Experimental Study of a Radial Turbulent Jet : 1st Report, Effect of Nozzle Shape on a Free Jet
Toshio Tanaka,Eiichi Tanaka +1 more
TLDR
The concept of the equivalent nozzle width which contains the diameter and width of the nozzle can be usefully applied to describe both maximum flow velocity decay and growth of the jet half width with distance from a nozzle outlet as mentioned in this paper.Abstract:
Mean velocity and turbulence together with pressure distributions in a radial free jet flows were studied. By changing diameter and width of nozzles and discharge velocity, the flow pattern were measured. The concept of the equivalent nozzle width which contains the diameter and width of the nozzle can be usefully applied to describe both maximum flow velocity decay and growth of the jet half width with distance from a nozzle outlet. The maximum flow velocity decay and the growth of the jet half width lie on a single curve according to this equivalent nozzle width. In the main region at large nozzle Reynolds number, the maximum flow velocity decays following the same rule as in circular jet, and the growth of the jet half width is in good agreement with that in the two-dimensional jet.read more
Citations
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Journal ArticleDOI
Formulation of the k-w Turbulence Model Revisited
TL;DR: In this article, a reformulated version of the author's k-ω model of turbulence has been presented, which has been applied to both boundary layers and free shear flows and has little sensitivity to finite freestream boundary conditions on turbulence properties.
Journal ArticleDOI
Unified turbulence closure model for axisymmetric and planar free shear flows
TL;DR: In this paper, a two-equation turbulence model based on the exact turbulent kinetic energy and the variance of vorticity or enstrophy equations is developed and used to calculate planar and axisymmetric free shear flows.
Journal ArticleDOI
On the vortex stretching modification of the k-epsilon turbulence model - Radial jets
TL;DR: Carroll, B. F. and Dutton, J. C. as discussed by the authors, "Transonic Flow in the Throat Region of Axisymmetric Nozzles," AIAA Journal, Vol. 19, June 1981, pp. 801-804.
Journal ArticleDOI
Theory for Radial Jet Reattachment Flow
TL;DR: In this paper, the influence of the nozzle exit geometry and the spacing between the radial jet and the flat place is theoretically determined for both laminar and turbulent flows, and a component analysis is used for the theoretical treatment.
Journal ArticleDOI
Prediction of radially spreading turbulent jets
TL;DR: On modifie le modele de turbulence k-e afin que le taux de production de k associe a la divergence laterale de l'ecoulement radial ait une influence importante sur le processus d'augmentation d'echelle as mentioned in this paper.
References
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Book
Boundary layer theory
TL;DR: The flow laws of the actual flows at high Reynolds numbers differ considerably from those of the laminar flows treated in the preceding part, denoted as turbulence as discussed by the authors, and the actual flow is very different from that of the Poiseuille flow.
Book
The Structure of Turbulent Shear Flow
TL;DR: In this paper, the authors present a method to find the optimal set of words for a given sentence in a sentence using the Bibliogr. Index Reference Record created on 2004-09-07, modified on 2016-08-08
Book
The Theory of Turbulent Jets
TL;DR: In this paper, the authors present the theory of the boundary layer of a two-dimensional Turbulent Jet of Incompressible Fluid and its application to heat and diffusion problems, and determine the temperature profile in a Jet on the basis of the New Prandtl-Gortler Theory of Turbulence.