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A parallel Volume of Fluid-Lagrangian Parcel Tracking coupling procedure for diesel spray modelling

Citation

Yu, H and Goldsworthy, L and Ghiji, M and Brandner, PA and Garaniya, V, A parallel Volume of Fluid-Lagrangian Parcel Tracking coupling procedure for diesel spray modelling, Computers and Fluids, 150 pp. 46-65. ISSN 0045-7930 (2017) [Refereed Article]


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Copyright Statement

Copyright 2017 Elsevier Ltd.

DOI: doi:10.1016/j.compfluid.2017.03.027

Abstract

A parallel computing Eulerian/Lagrangian multi-scale coupling procedure for diesel spray simulation is presented. Early breakup of the diesel jet is captured by using a compressible Volume of Fluid (VOF) method. In regions where the phase interface can no longer be sufficiently resolved, separated and small scale liquid structures are described by a Lagrangian Parcel Tracking (LPT) approach, in conjunction with secondary breakup modelling and a turbulence stochastic dispersion model. The coupling of these two descriptions utilises a Region Coupling Method and an efficiently parallelised droplet identification and extraction procedure. This approach enables run-time VOF-LPT field coupling and filters small-scale liquid structures that are suitable candidates for Eulerian-liquid-structure/Lagrangian droplet conversion, preserving their position, mass and momentum. The coupling procedure is initially applied to model the atomisation of a simple liquid jet and the results are compared with that of a statistical coupling approach to demonstrate the performance of the developed coupling procedure. Its application is then extended to simulate a real diesel spray from a nozzle with a sharp entrance. Coupling in-nozzle phenomena such as flow separation, flow detachment and turbulence to the primary and secondary spray atomisation, provides a tool for the prediction of complex spray dynamics.

Item Details

Item Type:Refereed Article
Keywords:Eulerian (Volume of Fluid); Lagrangian (Lagrangian Parcel Tracking); Parallel coupling; Two-phase flows; Compressible flow; Diesel spray atomisation
Research Division:Engineering
Research Group:Automotive Engineering
Research Field:Automotive Combustion and Fuel Engineering (incl. Alternative/Renewable Fuels)
Objective Division:Transport
Objective Group:Environmentally Sustainable Transport
Objective Field:Environmentally Sustainable Transport not elsewhere classified
Author:Yu, H (Mr Hongjiang Yu)
Author:Goldsworthy, L (Dr Laurie Goldsworthy)
Author:Ghiji, M (Mr Mohammadmahdi Ghiji)
Author:Brandner, PA (Associate Professor Paul Brandner)
Author:Garaniya, V (Dr Vikram Garaniya)
ID Code:115572
Year Published:2017
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2017-03-31
Last Modified:2017-11-13
Downloads:0

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