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Modeling Requirements for LES of Fully Multicomponent Fuel Flows

Selle, Laurent C. and Bellan, Josette (2008) Modeling Requirements for LES of Fully Multicomponent Fuel Flows. In: 46th AIAA Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2008-983. ISBN 978-1-62410-128-1. https://resolver.caltech.edu/CaltechAUTHORS:20200506-071125715

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Abstract

The Large Eddy Simulation (LES) equations for multi-component (MC) fuel two-phase flow are derived from the Direct Numerical Simulation (DNS) equations by filtering the DNS equations using a top-hat filter. The filtered equations contain two categories of subgrid-scale (SGS) terms that must be modeled: (1) SGS terms and (2) terms representing the 'LES assumptions'. In contrast to single-component (SC) fuels, it is shown that two LES formulations, rather than a single one, are possible, and these formulations are not equivalent. Assumptions not present in corresponding SC LES equations are examined and assessed. Criteria are proposed to select the formulation best suited for LES. These criteria are used in conjunction with evaluations based on a DNS database and lead to the final LES equations. This analysis represents the precursor to a future study for modeling the MC LES equations.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2008-983DOIArticle
ORCID:
AuthorORCID
Bellan, Josette0000-0001-9218-7017
Additional Information:© 2008 by California Institute of Technology. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2008-983
DOI:10.2514/6.2008-983
Record Number:CaltechAUTHORS:20200506-071125715
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200506-071125715
Official Citation:Modeling Requirements for LES of Fully Multicomponent Fuel Flows Laurent Selle and Josette Bellan 46th AIAA Aerospace Sciences Meeting and Exhibit. January 2008; doi: 10.2514/6.2008-983
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103012
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:06 May 2020 16:19
Last Modified:16 Nov 2021 18:17

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