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CFD simulation of pseudo-diesel injections at high-load conditions employing the PC-SAFT EoS and VLE calculations

Rodriguez, C., Rokni, H. B., Koukouvinis, P. ORCID: 0000-0002-3945-3707, Gupta, A. and Gavaises, M. ORCID: 0000-0003-0874-8534 (2019). CFD simulation of pseudo-diesel injections at high-load conditions employing the PC-SAFT EoS and VLE calculations. Paper presented at the ILASS–Europe 2019, 29th Conference on Liquid Atomization and Spray Systems, 2 - 4 September 2019, Paris, France.

Abstract

The molecular-based Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) equation of state (EoS) iscoupled with Vapor-Liquid Equilibrium (VLE) calculations in a density-based solver of the Navier-Stokes equations to perform multicomponent two-phase simulations of Diesel injections at high-pressure conditions. The PC-SAFTEoS requires three parameters, which can be fitted to experimental data or calculated using group contribution methods,to model the properties of a specific component. Therefore, there is no need for extensive model calibration, as is typically the case when the NIST library is utilised. PC-SAFT can flexibly handle the thermodynamic propertiesof multi-component mixtures for which the NIST (REFPROP) library supports only limited component combinations. Moreover, complex hydrocarbon mixtures can be modelled as a single pseudo-component knowing its number averaged molecular weight and the hydrogen-to-carbon ratio. One and two-dimensional simulations areincluded to demonstrate the multidimensional, multispecies and multiphase capability of the numerical framework.

Publication Type: Conference or Workshop Item (Paper)
Additional Information: This work is licensed under a Creative Commons 4.0 International License (CC BY-NC-ND 4.0).
Publisher Keywords: PC-SAFT EoS; Pseudo-component; Diesel Fuel Injection
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Departments: School of Mathematics, Computer Science & Engineering > Engineering > Mechanical Engineering & Aeronautics
URI: http://openaccess.city.ac.uk/id/eprint/22852
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