A three-dimensional one-layer particle level set method
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 5 December 2019
Issue publication date: 16 June 2020
Abstract
Purpose
Moving interface problems exist commonly in nature and industry, and the main difficulty is to represent the interface. The purpose of this paper is to capture the accurate interface, a novel three-dimensional one-layer particle level set (OPLS) method is presented by introducing Lagrangian particles to reconstruct the seriously distorted level set function.
Design/methodology/approach
First, the interface is captured by the level set method. Then, the interface is corrected with only one-layer particles advected with the flow to ensure that the level set function value of the particle is equal to 0. When interfaces are merged, all particles in merged regions are deleted, while the added particles near the generated interface are used to determine the interface as the interface is separated.
Findings
The OPLS method is validated with well-known benchmark examples, such as the long-term advection of a sphere, the rotation of a three-dimensional slotted disk and sphere, single vortex in a box, sphere merging and separation, deformation of a sphere. The simulation results indicate that the proposed method is found to be highly reliable and accurate.
Originality/value
This method exhibits excellent conservation of the area bounded by the interface. The extraordinary performance is also shown in dealing with complex interface topological changes.
Keywords
Citation
Zhao, L., Mu, K., Mao, J., Hongvan, K. and Peng, D. (2020), "A three-dimensional one-layer particle level set method", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 30 No. 7, pp. 3653-3684. https://doi.org/10.1108/HFF-07-2019-0547
Publisher
:Emerald Publishing Limited
Copyright © 2019, Emerald Publishing Limited