Please use this identifier to cite or link to this item:
|Title:||Resolved Scalar Mixing in Large Eddy Simulations of a High Reynolds Number Plane Mixing Layer|
|Authors:||Hug, Stephan N.|
McMullan, William A.
|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.|
|Embargo on file until:||1-Jan-10000|
|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|
Files in This Item:
|snhHighRepdf.pdf||Published (publisher PDF)||10.94 MB||Adobe PDF||View/Open|
Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.