Applied Mathematics and Mechanics (English Edition) ›› 2019, Vol. 40 ›› Issue (10): 1487-1508.doi: https://doi.org/10.1007/s10483-019-2523-5

• 论文 • 上一篇    下一篇

A hybrid subcell-remapping algorithm for staggered multi-material arbitrary Lagrangian-Eulerian methods

Haihua YANG, Ping ZHANG   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • 收稿日期:2019-01-28 修回日期:2019-05-09 发布日期:2019-09-17
  • 通讯作者: Ping ZHANG E-mail:zhang_ping@iapcm.ac.cn
  • 基金资助:
    Project supported by the China Postdoctoral Science Foundation (No. 2017M610823)

A hybrid subcell-remapping algorithm for staggered multi-material arbitrary Lagrangian-Eulerian methods

Haihua YANG, Ping ZHANG   

  1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2019-01-28 Revised:2019-05-09 Published:2019-09-17
  • Contact: Ping ZHANG E-mail:zhang_ping@iapcm.ac.cn
  • Supported by:
    Project supported by the China Postdoctoral Science Foundation (No. 2017M610823)

摘要: A new flux-based hybrid subcell-remapping algorithm for staggered multimaterial arbitrary Lagrangian-Eulerian (MMALE) methods is presented. This new method is an effective generalization of the original subcell-remapping method to the multi-material regime (LOUBÈRE, R. and SHASHKOV, M. A subcell remapping method on staggered polygonal grids for arbitrary-Lagrangian-Eulerian methods. Journal of Computational Physics, 209, 105-138 (2005)). A complete remapping procedure of all fluid quantities is described detailedly in this paper. In the pure material regions, remapping of mass and internal energy is performed by using the original subcell-remapping method. In the regions near the material interfaces, remapping of mass and internal energy is performed with the intersection-based fluxes where intersections are performed between the swept regions and pure material polygons in the Lagrangian mesh, and an approximate approach is then introduced for constructing the subcell mass fluxes. In remapping of the subcell momentum, the mass fluxes are used to construct the momentum fluxes by multiplying a reconstructed velocity in the swept region. The nodal velocity is then conservatively recovered. Some numerical examples simulated in the full MMALE regime and several purely cyclic remapping examples are presented to prove the properties of the remapping method.

关键词: multi-material arbitrary Lagrangian-Eulerian (MMALE), subcell remapping method, hybrid remapping method

Abstract: A new flux-based hybrid subcell-remapping algorithm for staggered multimaterial arbitrary Lagrangian-Eulerian (MMALE) methods is presented. This new method is an effective generalization of the original subcell-remapping method to the multi-material regime (LOUBÈRE, R. and SHASHKOV, M. A subcell remapping method on staggered polygonal grids for arbitrary-Lagrangian-Eulerian methods. Journal of Computational Physics, 209, 105-138 (2005)). A complete remapping procedure of all fluid quantities is described detailedly in this paper. In the pure material regions, remapping of mass and internal energy is performed by using the original subcell-remapping method. In the regions near the material interfaces, remapping of mass and internal energy is performed with the intersection-based fluxes where intersections are performed between the swept regions and pure material polygons in the Lagrangian mesh, and an approximate approach is then introduced for constructing the subcell mass fluxes. In remapping of the subcell momentum, the mass fluxes are used to construct the momentum fluxes by multiplying a reconstructed velocity in the swept region. The nodal velocity is then conservatively recovered. Some numerical examples simulated in the full MMALE regime and several purely cyclic remapping examples are presented to prove the properties of the remapping method.

Key words: multi-material arbitrary Lagrangian-Eulerian (MMALE), subcell remapping method, hybrid remapping method

中图分类号: 

APS Journals | CSTAM Journals | AMS Journals | EMS Journals | ASME Journals