Enhancement of a 2D front-tracking algorithm with anon-uniform distribution of Lagrangian markers

JOURNAL OF COMPUTATIONAL PHYSICS

卷:358

Article

Febres, Mijail¹  Legendre, Dominique¹ 

[1] Univ Toulouse, IMFT, CNRS, INPT,UPS, Toulouse, France

关键词: 2D front-tracking;    Front reconstruction;    Non-uniform distribution;    Spurious velocities;   

DOI  :  10.1016/j.jcp.2017.12.021

来源: Elsevier

【 摘 要 】

The 2D front tracking method is enhanced to control the development of spurious velocities for non-uniform distributions of markers. The hybrid formulation of Shin et al. (2005) [7] is considered. A new tangent calculation is proposed for the calculation of the tension force at markers. A new reconstruction method is also proposed to manage non-uniform distributions of markers. We show that for both the static and the translating spherical drop test case the spurious currents are reduced to the machine precision. We also show that the ratio of the Lagrangian grid size Delta s over the Eulerian grid size Delta x has to satisfy Delta s/Delta x > 0.2 for ensuring such low level of spurious velocity. The method is found to provide very good agreement with benchmark test cases from the literature. (C) 2017 Elsevier Inc. All rights reserved.

【 授权许可】

Free