Turbulence-chemistry interaction models for numerical simulation of aeronautical propulsion systems

Abstract : Modeling the turbulence-chemistry interaction is a key point in the numerical simulation of the combustion in the air-breathing engines. The present work is devoted to adaptation and integration of the different turbulent combustion models into the ONERA industrial code CFD package for diphasic reactive flows (CEDRE). The first part of the thesis is focused on the quasi-linear hyperbolic stochastic partial differential equations (SPDEs) which are statistically equivalent to a transport equation for the joint velocity-scalars probability density function (PDF). It is shown that in order to preserve the equivalence between the SPDEs and the transport equation for the joint velocity-scalars PDF, multivalued solutions of the SPDEs should be taken into account. A new stochastic method to solve the SPDEs, recently proposed by O. Soulard [Emako2014], is considered and validated on one-dimensional test-cases. It is shown that this method is able to recover the multivalued solutions of the SPDEs in the statistical sense. The numerical solution of the SPDEs is time consuming, therefore the second part of the thesis is concerned with a flamelet tabulated chemistry (FTC) and an extended partially stirred reactor (EPaSR) models. In the framework of CEDRE CFD software the FTC approach is updated, presuming that the distribution is given by a beta-PDF. The adaptation of the LES/EPaSR model [Sabelnikov2013] to the RANS and its integration into CEDRE are done. The EPaSR and the FTC with the presumed beta-PDF are validated against experimental data [Magre1988] on a configuration of a backward-facing step combustor. It is shown that the RANS/EPaSR calculation yields the best agreement with the experiment compared to other considered approaches.
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https://pastel.archives-ouvertes.fr/tel-01113856
Contributor : Nadezda Petrova <>
Submitted on : Friday, February 6, 2015 - 2:10:49 PM
Last modification on : Tuesday, March 26, 2019 - 2:24:42 PM
Long-term archiving on : Sunday, April 16, 2017 - 8:09:54 AM

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  • HAL Id : tel-01113856, version 1

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Nadezda Petrova. Turbulence-chemistry interaction models for numerical simulation of aeronautical propulsion systems. Modeling and Simulation. Ecole polytechnique X, 2015. English. ⟨tel-01113856⟩

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