Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/41139
Title: Resolved Scalar Mixing in Large Eddy Simulations of a High Reynolds Number Plane Mixing Layer
Authors: Hug, Stephan N.
McMullan, William A.
First Published: 5-Jun-2017
Presented at: 23RD AIAA Computational Fluid Dynamics Conference, AIAA AVIATION Forum, Denver, Colorado. 5-9 June 2017
Publisher: American Institute of Aeronautics and Astronautics
Citation: 23RD AIAA Computational Fluid Dynamics Conference, AIAA AVIATION Forum, 2017
Abstract: In this paper we present the results from a series of Large Eddy Simulations of the initially-laminar plane mixing layer. Local Reynolds numbers, based on the velocity differ- ence across the layer and its visual thickness, of up to 200,000 are achieved. The purpose of this study is to assess the effect of inflow conditions on the resolved scalar mixing in the flow. When a white-noise disturbance environment is applied to the inflow condition, there is an absence of a spatially stationary streamwise vortex structure, the turbulent coherent structures grow continuously and linearly, and the scalar probability density functions are titled in nature. When a physically-correlated disturbance environment is applied to the inflow condition, a spatially stationary streamwise vortex structure is present in the flow, the turbulent coherent structures grow continuously and with the square-root of time, and the scalar probability density functions are non-marching. The mixed fluid statistics obtained from the latter simulation type agree well with comparable experimental data. This research suggests that different entrainment mechanisms are possible in simulations of plane mixing layers, dependent on the type of inflow condition used.
DOI Link: 10.2514/6.2017-3611
Links: https://arc.aiaa.org/doi/abs/10.2514/6.2017-3611
http://hdl.handle.net/2381/41139
Embargo on file until: 1-Jan-10000
Version: Publisher Version
Type: Conference Paper
Rights: Copyright © 2017, American Institute of Aeronautics and Astronautics. All rights reserved.
Description: The file associated with this record is under a permanent embargo in accordance with the publisher's policy. The full text may be available through the publisher links provided above.
Appears in Collections:Conference Papers & Presentations, Dept. of Computer Science

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