Print Email Facebook Twitter Multi-component vapor-liquid equilibrium model for LES of high-pressure fuel injection and application to ECN Spray A Title Multi-component vapor-liquid equilibrium model for LES of high-pressure fuel injection and application to ECN Spray A Author Matheis, Jan (Technische Universität München) Hickel, S. (TU Delft Aerodynamics) Date 2018 Abstract We present and evaluate a two-phase model for Eulerian large-eddy simulations (LES) of liquid-fuel injection and mixing at high pressure. The model is based on cubic equations of state and vapor-liquid equilibrium calculations and can represent the coexistence of supercritical states and multi-component subcritical two-phase states via a homogeneous mixture approach. Well-resolved LES results for the Spray A benchmark case of the Engine Combustion Network (ECN) and three additional operating conditions are found to agree very well with 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. Subject Diesel fuel injectionEngine Combustion Network (ECN) Spray ALarge Eddy Simulation (LES)SupercriticalTranscriticalVapor-liquid equilibrium (VLE) To reference this document use: http://resolver.tudelft.nl/uuid:50a18940-f444-4b67-8214-3c434e3aca33 DOI https://doi.org/10.1016/j.ijmultiphaseflow.2017.11.001 ISSN 0301-9322 Source International Journal of Multiphase Flow, 99, 294-311 Part of collection Institutional Repository Document type journal article Rights © 2018 Jan Matheis, S. Hickel Files PDF 1_s2.0_S0301932217301076_main.pdf 3.55 MB Close viewer /islandora/object/uuid:50a18940-f444-4b67-8214-3c434e3aca33/datastream/OBJ/view