Numerical and experimental investigation of nonswirling and swirling confined jetsAn investigation of the influence of large scale structures on the flow development for coaxial jets with sudden expansion (with and without swirl) is presented. Both an experimental study and numerical predictions were performed for a configuration corresponding to that considered by Johnson and Bennett and Roback and Johnson. The effects of large scale structures on the swirling and nonswirling flows are documented, in particular their influence on turbulence modeling and the numerical simulation. The ensemble-averaged, time-dependent Navier-Stokes equations are solved by an LBI procedure to predict the turbulent flow field. Effects of artificial dissipation and placement of the upstream boundary in the numerical computation are also discussed.
Document ID
19860034913
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brondum, D. C. (Connecticut Univ. Storrs, CT, United States)
Bennett, J. C. (Connecticut, University Storrs, United States)
Weinberg, B. C. (Connecticut Univ. Storrs, CT, United States)
Mcdonald, H. (Scientific Research Associates, Inc. Glastonbury, CT, United States)