Characteristics of Three-dimensional Turbulent Jets
Author : Choudary Rama Krishna Bobba
Publisher :
Page : 250 pages
File Size : 23,30 MB
Release : 1979
Category :
ISBN :
Author : Choudary Rama Krishna Bobba
Publisher :
Page : 250 pages
File Size : 23,30 MB
Release : 1979
Category :
ISBN :
Author : CHOUDARY R. BOBBA
Publisher :
Page : 125 pages
File Size : 26,44 MB
Release : 1981
Category :
ISBN :
Author : N. Rajaratnam
Publisher : Elsevier
Page : 315 pages
File Size : 14,92 MB
Release : 1976-01-01
Category : Science
ISBN : 0080869963
Turbulent Jets
Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Page : 26 pages
File Size : 41,22 MB
Release : 2018-10-25
Category : Science
ISBN : 9781729191071
Three dimensional turbulent jets in crossflow at low to medium jet-to-crossflow velocity ratios are computed with a finite volume numerical procedure which utilizes a second-moment closure model to approximate the Reynolds stresses. A multigrid method is used to accelerate the convergence rate of the procedure. Comparison of the computations to measured data show good qualitative agreement. All trends are correctly predicted, though there is some uncertainty on the height of penetration of the jet. The evolution of the vorticity field is used to explore the jet-crossflow interaction. Demuren, A. O. Glenn Research Center NASA ORDER C-99066-G...
Author :
Publisher :
Page : 464 pages
File Size : 45,58 MB
Release : 1995
Category : Aeronautics
ISBN :
Author : A. O. Demuren
Publisher :
Page : 26 pages
File Size : 36,76 MB
Release : 1991
Category : Multigrid methods (Numerical analysis)
ISBN :
Author : Robert V. Wilson
Publisher :
Page : 24 pages
File Size : 36,63 MB
Release : 1997
Category :
ISBN :
Three-dimensional turbulent jets with rectangular cross-section are simulated with a finite-difference numerical method. The full Navier-Stokes equations are solved at low Reynolds numbers, whereas at the high Reynolds numbers filtered forms of the equations are solved along with a subgrid scale model to approximate effects of the unresolved scales. A 2-N storage, third-order Runge-Kutta scheme is used for temporal discretization and a fourth-order compact scheme is used for spatial discretization. Computations are performed for different inlet conditions which represent different types of jet forcing. The phenomenon of axis-switching is observed, and it is confirmed that this is based on self-induction of the vorticity field. Budgets of the mean streamwise velocity show that convection is balanced by gradients of the Reynolds stresses and the pressure.
Author : Scott Alan Stanley
Publisher :
Page : 376 pages
File Size : 30,96 MB
Release : 1998
Category :
ISBN :
Author : Robert V. Wilson
Publisher :
Page : 388 pages
File Size : 29,39 MB
Release : 1996
Category : Finite differences
ISBN :
Author : F. Durst
Publisher : Springer Science & Business Media
Page : 415 pages
File Size : 23,22 MB
Release : 2012-12-06
Category : 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.