A Prediction Method For Turbulent Boundary Layers In Adverse Pressure Gradients
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Author | : W. H. Schofield |
Publisher | : |
Total Pages | : 16 |
Release | : 1981 |
Genre | : Turbulent boundary layer |
ISBN | : 9780642890085 |
Download A Prediction Method for Turbulent Boundary Layers in Adverse Pressure Gradients Book in PDF, Epub and Kindle
A prediction method for turbulent boundary layers in moderate to strong adverse pressure gradients is presented. The closure hypothesis for the method is the universal velocity defect law of Schofield and Perry (1972) which restricts the method to the prediction of layers in moderate to strong adverse pressure gradient. The method is tested against nine experimentally measured boundary layers. Predictions for velocity profile shape, boundary layer thicknesses and velocity scale ratio were generally in good agreement with the experimental measurements and were superior to those given by other prediction methods. Unlike other methods the present method also gives reasonably accurate predictions for the shear stress profile of a layer. The analysis presented here is compared with previous work and helps to resolve some disagreements discerned in the literature.
Author | : Shimer Zane Pinckney |
Publisher | : |
Total Pages | : 68 |
Release | : 1971 |
Genre | : Boundary layer |
ISBN | : |
Download Method for Predicting Compressible Turbulent Boundary Layers in Adverse Pressure Gradients Book in PDF, Epub and Kindle
Author | : Kevin Michael Mejia |
Publisher | : |
Total Pages | : 314 |
Release | : 1991 |
Genre | : Boundary layer |
ISBN | : |
Download A Prediction Method for the Calculation of Boundary Layer Parameters for a Turbulent Boundary Layer Under Free-stream Turbulence for Zero and Adverse Pressure Gradients Book in PDF, Epub and Kindle
Author | : Kennedy F. Rubert |
Publisher | : |
Total Pages | : 61 |
Release | : 1951 |
Genre | : Turbulent boundary layer |
ISBN | : |
Download A Procedure for Calculating the Development of Turbulent Boundary Layers Under the Influence of Adverse Pressure Gradients Book in PDF, Epub and Kindle
A procedure based on the kinetic-energy equation and an extended form of the momentum equation has been devised for calculating the development of turbulent boundary layers in adverse pressure gradients. Predictions, by this method, of turbulent-boundary-layer developement in comparison with experimental results from several sources are presented for a number of cases of flow over flat plates and airfoils and in conical diffusers. In the range of boundary-layer flow short of separation, the agreement with experiment is, in most cases, quite satisfactory; in some instances, however, there is definite disagreement between the calculated and experimental results. It is believed, however, that good agreement has been obtained of effort along the present lines, particularly with respect to improvement of the correlations and refinement of the equations.
Author | : Tuncer Cebeci |
Publisher | : Elsevier |
Total Pages | : 423 |
Release | : 2012-12-02 |
Genre | : Technology & Engineering |
ISBN | : 0323151051 |
Download Analysis of Turbulent Boundary Layers Book in PDF, Epub and Kindle
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.
Author | : H. D. Harris |
Publisher | : |
Total Pages | : 366 |
Release | : 1970 |
Genre | : Turbulent boundary layer |
ISBN | : |
Download An Integral Method for the Prediction of Turbulent Boundary Layer Development, Using Separate Velocity and Shear Stress Profiles Book in PDF, Epub and Kindle
Author | : Hal L. Moses |
Publisher | : |
Total Pages | : 85 |
Release | : 1964 |
Genre | : Boundary layer |
ISBN | : |
Download The Behavior of Turbulent Boundary Layers in Adverse Pressure Gradients Book in PDF, Epub and Kindle
The problem of predicting the behavior of the incompressible turbulent boundary layer in an adverse pressure gradient is re-examined. An outline of the problem is given along with a brief summary of the work that has already been done, including both experimental investigation are presented for a separating turbulent boundary layer with various pressure distributions. An approximate theory is developed in which the momentum integral equation is satisfied for each half of the boundary layer. The velocity profiles used in the analysis consist of the well known wall and wake regions, resulting in a two-parameter family with the Reynolds number as one parameter. It is assumed, with some experimental justification, that the eddy viscosity can be reasonably approximated from zero pressure gradient experimets. The numerical calculations, using the Runge-Kutta procedure, show good agreement with the experiments. The reliability that can be expected of such approximate methods is discussed. (Author).
Author | : J. E. Green |
Publisher | : |
Total Pages | : 52 |
Release | : 1972 |
Genre | : Turbulent boundary layer |
ISBN | : |
Download Application of Head's Entrainment Method to the Prediction of Turbulent Boundary Layers and Wakes in Compressible Flow Book in PDF, Epub and Kindle
Author | : Charles E. Towne |
Publisher | : |
Total Pages | : 38 |
Release | : 1974 |
Genre | : Turbulent boundary layer |
ISBN | : |
Download Evaluation of Analytical Procedures for Prediction of Turbulent Boundary Layers on a Porous Wall Book in PDF, Epub and Kindle
Author | : A. J. Wheeler |
Publisher | : |
Total Pages | : 218 |
Release | : 1971 |
Genre | : Boundary layer |
ISBN | : |
Download Three-dimensional Turbulent Boundary Layers Book in PDF, Epub and Kindle