Download or read book Two dimensional Turbulent Wake boundary Layer Mixing written by Leslie John Johnston and published by . This book was released on 1985 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Calculation of Three Dimensional Turbulent Wake boundary Layer Mixing Flows written by M. Nasrullah and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Growth of the Two Dimensional Mixing Layer from a Turbulent and Non Turbulent Boundary Layer written by F. K. Browand and published by . This book was released on 1978 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of the initial boundary layer upon the downstream growth of the turbulent mixing layer between two streams is studied experimentally. Two streams are studied experimentally. Two conditions are carefully documented--in one case the boundary layers at separation are laminar; in the other case one boundary layer is made turbulent with a trip wire. When the boundary layer is turbulent, the lateral length scale, theta, characterizing the thickness of the mixing region, grows more slowly. At 400-500 initial momentum thicknesses downstream, the growth rate relaxes toward--but does not meet--the growth rate of the untripped mixing layer. The lateral distributions of turbulence quantities, when scaled with the local lateral thickness, achieve the same form at distances beyond approximately 800 momentum thicknesses. (Author).
Download or read book Analysis of Turbulent Boundary Layers written by Tuncer Cebeci and published by Elsevier. This book was released on 2012-12-02 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of Turbulent Boundary Layers focuses on turbulent flows meeting the requirements for the boundary-layer or thin-shear-layer approximations. Its approach is devising relatively fundamental, and often subtle, empirical engineering correlations, which are then introduced into various forms of describing equations for final solution. After introducing the topic on turbulence, the book examines the conservation equations for compressible turbulent flows, boundary-layer equations, and general behavior of turbulent boundary layers. The latter chapters describe the CS method for calculating two-dimensional and axisymmetric laminar and turbulent boundary layers. This book will be useful to readers who have advanced knowledge in fluid mechanics, especially to engineers who study the important problems of design.
Download or read book Influence of Initial Boundary Layer on the Two Dimensional Turbulent Mixing of a Single Stream written by R. C. Bauer and published by . This book was released on 1971 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: An integral method is presented for estimating the influence of an initial boundary layer on the development of a two-dimensional, isobaric, turbulent, free shear layer. The basic equation is derived by applying the principle that, at any streamwise station along the free shear layer, the momentum of the entrained flow equals the total axial turbulent shear force acting along the dividing streamline. This equation is solved using a single parameter family of velocity profiles derived by Korst and Prandtl's mixing length concept for turbulent shear stress. The theory involves one empirical constant which was evaluated using Tollmien's experimental data for incompressible, turbulent mixing. The theory is verified by comparing with experimental data for free-stream Mach numbers up to 6.4. (Author).
Download or read book Turbulent Mixing in Nonreactive and Reactive Flows written by S. Murthy and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulence, mixing and the mutual interaction of turbulence and chemistry continue to remain perplexing and impregnable in the fron tiers of fluid mechanics. The past ten years have brought enormous advances in computers and computational techniques on the one hand and in measurements and data processing on the other. The impact of such capabilities has led to a revolution both in the understanding of the structure of turbulence as well as in the predictive methods for application in technology. The early ideas on turbulence being an array of complicated phenomena and having some form of reasonably strong coherent struc ture have become well substantiated in recent experimental work. We are still at the very beginning of understanding all of the aspects of such coherence and of the possibilities of incorporating such structure into the analytical models for even those cases where the thin shear layer approximation may be valid. Nevertheless a distinguished body of "eddy chasers" has come into existence. The structure of mixing layers which has been studied for some years in terms of correlations and spectral analysis is also getting better understood. Both probability concepts such as intermittency and conditional sampling as well as the concept of large scale structure and the associated strain seem to indicate possibilities of distinguishing and synthesizing 'engulfment' and molecular mixing.
Download or read book Two dimensional Turbulent Mixing Between Streams Considering the Effects of Initial Boundary Layer written by Arseny A. Essen and published by . This book was released on 1964 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulence and Coherent Structures written by O. Métais and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 612 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last 25 years, one of the most striking advances in Fluid Mecha nics was certainly the discovery of coherent structures in turbulence: lab oratory experiments and numerical simulations have shown that most turbulent flows exhibit both spatially-organized large-scale structures and disorganized motions, generally at smaller scales. The develop ment of new measurement and visualization techniques have allowed a more precise characterization and investigation of these structures in the laboratory. Thanks to the unprecedented increase of computer power and to the development of efficient interactive three-dimensional colour graphics, computational fluid dynamicists can explore the still myste rious world of turbulence. However, many problems remain unsolved concerning the origin of these structures, their dynamics, and their in teraction with the disorganized motions. In this book will be found the latest results of experimentalists, theoreticians and numerical modellers interested in these topics. These coherent structures may appear on airplane wings or slender bodies, mixing layers, jets, wakes or boundary-layers. In free-shear flows and in boundary layers, the results presented here highlight the intense three-dimensional character of the vortices. The two-dimensional large scale eddies are very sensitive to three-dimensional perturbations, whose amplification leads to the formation of three-dimensional coherent vorti cal structures, such as streamwise, hairpin or horseshoe vortex filaments. This book focuses on modern aspects of turbulence study. Relations between turbulence theory and optimal control theory in mathematics are discussed. This may have important applications with regard to, e. g. , numerical weather forecasting.
Download or read book Additional Two dimensional Wake and Jet like Flows written by James Edward Danberg and published by . This book was released on 1974 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: A number of authors have described wake and jet-like similarity solutions to the steady, two-dimensional, laminar, incompressible boundary layer equations. These solutions are shown to be a subset of a larger class of solutions including those with algebraic velocity profile functions near the outer edge of the boundary layer. In addition to describing the relationship between solutions, the limiting cases are described in which the pressure gradient parameter becomes infinite and where the wall and edge velocities are equal. (Author).
Download or read book Measurements in the Boundary Layer of a Yawed Wing written by A. M. Kuethe and published by . This book was released on 1949 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the velocity profiles in the turbulent boundary layer on the upper surface of a wing of semielliptical plan form at an angle of yaw of 25 deg and angles of attack of 12 deg and 14 deg are reported along with pressure distributions. These show considerable spanwise flow near the surface. The chordwise (velocity components inclined 25 deg to the main wind direction) and spanwise boundary layers were calculated. The chordwise velocity profiles are in good agreement with those obtained at the National Bureau of Standards on an unyawed airfoil shape.
Download or read book An Introduction To Turbulence written by Paul A. Libby and published by CRC Press. This book was released on 1996-10-01 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beginning with a description of turbulence, its various manifestations, and a brief history of study, this text also incorporates modern perspectives on turbulence. The text also covers such topics as intermittency and the resultant conditional sampling and averaging of turbulent flows, the role of large scale computation of the fundamental equations of fluid mechanics in providing information on variables, and asymptotic methods which are used to expose important features of turbulent flows. Meaningful exercises are included in every section.
Download or read book Turbulent Boundary Layer Separation from Smooth convex Surfaces in Supersonic Two dimensional Flow written by Robert Allan White and published by . This book was released on 1963 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mixing of a Stratified Fluid in a Two dimensional Turbulent Wake written by Edmund A. Prych and published by . This book was released on 1963 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Free Turbulent Mixing written by Philip Thomas Harsha and published by . This book was released on 1971 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Turbulent Boundary Layers written by Helmut E. Weber and published by . This book was released on 1979 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Development of a Two dimensional Constant Pressure Mixing Zone from an Initially Turbulent Boundary Layer written by Lawrence D. Peterson and published by . This book was released on 1971 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book R solution Du Probl me Des Couches Limites Turbullentes Compressibles Bidimensionnelles Au Moyen Des Mod les de Turbulence K e Et de Longueur de M lange Accrue written by M. Khalid and published by NRCC, Institute for Aerospace Research. This book was released on 1990 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
