Download or read book Equilibrium turbulent boundary layers written by G. L. Mellor and published by . This book was released on 1963 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: A particular form for an effective or eddy viscosity is hypothesized and considered in conjunction with the boundary layer equations for cases where the pressure gradient parameter is held constant. Precise solutions are obtained for accelerating and decelerating flows in the range, beta infinity; the solutions span the complete boundary layer profile with the exception of the small viscous sublayer region. Comparison of the calculated velocity profiles with zero pressure gradient data and Clauser's and Stratford's decelerating flow data is excellent. For large values of beta the influence of the pressure gradient dominates the influence of the wall shear stress; defect profiles should then be presented in the form, U sub p, instead of U sub tau where U sub p is a pressure velocity and U sub tau is the conventional skin function velocity. (Author).

Download or read book Some Experiments on Equilibrium Turbulent Boundary Layers in Favorable Pressure Gradients written by H. J. Herring and published by . This book was released on 1963 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: A boundary layer wind tunnel in which an arbitrary negative pressure gradient could be developed was designed and built. The effects of selected pressure gradients on boundary layers grown on one of the walls of the tunnel were studied. It was possible to obtain equilibrium boundary layers of the type first suggested by Clauser, that is layers whose non-dimensional velocity defect distribution is invariant along the direction of flow. The velocity defect distributions for two such boundary layers were established, corresponding to values of B of -0.35 and -0.53, where B is Clauser's non-dimensional pressure gradient parameter. These velocity profiles are compared with the profiles predicted by the Mellor-Gibson theory. The agreement between the two is very good. (Author).

Download or read book Turbulent Shear Flows 5 written by Franz Durst and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first four symposia in the series on turbulent shear flows have been held alternately in the United States and Europe with the first and third being held at universities in eastern and western States, respectively. Continuing this pattern, the Fifth Symposium on Turbulent Shear Flows was held at Cornell University, Ithaca, New York, in August 1985. The meeting brought together more than 250 participants from around the world to present the results of new research on turbulent shear flows. It also provided a forum for lively discussions on the implications (practical or academic) of some of the papers. Nearly 100 formal papers and about 20 shorter communications in open forums were presented. In all the areas covered, the meeting helped to underline the vitality of current research into turbulent shear flows whether in experimental, theoretical or numerical studies. The present volume contains 25 of the original symposium presentations. All have been further reviewed and edited and several have been considerably extended since their first presentation. The editors believe that the selection provides papers of archival value that, at the same time, give a representative statement of current research in the four areas covered by this book: - Homogeneous and Simple Flows - Free Flows - Wall Flows - Reacting Flows Each of these sections begins with an introductory article by a distinguished worker in the field.

Download or read book IUTAM Symposium on Computational Physics and New Perspectives in Turbulence written by Yukio Kaneda and published by Springer Science & Business Media. This book was released on 2007-12-26 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the proceedings of the IUTAM Symposium on Computational Physics and New Perspectives in Turbulence, held at Nagoya University, Nagoya, Japan, in September 2006. With special emphasis given to fundamental aspects of the physics of turbulence, coverage includes experimental approaches to fundamental problems in turbulence, turbulence modeling and numerical methods, and geophysical and astrophysical turbulence.

Download or read book The Structure of Equilibrium Turbulent Boundary Layers written by Sandy Fong and published by . This book was released on 1995 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Effect of Pressure Gradient on the Eddy Viscosity and Mixing Length for Incompressible Equilibrium Turbulent Boundary Layers written by W. J. Glowacki and published by . This book was released on 1974 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Shear stress, eddy viscosity, and mixing length distributions corresponding to five two-dimensional, incompressible equilibrium turbulent boundary layers were calculated by substituting measured velocity profile data into the governing equations. The five flows cover the range from moderate adverse pressure gradient to strong favorable pressure gradient. (Modified author abstract).

Download or read book The Effect of Pressure Gradient on the Structure of an Equilibrium Turbulent Boundary Layer written by Ting-Kwo Lei and published by . This book was released on 1993 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On the Establishment of Equilibrium Turbulent Boundary Layers with a Pressure Gradient in the National Diagnostic Facility written by Stelios N. Symeonides and published by . This book was released on 1997 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Equilibrium Turbulent Boundary Layer written by G. L. Mellor and published by . This book was released on 1963 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Entrainment in Equilibrium and Non equilibrium Turbulent Boundary Layers written by and published by . This book was released on 1969 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Turbulent Boundary Layers Subjected to Internally Or Externally Imposed Time Dependent Transverse Shear written by and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both experimental and modeling efforts are aimed at understanding the non-equilibrium effects introduced by a 2-D turbulent boundary layer suddenly subjected to transverse wall shear. A new turbulence model has been developed which can be used to predict the Reynolds stress development in 3-D shear flows. This theta-l model allows for a misalignment to occur between the stress and strain as observed in 3-D turbulent boundary layers. The misalignment is determined by accounting for the flow history through solving a transport equation (first derived by Bradshaw, 1971) for theta. Excellent agreement is observed for both mean profiles and Reynolds stress when compared with the experiments of Driver and Johnston (1990). For the experiments, a 36' long 18" diameter cylinder surface is used. One section of the model is designed to rotate about its axis; thereby, introducing non-equilibrium effects into the developing 2-D boundary layer. Stereoscopic PIV is being used to acquire all three components of the velocity in both the x-y and x-z planes. Comparison of the detailed experimental results with subsequent modifications of the modeling should result in improved non-equilibrium turbulence prediction capabilities.

Download or read book Turbulent Boundary Layers in Adverse Pressure Gradients written by Francis H. Clauser and published by . This book was released on 1953 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Accelerated Equilibrium Turbulent Boundary Layers by P Case written by P. Case and published by . This book was released on 1970 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Method for Predicting Compressible Turbulent Boundary Layers in Adverse Pressure Gradients written by Shimer Zane Pinckney and published by . This book was released on 1971 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Equilibrium Turbulence for a Hypersonic Boundary Layer at Nonadiabatic Wall Conditions written by Cindy W. Albertson and published by . This book was released on 1989 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Turbulent Boundary Layers in Strong Adverse Pressure Gradients written by W. H. Schofield and published by . This book was released on 1980 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new analysis of equilibrium boundary layers based on the Schoheld and Perry defect law for flow in moderate to strong adverse pressure gradient is presented. The conditions derived for self-preserving or precise equilibrium boundary layers differ from those given by previous analyses based on the usual velocity defect law. It is shown that nine observed boundary layers on smooth walls conform to these new conditions for equilibrium flow. As the analytical expression for the Schofield and Perry defect law does not vary with pressure gradient an explicit expression for the shear stress profile in any equilibrium layer can be derived. Predicted shear stress profiles show good agreement with experimental data. Limits for the flow parameters within which equilibrium boundary layers can exist are derived and it is shown that observed boundary layers fall within these limits. Results by previous workers are shown to be consistent with these limits.

Download or read book Analysis of Turbulent Flows with Computer Programs written by Tuncer Cebeci and published by Elsevier. This book was released on 2004 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modelling and Computation of Turbulent Flows has been written by one of the most prolific authors in the field of CFD. Professor of aerodynamics at SUPAERO and director of DMAE at ONERA, the author calls on both his academic and industrial experience when presenting this work. The field of CFD is strongly represented by the following corporate companies; Boeing; Airbus; Thales; United Technologies and General Electric, government bodies and academic institutions also have a strong interest in this exciting field. Each chapter has also been specifically constructed to constitute as an advanced textbook for PhD candidates working in the field of CFD, making this book essential reading for researchers, practitioners in industry and MSc and MEng students. * A broad overview of the development and application of Computational Fluid Dynamics (CFD), with real applications to industry * A Free CD-Rom which contains computer program's suitable for solving non-linear equations which arise in modeling turbulent flows * Professor Cebeci has published over 200 technical papers and 14 books, a world authority in the field of CFD