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Sensitivity of VOF simulations of the liquid jet breakup to physical and numerical parameters

H. Grosshans ; Amirreza Movaghar (Institutionen för tillämpad mekanik, Förbränning) ; L. Cao ; Michael Oevermann (Institutionen för tillämpad mekanik, Förbränning) ; R. Z. Szasz ; L. Fuchs
Computers & Fluids (0045-7930). Vol. 136 (2016), p. 312-323.
[Artikel, refereegranskad vetenskaplig]

In this paper the characteristics of the primary breakup of a liquid jet is analyzed numerically. We applied the Volumes of Fluids (VOF) approach utilizing the Direction Averaged Curvature (DAC) model, to estimate the interface curvature, and the Direction Averaged Normal (DAN) model, to propagate the interface. While being used for the first time to predict liquid atomization, this methodology showed a high accuracy. The influence of varying the fluid properties, namely liquid-gas density and viscosity ratio, and injection conditions is discussed related to the required grid resolution. Resulting droplet sizes are compared to distributions obtained through the One-Dimensional Turbulence (ODT) model. (C) 2016 The Authors. Published by Elsevier Ltd.

Nyckelord: Multiphase flows; LES; Fluid properties; VOF/DAN/DAC; ODT



Denna post skapades 2016-11-02.
CPL Pubid: 244668

 

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Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Förbränning

Ämnesområden

Data- och informationsvetenskap

Chalmers infrastruktur