Physical modelling and advanced simulations of gas–liquid two-phase jet flows in atomization and sprays

This review attempts to summarize the physical models and advanced methods used in computational studies of gas–liquid two-phase jet flows encountered in atomization and spray processes. In traditional computational fluid dynamics (CFD) based on Reynolds-averaged Navier–Stokes (RANS) approach, physi...

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Bibliographic Details
Published in:Progress in energy and combustion science 2010-04, Vol.36 (2), p.131-167
Main Authors: Jiang, X., Siamas, G.A., Jagus, K., Karayiannis, T.G.
Format: Article
Language:English
Subjects:
Applied sciences
Atomization
Atomizing
Combustion. Flame
Computational fluid dynamics
Direct numerical simulation
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Large-eddy simulation
Liquid Jet
Mathematical models
Modelling
Simulation
Spray
Sprayers
Sprays
Theoretical studies. Data and constants. Metering
Two phase
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Summary:This review attempts to summarize the physical models and advanced methods used in computational studies of gas–liquid two-phase jet flows encountered in atomization and spray processes. In traditional computational fluid dynamics (CFD) based on Reynolds-averaged Navier–Stokes (RANS) approach, physical modelling of atomization and sprays is an essential part of the two-phase flow computation. In more advanced CFD such as direct numerical simulation (DNS) and large-eddy simulation (LES), physical modelling of atomization and sprays is still inevitable. For multiphase flows, there is no model-free DNS since the interactions between different phases need to be modelled. DNS of multiphase flows based on the one-fluid formalism coupled with interface tracking algorithms seems to be a promising way forward, due to the advantageous lower costs compared with a multi-fluid approach. In LES of gas–liquid two-phase jet flows, subgrid-scale (SGS) models for complex multiphase flows are very immature. There is a lack of well-established SGS models to account for the interactions between the different phases. In this paper, physical modelling of atomization and sprays in the context of CFD is reviewed with modelling assumptions and limitations discussed. In addition, numerical methods used in advanced CFD of atomization and sprays are discussed, including high-order numerical schemes. Other relevant issues of modelling and simulation of atomization and sprays such as nozzle internal flow, dense spray, and multiscale modelling are also briefly reviewed.
ISSN:0360-1285
1873-216X
DOI:10.1016/j.pecs.2009.09.002