Download or read book Analysis of the Laminar and Turbulent Boundary Layer with Arbitrary Pressure Distribution written by Douglas E. Abbott and published by . This book was released on 1969 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report summarizes the results obtained from a three year analytical investigation of transient laminar and steady turbulent boundary layers for incompressible, two-dimensional flow. The analysis of these two classes of boundary-layer flows is based upon a solution of the appropriate partial differential equations by an approximation technique, the method of weighted residuals. Results were obtained for the transient laminar flow over a semi-infinite flat plate for both the boundary-layer equations and a modification to these equations which includes an axial diffusion term. For turbulent flows, several different boundary-layer prediction methods were developed by utilizing different turbulent shear stress models. In addition, a unified comparison of some thirty local and global shear stress models was made by comparing the predicted shear stress profiles with twelve carefully selected experimental studies taken from the literature. On the basis of this comparison, eleven different shear models were incorporated into computation schemes using the method of weighted residuals and the resulting calculations were compared in terms of computed values of the boundary-layer parameters. (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 An Investigation of the High Speed Turbulent Boundary Layer with Heat Transfer and Arbitrary Pressure Gradient Part 1 Summary Report written by and published by . This book was released on 1970 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Boundary Layer Theory written by Hermann Schlichting (Deceased) and published by Springer. This book was released on 2016-10-04 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of the near-legendary textbook by Schlichting and revised by Gersten presents a comprehensive overview of boundary-layer theory and its application to all areas of fluid mechanics, with particular emphasis on the flow past bodies (e.g. aircraft aerodynamics). The new edition features an updated reference list and over 100 additional changes throughout the book, reflecting the latest advances on the subject.

Download or read book Turbulent Flow and Boundary Layer Theory Selected Topics and Solved Problems written by Jafar Mehdi Hassan and published by Bentham Science Publishers. This book was released on 2021-08-11 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Turbulent Flow and Boundary Layer Theory: Selected Topics and Solved Problems explains fundamental concepts of turbulent flow with boundary layer analysis. A general introduction to turbulent flow familiarizes the reader with the mechanics of turbulence in fluid flow in both nature and engineering applications. The book also explains related concepts including transient flow, methods for controlling transients, turbulent models and dynamic equations for unsteady flow through closed conduits. The contents of the book are designed to help both students and teachers in carrying out turbulent flow analysis and solving problems in engineering and hydraulic applications. Key Features - all the basic concepts in turbulent flow are clearly identified and presented in a simple manner with illustrative and practical examples. - includes a self-contained approach to the subject, indicating prerequisite materials and information needed from courses. - each chapter also has a set of questions and problems to test the student’s power of comprehending the topics. - provides an exhaustive appendix on interesting examples Turbulent Flow and Boundary Layer Theory: Selected Topics and Solved Problems a useful textbook for students of engineering. It also serves as a quick reference for professionals, researchers and project consultants involved with processes that require turbulent flow and boundary layer methods analysis.

Download or read book Displacement Effect of the Laminar Boundary Layer and the Pressure Drag written by H. Görtler and published by . This book was released on 1951 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The displacement effect of the boundary layer on the outer frictionless flow is discussed for both steady and unsteady flows. The analysis is restricted to cases in which the potential flow pressure distribution remains valid for the boundary-layer claculation. Formulas are given for the dependence of the pressure drag, friction drag, and total drag of circular cylinders on the time from the start of motion for cases in which the velocity varies as a power of the time. Formulas for the location and for the time for the appearance of the separation point are given for two dimensional bodies of arbitrary shape.

Download or read book Calculation of Turbulent Boundary Layers with Heat Transfer and Pressure Gradient Utilizing a Compressibility Transformation written by J. Boccio and published by . This book was released on 1972 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of the incompressible turbulent boundary layer, developing under the combined effects of mass transfer and pressure gradient, is presented in this paper. A strip-integral method is employed whereby two of the three governing equations are obtained by integrating the combined momentum and continuity equation to 50 percent and 100 percent, respectively, of the boundary-layer height. The latter equation is the usual momentum-integral equation; the former equation requires specification of shear. Accordingly, Clauser's equilibrium eddy-viscosity law is assumed valid at this point. The third and final equation is obtained by specifying that Stevenson's velocity profiles apply throughout the domain of interest, from which a skin-friction law can be derived. Comparisons of the numerical results with the experiments of McQuaid, which include combined effects of variable pressure gradient and mass transfer, show good agreement.

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 Calculation of Compressible Nonadiabatic Boundary Layers in Laminar Transitional and Turbulent Flow by the Method of Integral Relations written by Gary D. Kuhn and published by . This book was released on 1971 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Compressible Laminar Boundary Layer with Heat Transfer and Arbitrary Pressure Gradient written by Clarence B. Cohen and published by . This book was released on 1955 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: WIth the resulting relations, methods are derived for the calculation of the tw-dimensional and axially symmetric laminar boundary layer with an arbitrary free-stream velocity distribution, Mach number, and surface temperature.

Download or read book Simplified Method for Calculation of Compressible Laminar Boundary Layer with Arbitrary Free stream Pressure Gradient written by George M. Low and published by . This book was released on 1951 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Karman-Polhausen method, as applied to compressible laminar boundary layers, is simplified by an analysis similar to the incompressible Holstein-Bohlen method. The analysis is carried out under the assumptions of a Prandtl number of 1, zero heat transfer, and a linear viscosity-temperature relation. Results are presented so that velocity and temperature profiles, momentum and displacement thicknesses, and wall shear stress can be calculated for flows over two-dimensional bodies with arbitrary free-stream velocity distributions. The results are also applicable to flows over three-dimensional bodies with axial symmetry through the use of Mangler's transformation.

Download or read book Unsteady Turbulent Boundary Layer Analysis written by and published by . This book was released on 1973 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Boundary Layer and Flow Control written by G. V. Lachmann and published by Elsevier. This book was released on 2014-05-12 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Boundary Layer and Flow Control: Its Principles and Application, Volume 2 focuses on the layer of fluid in the immediate area of a bounding surface where the effects of viscosity are substantial. This book is organized into two main topics—boundary layer control for low drag, and shock-induced separation and its prevention by design and boundary layer control. It specifically discusses the nature of transition, effect of two-dimensional and isolated roughness on laminar flow, and progress in the design of low drag aerofoils. The onset of separation effects for aerofoils and wings, shock-induced separation for laminar boundary layers, and shock-induced separation for laminar boundary layers are also deliberated. This volume is recommended to physicists and specialists interested in boundary layer and flow control.

Download or read book Compressible Turbulent Boundary Layer with Arbitrary Pressure Gradient and Heat Transfer written by Philip K. Sasman and published by . This book was released on 1965 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The compressible turbulent boundary layer is expressed in terms of the momentum integral and moment of momentum integral equations for arbitrary pressure gradient. Upon simplification of this equation set with a Mager type transformation, the two coupled differential equations are solved simulataneously to provide boundary layer momentum thickness, displacement thickness, skin friction coefficient and related quantities as a function of the body surface coordinate. The analysis includes surface heat-transfer effects. Results of the analysis are presented for adiabatic, non-adiabatic, twodimensional and axisymmetric flow fields in a Mach number range between 2 and 8. Flows with adverse pressure gradients are also examined. The present analysis is compared with available experimental and theoretical results. The analysis is found to yield satisfactory results for flows with and without heat transfer. In addition, for flows in the presence of large adverse pressure gradients in which the boundary layer is known to be well-behaved, spurious separation is not indicated; instead, rather good agreement with available experimental data is observed. (Author).

Download or read book Lecture Series Boundary Layer Theory Turbulent flows written by Hermann Schlichting and published by . This book was released on 1949 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transformation Theory for the Compressible Turbulent Boundary Layer with Arbitrary Pressure Gradient written by John E. Lewis and published by . This book was released on 1968 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coles' analytical development of the transformation has been reviewed and its application to the constant pressure turbulent boundary layer studied. The limitations of the theory noted by Baronti and Libby are clarified, and an attempt is made to explain the remaining discrepancies. The equations governing the scaling functions (which link the high speed boundary layer to an equivalent low speed flow) are derived in terms of the integral properties of the low speed flow for an arbitrary pressure distribution. The modeling is completed by coupling the pressure gradients of the two flows and predicting the behavior of the integral properties of the low speed flow. The resulting formulation predicts the integral properties of the high speed turbulent boundary layer as well as the required modeling to an equivalent low speed flow. Finally, the theory is applied to a variety of situations. (Author).

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1979 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.