Transitional and Turbulent Compressible Flows
Author | : |
Publisher | : |
Total Pages | : 236 |
Release | : 1995 |
Genre | : Compressibility |
ISBN | : |
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Author | : |
Publisher | : |
Total Pages | : 236 |
Release | : 1995 |
Genre | : Compressibility |
ISBN | : |
Author | : L. D. Kral |
Publisher | : |
Total Pages | : 228 |
Release | : 1995 |
Genre | : Science |
ISBN | : |
Author | : Julius E. Harris |
Publisher | : |
Total Pages | : 92 |
Release | : 1971 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
A numerical method for solving the equations for laminar, transitional, and turbulent compressible boundary layers for either planar or axisymmetric flows is presented. The fully developed turbulent region is treated by replacing the Reynolds stress terms with an eddy viscosity model. The mean properties of the transitional boundary layer are calculated by multiplying the eddy viscosity by an intermittency function based on the statistical production and growth of the turbulent spots. A specifiable turbulent Prandtl number relates the turbulent flux of heat to the eddy viscosity. A three-point implicit finite-difference scheme is used to solve the system of equations. The momentum and energy equations are solved simultaneously without iteration. Numerous test cases are compared with experimental data for supersonic and hypersonic flows; these cases include flows with both favorable and mildly unfavorable pressure gradient histories, mass flux at the wall, and traverse curvature.
Author | : Tuncer Cebeci |
Publisher | : Springer |
Total Pages | : 502 |
Release | : 2009-09-02 |
Genre | : Science |
ISBN | : 9783540807315 |
This second edition of the book, Modeling and Computation of Boundary-Layer Flows^ extends the topic to include compressible flows. This implies the inclusion of the energy equation and non-constant fluid properties in the continuity and momentum equations. The necessary additions are included in new chapters, leaving the first nine chapters to serve as an introduction to incompressible flows and, therefore, as a platform for the extension. This part of the book can be used for a one semester course as described below. Improvements to the incompressible flows portion of the book include the removal of listings of computer programs and their description, and their incor poration in two CD-ROMs. A listing of the topics incorporated in the CD-ROM is provided before the index. In Chapter 7 there is a more extended discussion of initial conditions for three-dimensional flows, application of the characteristic box to a model problem and discussion of flow separation in three-dimensional laminar flows. There are also changes to Chapter 8, which now includes new sections on Tollmien-Schlichting and cross-flow instabilities and on the predic tion of transition with parabolised stability equations, and Chapter 9 provides a description of the rational behind interactive boundary-layer procedures.
Author | : Brian Edward Launder |
Publisher | : Cambridge University Press |
Total Pages | : 774 |
Release | : 2002-02-21 |
Genre | : Mathematics |
ISBN | : 9780521792080 |
Publisher Description
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1993 |
Genre | : |
ISBN | : |
Author | : Tuncer Cebeci |
Publisher | : Springer |
Total Pages | : 502 |
Release | : 2005-05-04 |
Genre | : Science |
ISBN | : 9783540244592 |
This second edition of the book, Modeling and Computation of Boundary-Layer Flows^ extends the topic to include compressible flows. This implies the inclusion of the energy equation and non-constant fluid properties in the continuity and momentum equations. The necessary additions are included in new chapters, leaving the first nine chapters to serve as an introduction to incompressible flows and, therefore, as a platform for the extension. This part of the book can be used for a one semester course as described below. Improvements to the incompressible flows portion of the book include the removal of listings of computer programs and their description, and their incor poration in two CD-ROMs. A listing of the topics incorporated in the CD-ROM is provided before the index. In Chapter 7 there is a more extended discussion of initial conditions for three-dimensional flows, application of the characteristic box to a model problem and discussion of flow separation in three-dimensional laminar flows. There are also changes to Chapter 8, which now includes new sections on Tollmien-Schlichting and cross-flow instabilities and on the predic tion of transition with parabolised stability equations, and Chapter 9 provides a description of the rational behind interactive boundary-layer procedures.
Author | : Gary D. Kuhn |
Publisher | : |
Total Pages | : 140 |
Release | : 1971 |
Genre | : Boundary layer |
ISBN | : |
Author | : L. D. Kral |
Publisher | : |
Total Pages | : 274 |
Release | : 1993 |
Genre | : Science |
ISBN | : |
Author | : M.Y. Hussaini |
Publisher | : Springer Science & Business Media |
Total Pages | : 626 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 1461229561 |
This volume contains the proceedings of the Workshop on In stability, Transition and Turbulence, sponsored by the Institute for Computer Applications in Science and Engineering (ICASE) and the NASA Langley Research Center (LaRC), during July 8 to August 2, 1991. This is the second workshop in the series on the subject. The first was held in 1989, and its proceedings were published by Springer-Verlag under the title "Instability and Transition" edited by M. Y. Hussaini and R. G. Voigt. The objectives of these work shops are to i) expose the academic community to current technologically im portant issues of transition and turbulence in shear flows over the entire speed range, ii) acquaint the academic community with the unique combination of theoretical, computational and experimental capabilities at LaRC and foster interaction with these capabilities, and iii) accelerate progress in elucidating the fundamental phenomena of transition and turbulence, leading to improved transition and turbulence modeling in design methodologies. The research areas covered in these proceedings include receptiv ity and roughness, nonlinear theories of transition, numerical simu lation of spatially evolving flows, modelling of transitional and fully turbulent flows as well as some experiments on instability and tran sition. In addition a one-day mini-symposium was held to discuss 1 recent and planned experiments on turbulent flow over a backward facing step.