Experimental investigation of jets in a crossflow

Author:

Andreopoulos J.,Rodi W.

Abstract

The paper reports on measurements in the flow generated by a jet issuing from a circular outlet in a wall into a cross-stream along this wall. For the jet-to-crossflow velocity ratios R of 0.5, 1 and 2, the mean and fluctuating velocity components were measured with a three-sensor hot-wire probe. The hot-wire signals were evaluated to yield the three mean-velocity components, the turbulent kinetic energy, the three turbulent shear stresses and, in the case of R = 0.5, the terms in the turbulent-kinetic-energy equation. The results give a quantitative picture of the complex three-dimensional mean flow and turbulence field, and the various phenomena as well as their dependence on the velocity ratio R are discussed in detail.

Publisher

Cambridge University Press (CUP)

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics

Reference21 articles.

1. Mcmahon, H. M. , Hester, D. D. & Palfery, J. G. 1971 Vortex shedding from a turbulent jet in a cross wind J. Fluid Mech. 48,73–80.

2. Andreopoulos, J. 1983c Heat transfer measurements in a heated jet-pipe flow issuing into a cold cross-stream.Phys. Fluids. 26,3201–3210.

3. Andreopoulos, J. 1980 Digital techniques and computer programs for hot-wire data processing.Rep. SFB 80/ME/181, Univ. Karlsruhe.

4. Foss, J. 1980 Interaction region phenomena for the jet in a cross-flow problem.Rep. SFB 80/E/161, Univ. Karlsruhe.

5. Bergeles, G. , Gosman, A. D. & Launder, B. E. 1976 The near-field character of a jet discharged normal to a main stream.Trans. ASME C: J. Heat Transfer 98,373.

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