Calculations Of Turbulent Separated Flows
Download Calculations Of Turbulent Separated Flows full books in PDF, epub, and Kindle. Read online free Calculations Of Turbulent Separated Flows ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Separated Flows and Jets
| Author | : Victor V. Kozlov |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 907 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 3642844472 |
Separated flows and jets are closely linked in a variety of applications. They are of great importance in various fields of fluid mechanics including vehicle efficiency, technical branches concerned with gas/liquid flows, atmospheric effects on various constructions, etc. Knowledge of the physics of separated flows and jets and the development of reliable control techniques are prerequisite for future progress in the field. These aspects were in focus during the IUTAM-Symposium which was held in Novosibirsk, 9-13 July, 1990. This volume contains a selection of papers presenting recent results of theoretical and numerical studies as well as experimental work on separated flows and jets. The topics include sub- and supersonic, laminar and turbulent separation as well as organized structures in separated flows and jets. The reader will find here the state of the art and major trends for research in this field of aero-hydrodynamics.
Turbulent Separated Flow Over a Ramp: A Numerical Investigation
| Author | : |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2002 |
| Genre | : |
| ISBN | : |
Large Eddy Simulation (LES) and Reynolds-averaged Navier-Stokes (RANS) calculations have been performed of the turbulent flow over a smoothly-contoured ramp. The upstream conditions are prescribed as canonical turbulent boundary layer, obtained from a separate pre-computation. The flow in the primary calculation develops downstream, first experiencing an increase in the surface skin friction due to ramp curvature, then exhibiting a shallow separation with subsequent reattachment on a flat section downstream. The computational domain includes the downstream recovery region, enabling an assessment of model predictions of the recovery process. The turbulence models implemented are the Spalart-Allmaras one-equation model, referred to as S-A throughout (Spalart and Allmaras 1994), V2F (Durbin 1991), and a modified version, referred to as M2VF (Lien and Durbin 1996). Visualizations of the instantaneous flow shows that the separation location fluctuates at a high & frequency than the reattachment location, with the instantaneous reattachment trajectory giving indications of short shedding events. The mean velocities collapse to the universal log law at about four ramp lengths downstream of the beginning of the curved section whereas the turbulence quantities recover more slowly. The recovery process is not monotonic in that it is governed by decay of the outer layer perturbations and initiation and growth of inner layer following attachment.
Two-Dimensional Separated Flows
| Author | : S. M. Belotserkovsky |
| Publisher | : CRC Press |
| Total Pages | : 322 |
| Release | : 1992-11-30 |
| Genre | : Technology & Engineering |
| ISBN | : 9780849393068 |
Two-Dimensional Separated Flows provides a systematic presentation of the theory of separated flow around bodies. The main classes of aerodynamic problems of plane-parallel flow around bodies are described, and the steady aerodynamic, unsteady aerodynamic, and statistical characteristics of a trailing wake are determined. Numerical methods based on the synthesis of models for non-viscous incompressible flow and boundary layer, algorithms, examples, and systematic comparisons are presented. The book also includes numerical results for the problem of separated flow around fixed, oscillating, and rotating cylinders, in addition to results for separated flow around an aerofoil over a wide range of angles. Two-Dimensional Separated Flows will benefit researchers and students studying aerodynamics, aircraft dynamics, aeroelasticity, and the aerodynamics of building structures.
Turbulence Models and Their Application
| Author | : Tuncer Cebeci |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 140 |
| Release | : 2003-12-04 |
| Genre | : Science |
| ISBN | : 9783540402886 |
After a brief review of the more popular turbulence models, the author presents and discusses accurate and efficient numerical methods for solving the boundary-layer equations with turbulence models based on algebraic formulas (mixing length, eddy viscosity) or partial-differential transport equations. A computer program employing the Cebeci-Smith model and the k-e model for obtaining the solution of two-dimensional incompressible turbulent flows without separation is discussed in detail and is presented in the accompanying CD.
Turbulent Shear Flows I
| Author | : F. Durst |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 415 |
| Release | : 2012-12-06 |
| Genre | : Technology & Engineering |
| ISBN | : 3642463959 |
The present book contains papers that have been selected from contributions to the First International Symposium on Turbulent Shear Flows which was held from the 18th to 20th April 1977 at The Pennsylvania State University, University Park, Pennsylvania, USA. Attend ees from close to 20 countries presented over 100 contributions at this meeting in which many aspects of the current activities in turbulence research were covered. Five topics received particular attention at the Symposium: Free Flows Wall Flows Recirculating Flows Developments in Reynolds Stress Closures New Directions in Modeling This is also reflected in the five chapters of this book with contributions from research workers from different countries. Each chapter covers the most valuable contributions of the conference to the particular chapter topic. Of course, there were many additional good con tributions to each subject at the meeting but the limitation imposed on the length of this volume required that a selection be made. The realization of the First International Symposium on Turbulent Shear Flows was p- sible by the general support of: U. S. Army Research Office U. S. Navy Research Office Continuing Education Center of The Pennsylvania State University The conference organization was carried out by the organizing committee consisting of: F. Durst, Universitat Karlsruhe, Karlsruhe, Fed. Rep. of Germany V. W. Goldschmidt, Purdue University, West Lafayette, Ind. , USA B. E. Launder, University of California, Davis, Calif. , USA F. W. Schmidt, Pennsylvania State University, University Park, Penna.
Separation of Flow
| Author | : Paul K. Chang |
| Publisher | : Elsevier |
| Total Pages | : 800 |
| Release | : 2014-06-28 |
| Genre | : Technology & Engineering |
| ISBN | : 1483181286 |
Interdisciplinary and Advanced Topics in Science and Engineering, Volume 3: Separation of Flow presents the problem of the separation of fluid flow. This book provides information covering the fields of basic physical processes, analyses, and experiments concerning flow separation. Organized into 12 chapters, this volume begins with an overview of the flow separation on the body surface as discusses in various classical examples. This text then examines the analytical and experimental results of the laminar boundary layer of steady, two-dimensional flows in the subsonic speed range. Other chapters consider the study of flow separation on the two-dimensional body, flow separation on three-dimensional body shape and particularly on bodies of revolution. This book discusses as well the analytical solutions of the unsteady flow separation. The final chapter deals with the purpose of separation flow control to raise efficiency or to enhance the performance of vehicles and fluid machineries involving various engineering applications. This book is a valuable resource for engineers.
Physics of Separated Flows — Numerical, Experimental, and Theoretical Aspects
| Author | : Klaus Gersten |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 305 |
| Release | : 2013-06-29 |
| Genre | : Science |
| ISBN | : 3663139867 |
This volume contains 37 contributions in which the research work is summarized which has been carried out between 1984 and 1990 in the Priority Research Program "Physik abgeloster Stromungen" of the Deutsche Forschungsgemeinschaft (DFG, German Research Society). The aim of the Priority Research Program was the inten sive research of the whole range of phenomena associated with separated flows. Physi cal models as well as prediction methods had to be developed based on detailed experi mental investigations. It was in accordance with the main concept of the research program that scientists working on problems of separated flows in different technical areas of application participated in this program. The following fields have been represented in the program: aerodynamics of wings and bodies, aerodynamics of auto mobiles, turbomachinery, ship hydrodynamics, hydraulics, internal flows, heat exchan gers, bio-fluid-dynamics, aerodynamics of buildings and structures. In order to concentrate on problems common in all those areas the emphasis of the program was on basic research dealing with generic geometric configurations showing the fundamental physical phenomena of separated flows. The engagement and enthusiasm of all participating scientists are highly appreciated. The program was organized such that all researchers met once a year to report on the progress of their work. Special thanks ought to go to Prof. E. A. Muller (Gottingen), Prof. H. Oertel jun. (Braunschweig), Dr. W. Schmidt (Dornier), Dr. H. -W. Stock (Dornier) and Dr. B. Wagner (Dornier), who had the functions of referees on those annual meetings.
