena in fluid flow. The appearance of turbulence in a flow system is regularly determined by velocity and length scales of the system. If those scales are small the motion of the fluid is laminar, but at larger scales, disturbances appear and grow, leading the flow field to transition to a fully turbulent state. The prediction of transitional flow is critical for many complex fluid flow applications, such as aeronautical, aerospace, biomedical, automotive, chemical processing, heating and cooling systems, and meteorology. For example, in some cases the flow may remain laminar throughout a significant portion of a given domain, and fully turbulent simulations may produce results that can lead to inaccurate conclusions or inefficient design, due to an inability to resolve the details of the transition process. This work aims to develop, implement, and test a new model concept for the prediction of transitional flows using a linear eddy-viscosity RANS approach. The effects of transition are included through one additional transport equation for u2 as an alternative to the Laminar Kinetic Energy (LKE) framework. Here u2 is interpreted as the energy of fully turbulent, three-dimensional velocity fluctuations. This dissertation presents two new single-point, physics-based turbulence models based on the transitional methodology mentioned above. The first one uses an existing transitional model as a baseline which is modified to accurately capture the physics of fully turbulent free shear flows. The model formulation was tested over several boundary layer and free shear flow test cases. The simulations show accurate results, qualitatively equal to the baseline model on transitional boundary layer test cases, and substantially improved over the baseline model for free shear flows. The second model uses the SST k-w fully turbulent model and again the effects of transition are included through one additional transport equation for u2. An initial version of the model is presented here. Simplicity of the formulation and ease of extension to other baseline models are two potential advantages of the new method.
Author | : Alexander J. Smits |
Publisher | : Springer Science & Business Media |
Total Pages | : 418 |
Release | : 2006-05-11 |
Genre | : Science |
ISBN | : 0387263055 |
Download Turbulent Shear Layers in Supersonic Flow Book in PDF, ePub and Kindle
A good understanding of turbulent compressible flows is essential to the design and operation of high-speed vehicles. Such flows occur, for example, in the external flow over the surfaces of supersonic aircraft, and in the internal flow through the engines. Our ability to predict the aerodynamic lift, drag, propulsion and maneuverability of high-speed vehicles is crucially dependent on our knowledge of turbulent shear layers, and our understanding of their behavior in the presence of shock waves and regions of changing pressure. Turbulent Shear Layers in Supersonic Flow provides a comprehensive introduction to the field, and helps provide a basis for future work in this area. Wherever possible we use the available experimental work, and the results from numerical simulations to illustrate and develop a physical understanding of turbulent compressible flows.
Author | : G. Biswas |
Publisher | : CRC Press |
Total Pages | : 478 |
Release | : 2002 |
Genre | : Technology & Engineering |
ISBN | : 9780849310140 |
Download Turbulent Flows Book in PDF, ePub and Kindle
This book allows readers to tackle the challenges of turbulent flow problems with confidence. It covers the fundamentals of turbulence, various modeling approaches, and experimental studies. The fundamentals section includes isotropic turbulence and anistropic turbulence, turbulent flow dynamics, free shear layers, turbulent boundary layers and plumes. The modeling section focuses on topics such as eddy viscosity models, standard K-E Models, Direct Numerical Stimulation, Large Eddy Simulation, and their applications. The measurement of turbulent fluctuations experiments in isothermal and stratified turbulent flows are explored in the experimental methods section. Special topics include modeling of near wall turbulent flows, compressible turbulent flows, and more.
Author | : Wilhelm Schneider |
Publisher | : |
Total Pages | : 51 |
Release | : 1990 |
Genre | : |
ISBN | : |
Download Boundary layer theory of free turbulent shear flows Book in PDF, ePub and Kindle
Author | : F. Durst |
Publisher | : Springer Science & Business Media |
Total Pages | : 415 |
Release | : 2012-12-06 |
Genre | : Technology & Engineering |
ISBN | : 3642463959 |
Download Turbulent Shear Flows I Book in PDF, ePub and Kindle
The present book contains papers that have been selected from contributions to the First International Symposium on Turbulent Shear Flows which was held from the 18th to 20th April 1977 at The Pennsylvania State University, University Park, Pennsylvania, USA. Attend ees from close to 20 countries presented over 100 contributions at this meeting in which many aspects of the current activities in turbulence research were covered. Five topics received particular attention at the Symposium: Free Flows Wall Flows Recirculating Flows Developments in Reynolds Stress Closures New Directions in Modeling This is also reflected in the five chapters of this book with contributions from research workers from different countries. Each chapter covers the most valuable contributions of the conference to the particular chapter topic. Of course, there were many additional good con tributions to each subject at the meeting but the limitation imposed on the length of this volume required that a selection be made. The realization of the First International Symposium on Turbulent Shear Flows was p- sible by the general support of: U. S. Army Research Office U. S. Navy Research Office Continuing Education Center of The Pennsylvania State University The conference organization was carried out by the organizing committee consisting of: F. Durst, Universitat Karlsruhe, Karlsruhe, Fed. Rep. of Germany V. W. Goldschmidt, Purdue University, West Lafayette, Ind. , USA B. E. Launder, University of California, Davis, Calif. , USA F. W. Schmidt, Pennsylvania State University, University Park, Penna.