Multi-component vapor-liquid equilibrium model for LES and application to ECN Spray A

J Matheis, Stefan Hickel

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Abstract

We present and evaluate a detailed multi-species two-phase thermodynamic equilibrium model for large-eddy simulations (LES) of liquid-fuel injection and mixing at high pressure. The model can represent the coexistence of supercritical states and multicomponent subcritical two-phase states. LES results for the transcritical Spray A of the Engine Combustion Network (ECN) are found to agree very well to available experimental data. We also address well-known numerical challenges of trans- and supercritical fluid mixing and compare a fully conservative formulation to a quasi conservative formulation of the governing equations. Our results prove physical and numerical consistency of both methods on fine grids and demonstrate the effects of energy conservation errors associated with the quasi conservative formulation on typical LES grids.
Original languageEnglish
Title of host publicationProceedings of the 2016 Summer Program
Subtitle of host publicationStudying Turbulence Using Numerical Simulation Databases - XVI
Pages25
Number of pages34
Publication statusPublished - 2016
EventStudying Turbulence Using Numerical Simulation Databases - XVI: 2016 Summer Program - Stanford, United States
Duration: 26 Jun 201622 Jul 2016
Conference number: 16
https://ctr.stanford.edu/proceedings-2016-summer-program

Conference

ConferenceStudying Turbulence Using Numerical Simulation Databases - XVI
CountryUnited States
CityStanford
Period26/06/1622/07/16
Internet address

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    Matheis, J., & Hickel, S. (2016). Multi-component vapor-liquid equilibrium model for LES and application to ECN Spray A. In Proceedings of the 2016 Summer Program: Studying Turbulence Using Numerical Simulation Databases - XVI (pp. 25)