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耦合LevelSet方法处理介质界面研究

DOI: 10.11858/gywlxb.2013.05.011, PP. 725-730

Keywords: 耦合粒子Level,Set方法,耦合Level,Set和Volume,of,Fluid方法,数值对比

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Abstract:

研究了耦合LevelSet(LS)方法处理介质界面算法,通过对比旋转流场和剪切流场下的界面捕捉情况,给出了各种不同方法在处理介质界面过程中的优缺点,分析了产生这种现象的原因。通过对比分析得到,耦合粒子LevelSet(ParticleLevelSet,PLS)方法以及耦合LevelSet和VOF(CoupledLevelSetandVolumeofFluid,CLSVOF)方法相比于单纯的LS方法,在流体守恒性质方面有很大的提高,PLS方法可以根据撒播粒子和精确追踪示踪粒子修正LS界面;而CLSVOF方法可以通过重构界面和体积输运,重新初始化LS函数。在实际物理应用中,PLS方法多次重新撒播示踪粒子会降低界面精度,且对每个示踪粒子的追踪需要加大CPU内存,而CLSVOF方法更加高效和合理。

References

[1]  Unverdi S, Tryggvason G. A front-tracking method for viscous incompressible multi-fluid flows [J] J Comput Phys, 1992, 100(1): 25-37.
[2]  Ma T B, Hao L, Ning J G. Interface reconstruction algorithm in Eulerian multi-material hydrodynamic numerical method [J]. Chinese Journal of Computational Physics, 2008, 25(2): 133-138. (in Chinese)
[3]  马天宝, 郝莉, 宁建国. Euler多物质流体动力学数值方法中的界面处理算法 [J]. 计算物理, 2008, 25(2): 133-138.
[4]  Liu C, Ma T B, Ning J G. Adaptive grid subdivision algorithm based on the youngs' interface reconstruction algorithm [J]. Chinese Journal of Computational Mechanics, 2010, 27(6): 1111-1116. (in Chinese)
[5]  刘春, 马天宝, 宁建国. 基于Youngs界面重构技术的自适应网格细分方法 [J]. 计算力学学报, 2010, 27(6): 1111-1116.
[6]  Scardovelli R, Zaleski S. Direct numerical simulation of free-surface and interfacial flow [J]. Ann Rev Fluid Mech, 1999, 31: 567-603.
[7]  Osher S, Fedkiw R. Level Set Methods and Dynamic Implicit Surfaces [M]. Newyork, USA: Springer Press, 2003.
[8]  Sethian J A. Level Set Methods and Fast Marching Methods [M]. Cambridge, UK: Cambridge University Press, 1999.
[9]  Enright D, Fedkiw R, Ferziger J, et al. A hybrid particle level set method for improved interface capturing [J]. J Comput Phys, 2002, 183(1): 83-116.
[10]  Sussman M, Puckett E G. A coupled level set and volume of fluid method for computing 3D and axisymmetric incompressible two-phase flows [J]. J Comput Phys, 2000, 162(2): 301-337.
[11]  van der Pijl S P, Segal A, Vuik C, et al. A mass-conserving Level-Set method for modeling of multi-phase flows [J]. Int J Numer Meth Fluids, 2005, 47: 339-361.

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