Large Eddy Simulation/Computing Needs

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Title Large Eddy Simulation/Computing Needs
Creator Henneke, M.
Contributor Montgomery, C., Cuenot, B., Riber, E., Nadakkal, S.
Date 2018-09-17
Description Paper from the AFRC 2018 conference titled Large Eddy Simulation/Computing Needs
Abstract As computing power becomes more affordable and available, Large Eddy Simulation (LES) becomes attractive as a simulation tool for industrial combustion equipment. LES, by explicitly modeling the time-dependent evolution of the largest turbulent scales, avoids the approximations inherent in the Reynolds-Averaged Navier-Stokes (RANS) models that have been commonly used for decades. ; Academic LES practitioners have listed criteria for LES reliability and validity such as mesh resolution necessary to capture a sufficient portion of the turbulent energy spectrum. Also important are the use of high-order time and space discretization methods, and sufficiently small time steps to ensure accurate temporal evolution of the reacting flowfield. Strict adherence to the many criteria put forth leads to heavy computational demands. ; The engineer interested in industrially useful answers is left to wonder how strictly the academic criteria for valid LES must be followed to get answers sufficient to guide engineering design. In this paper we will attempt to address this issue, drawing from academic literature, published industrial work and our own experience.
Type Event
Format application/pdf
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Metadata Cataloger Catrina Wilson
ARK ark:/87278/s66440r4
Setname uu_afrc
Date Created 2018-12-12
Date Modified 2021-05-06
ID 1389182
Reference URL