@Article{CiCP-16-403,
author = {Thibault Pringuey and R. Stewart Cant},
title = {Robust Conservative Level Set Method for 3D Mixed-Element Meshes — Application to LES of Primary Liquid-Sheet Breakup},
journal = {Communications in Computational Physics},
year = {2014},
volume = {16},
number = {2},
pages = {403--439},
abstract = {<p style="text-align: justify;">In this article we detail the methodology developed to construct an efficient
interface description technique — the robust conservative level set (RCLS) —
to simulate multiphase flows on mixed-element unstructured meshes while conserving
mass to machine accuracy. The approach is tailored specifically for industry as the
three-dimensional unstructured approach allows for the treatment of very complex
geometries. In addition, special care has been taken to optimise the trade-off between
accuracy and computational cost while maintaining the robustness of the numerical
method. This was achieved by solving the transport equations for the liquid volume
fraction using a WENO scheme for polyhedral meshes and by adding a flux-limiter
algorithm. The performance of the resulting method has been compared against established
multiphase numerical methods and its ability to capture the physics of multiphase
flows is demonstrated on a range of relevant test cases. Finally, the RCLS
method has been applied to the simulation of the primary breakup of a flat liquid sheet
of kerosene in co-flowing high-pressure gas. This quasi-DNS/LES computation was
performed at relevant aero-engine conditions on a three-dimensional mixed-element
unstructured mesh. The numerical results have been validated qualitatively against
theoretical predictions and experimental data. In particular, the expected breakup
regime was observed in the simulation results. Finally, the computation reproduced
faithfully the breakup length predicted by a correlation based on experimental data.
This constitutes a first step towards a quantitative validation.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.140213.210214a},
url = {http://global-sci.org/intro/article_detail/cicp/7048.html}
}