Monte Carlo simulations of turbulent non-premixed combustion using a velocity conditioned mixing model

Michael Stoellinger, Denis Efimov, Dirk Roekaerts

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureHoofdstukAcademicpeer review

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Samenvatting

Non-premixed turbulent combustion in a laboratory scale flame (Delft III flame) is studied using a statistical description at the one-point one-time joint velocity—scalar composition probability density function (PDF) level. The PDF evolution equation is solved using a stochastic Lagrangian Monte Carlo method.The PDF equation requires a so called micro-mixing model for closure and the performance of two micro-mixing models is investigated. The Interaction by Exchange with the Mean (IEM) micro mixing model is the most commonly adopted model. The IEM model was developed for the scalar PDF method and does not depend on velocity statistics.Aphysically more sound extension of the IEM is the Interaction by Exchange with the Conditional Mean (IECM) which involves mixing of the scalars towards mean values conditional on the velocity. Both models are applied in this work and it is shown that the IECM model does perform significantly better than the simple IEM model.

Originele taal-2Engels
TitelStochastic equations for complex systems
Subtiteltheoretical and computational topics
RedacteurenStefan Heinz, Hakima Bessaih
Plaats van productieBerlin
UitgeverijSpringer
Pagina's143-174
Aantal pagina's32
ISBN van geprinte versie978-3-319-18205-6
DOI's
StatusGepubliceerd - 1 jan 2015

Publicatie series

NaamMathematical Engineering
Volume20
ISSN van geprinte versie2192-4732

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