Open Access

ARTICLE

A New Interface Identification Technique Based on Absolute Density Gradient for Violent Flows

Yan Zhou¹, Qingwei Ma^*

1 School of Mathematics, Computer Science and Engineering, City University London , Northampton Square, London, EC1V 0HB.

*Corresponding Author: Qingwei Ma. Email: .

Computer Modeling in Engineering & Sciences 2018, 115(2), 131-147. https://doi.org/10.3970/cmes.2018.00249

Abstract

An identification technique for sharp interface and penetrated isolated particles is developed for simulating two-dimensional, incompressible and immiscible two-phase flows using meshless particle methods in this paper. This technique is based on the numerically computed density gradient of fluid particles and is suitable for capturing large interface deformation and even topological changes such as merging and breaking up of phases. A number of assumed particle configurations will be examined using the technique, including these with different level of randomness of particle distribution. The tests will show that the new technique can correctly identify almost all the interface and isolated particles, and also show that it is better than other existing popular methods tested.

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Keywords

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