NDLI: Stochastic modeling of turbulent reacting flows

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Stochastic modeling of turbulent reacting flows

Content Provider	NASA Technical Reports Server (NTRS)
Author	Gao, F. Fox, R. O. Hill, J. C. Rogers, M. M. Moser, R. D.
Copyright Year	1992
Description	Direct numerical simulations of a single-step irreversible chemical reaction with non-premixed reactants in forced isotropic turbulence at R(sub lambda) = 63, Da = 4.0, and Sc = 0.7 were made using 128 Fourier modes to obtain joint probability density functions (pdfs) and other statistical information to parameterize and test a Fokker-Planck turbulent mixing model. Preliminary results indicate that the modeled gradient stretching term for an inert scalar is independent of the initial conditions of the scalar field. The conditional pdf of scalar gradient magnitudes is found to be a function of the scalar until the reaction is largely completed. Alignment of concentration gradients with local strain rate and other features of the flow were also investigated.
File Size	1093776
Page Count	22
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940010295
Archival Resource Key	ark:/13960/t4rj9c82r
Language	English
Publisher Date	1992-11-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Heat Transfer Irreversible Processes Turbulent Flow Computational Fluid Dynamics Reacting Flow Stochastic Processes Fokker-planck Equation Scalars Chemical Reactions Isotropic Turbulence Gradients Turbulent Mixing Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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