An effective approach for estimating turbulence-chemistry interaction in hypersonic turbulent boundary layers is proposed, based on "laminar- chemistry" Reynolds-averaged Navier-Stokes mean flow solutions. The approach combines an assumed probability density function with a temperature fluctuation scaling, which provides the second moment for specifying the shape of the probability density function. As a result, the effects of temperature fluctuation on chemical production rates can be estimated without solving an additional moment evolution equation. The validity of this method is demonstrated using direct-numerical-simulation data. This approach can be used to identify regions with potentially significant turbulence-chemistry interaction in hypersonic boundary layers and it provides guidance on whether or not additional efforts need to be taken to model turbulence-chemistry interaction under selected flow conditions. © 2011 by the authors. Published by the American Institute of Aeronautics and Astronautics, Inc.
L. Duan and M. P. Martín, "Effective Approach For Estimating Turbulence-chemistry Interaction In Hypersonic Turbulent Boundary Layers," AIAA Journal, vol. 49, no. 10, pp. 2239 - 2247, American Institute of Aeronautics and Astronautics, Oct 2011.
The definitive version is available at https://doi.org/10.2514/1.J051034
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
Article - Journal
© 2023 American Institute of Aeronautics and Astronautics, All rights reserved.
01 Oct 2011