中国物理B ›› 2016, Vol. 25 ›› Issue (6): 64701-064701.doi: 10.1088/1674-1056/25/6/064701

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Gradient-augmented hybrid interface capturing method for incompressible two-phase flow

Zheng Fu(付峥), Shi-Yu Wu(吴士玉), Kai-Xin Liu(刘凯欣)   

  1. 1 Institution of Applied Physics and Computational Mathematics, Beijing 100094, China;
    2 LTCS and Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China;
    3 Center for Applied Physics and Technology, Peking University, Beijing 100871, China
  • 收稿日期:2015-11-06 修回日期:2016-01-25 出版日期:2016-06-05 发布日期:2016-06-05
  • 通讯作者: Kai-Xin Liu E-mail:kliu@pku.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 10972010, 11028206, 11371069, 11372052, 11402029, and 11472060), the Science and Technology Development Foundation of China Academy of Engineering Physics (CAEP), China (Grant No. 2014B0201030), and the Defense Industrial Technology Development Program of China (Grant No. B1520132012).

Gradient-augmented hybrid interface capturing method for incompressible two-phase flow

Zheng Fu(付峥)1, Shi-Yu Wu(吴士玉)1, Kai-Xin Liu(刘凯欣)2,3   

  1. 1 Institution of Applied Physics and Computational Mathematics, Beijing 100094, China;
    2 LTCS and Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China;
    3 Center for Applied Physics and Technology, Peking University, Beijing 100871, China
  • Received:2015-11-06 Revised:2016-01-25 Online:2016-06-05 Published:2016-06-05
  • Contact: Kai-Xin Liu E-mail:kliu@pku.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 10972010, 11028206, 11371069, 11372052, 11402029, and 11472060), the Science and Technology Development Foundation of China Academy of Engineering Physics (CAEP), China (Grant No. 2014B0201030), and the Defense Industrial Technology Development Program of China (Grant No. B1520132012).

摘要:

Motivated by inconveniences of present hybrid methods, a gradient-augmented hybrid interface capturing method (GAHM) is presented for incompressible two-phase flow. A front tracking method (FTM) is used as the skeleton of the GAHM for low mass loss and resources. Smooth eulerian level set values are calculated from the FTM interface, and are used for a local interface reconstruction. The reconstruction avoids marker particle redistribution and enables an automatic treatment of interfacial topology change. The cubic Hermit interpolation is employed in all steps of the GAHM to capture subgrid structures within a single spacial cell. The performance of the GAHM is carefully evaluated in a benchmark test. Results show significant improvements of mass loss, clear subgrid structures, highly accurate derivatives (normals and curvatures) and low cost. The GAHM is further coupled with an incompressible multiphase flow solver, Super CE/SE, for more complex and practical applications. The updated solver is evaluated through comparison with an early droplet research.

关键词: interface capturing, hybrid method, mass loss, incompressible two-phase flow

Abstract:

Motivated by inconveniences of present hybrid methods, a gradient-augmented hybrid interface capturing method (GAHM) is presented for incompressible two-phase flow. A front tracking method (FTM) is used as the skeleton of the GAHM for low mass loss and resources. Smooth eulerian level set values are calculated from the FTM interface, and are used for a local interface reconstruction. The reconstruction avoids marker particle redistribution and enables an automatic treatment of interfacial topology change. The cubic Hermit interpolation is employed in all steps of the GAHM to capture subgrid structures within a single spacial cell. The performance of the GAHM is carefully evaluated in a benchmark test. Results show significant improvements of mass loss, clear subgrid structures, highly accurate derivatives (normals and curvatures) and low cost. The GAHM is further coupled with an incompressible multiphase flow solver, Super CE/SE, for more complex and practical applications. The updated solver is evaluated through comparison with an early droplet research.

Key words: interface capturing, hybrid method, mass loss, incompressible two-phase flow

中图分类号:  (Computational methods in fluid dynamics)

  • 47.11.-j
47.55.D- (Drops and bubbles)