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CFD Analysis of Twin Turbulent Impinging Round Jets at Different Impingement Angles

Department of Aerospace Engineering, University of Cincinnati, Cincinnati, OH 45221, USA
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Fluids 2018, 3(4), 79; https://doi.org/10.3390/fluids3040079
Received: 23 August 2018 / Revised: 16 October 2018 / Accepted: 17 October 2018 / Published: 23 October 2018
(This article belongs to the Special Issue Turbulence and Transitional Modeling of Aerodynamic Flows)
Round jets impinging at multiple impingement angles were considered for this study to gain better understanding of the parameters affecting resultant jet growth and velocity distribution. Work done by the authors previously on single jet has helped to establish that the SST (Shear Stress Transport) k-ω model is the ideal turbulence model for predicting flow characteristics of jets exiting a fully developed pipe at low Reynolds number. Hence, for the study of impinging jets, SST k-ω turbulence model was used to study the velocity and jet growth characteristics. Based on the mesh obtained from the grid sensitivity study, jets impinging at 30, 45 and 60 degrees at Reynolds number of 7500 were numerically analyzed. It was observed that the profile of the resultant jet closely matched with the prediction of elliptical profile predicted by past researchers. In addition, it was seen that higher jet growth was predicted in the case of jets impinging at a higher impingement angle. View Full-Text
Keywords: Reynolds-averaged Navier–Stokes (RANS); round jets; turbulence model; impinging jets; shear stress transport (SST) k-omega model Reynolds-averaged Navier–Stokes (RANS); round jets; turbulence model; impinging jets; shear stress transport (SST) k-omega model
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Gopalakrishnan, R.N.; Disimile, P.J. CFD Analysis of Twin Turbulent Impinging Round Jets at Different Impingement Angles. Fluids 2018, 3, 79.

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