A Numerical Study of Confined Turbulent Jets
Author :
Publisher :
Page : 28 pages
File Size : 10,52 MB
Release : 1993
Category :
ISBN :
Author :
Publisher :
Page : 28 pages
File Size : 10,52 MB
Release : 1993
Category :
ISBN :
Author : J. Zhu
Publisher :
Page : 30 pages
File Size : 34,56 MB
Release : 1993
Category :
ISBN :
A numerical investigation is reported of turbulent incompressible jets confined in two ducts, one cylindrical and the other conical with a 5 degree divergence. In each case, three Craya-Curtet numbers are considered which correspond, respectively, to flow situations with no moderate and strong recirculation. Turbulence closure is achieved by using the k-epsilon model and a recently proposed realizable Reynolds stress algebraic equation model that relates the Reynolds stresses explicitly to the quadratic terms of the mean velocity gradients and ensures the positiveness of each component of the turbulent kinetic energy. Calculations are carried out with a finite-volume procedure using boundary-fitted curvilinear coordinates. A second-order accurate, bounded convection scheme and sufficiently fine grids are used to prevent the solutions from being contaminated by numerical diffusion. The calculated results are compared extensively with the available experimental data. It is shown that the numerical methods presented are capable of capturing the essential flow features observed in the experiments and that the realizable Reynolds stress algebraic equation model performs much better than the k-epsilon model for this class of flows of great practical importance.
Author : Jeyhoon Mamaghani Khodadadi
Publisher :
Page : 460 pages
File Size : 20,75 MB
Release : 1986
Category : Jets
ISBN :
Author : Gang Zhu
Publisher :
Page : 25 pages
File Size : 49,72 MB
Release : 1993
Category : Turbulence
ISBN :
Author : Kamal R. Ragel
Publisher :
Page : 204 pages
File Size : 20,2 MB
Release : 1995
Category :
ISBN :
"The flow field results were found to be in qualitative agreement with most of the past related experimental work. In case I, the average Nusselt numbers were compared with those obtained from Martin's (3) correlation. A good agreement was found in the range of validity of this correlation (low crossflow)." --
Author : Mizanur Rahman
Publisher :
Page : 31 pages
File Size : 41,26 MB
Release : 1997
Category :
ISBN : 9789512234288
Author :
Publisher :
Page : 492 pages
File Size : 38,68 MB
Release : 1994
Category : Aeronautics
ISBN :
Author : Taghi Karimipanah
Publisher :
Page : 8 pages
File Size : 31,94 MB
Release : 1996
Category :
ISBN : 9789171706676
Author : Harold E. Adkins
Publisher :
Page : 360 pages
File Size : 28,31 MB
Release : 1997
Category : Jets
ISBN :
Author : Choudary Rama Krishna Bobba
Publisher :
Page : 250 pages
File Size : 24,82 MB
Release : 1979
Category :
ISBN :