The effect of inflow conditions on the development of non-swirling versus swirling impinging turbulent jets

Document Type

Journal Article

Publisher

Elsevier

Faculty

Faculty of Health, Engineering and Science

School

School of Engineering

RAS ID

19668

Comments

Ahmed, Z. U., Al-Abdeli, Y. M., & Matthews, M. T. (2015). The effect of inflow conditions on the development of non-swirling versus swirling impinging turbulent jets. Computers & Fluids, 118, 255-273. Available here

Abstract

In this paper, axisymmetric turbulent jets are investigated numerically with the aim of improving our understanding of the effect of inflow conditions, swirl and near-field impingement on jet development. After presenting an extensive overview of the works published on swirling and non-swirling impinging jets, the Reynolds-Averaged Navier-Stokes (RANS) approach (with different turbulence models) is used to study these flows and validated against experimental data sets. This study then explores the effects of the inlet swirl velocity profiles, namely a Uniform Profile (UP), Solid Body rotation (SB) and Parabolic Profile (PP) on impinging jet development in weakly swirling jets (S≤. 0.3) where no vortex breakdown occurs at Re= 23,000 in the near-field (x/D

DOI

10.1016/j.compfluid.2015.06.024

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