广西师范大学学报（自然科学版） ›› 2020, Vol. 38 ›› Issue (2): 87-95.doi: 10.16088/j.issn.1001-6600.2020.02.010

• CCIR2019 • 上一篇    下一篇

一种基于化学势LBM多相流模型的改进方法

赵金想, 陈燕雁, 覃章荣, 张超英*   

  1. 广西师范大学广西多源信息挖掘与安全重点实验室,广西桂林541004
  • 收稿日期:2019-01-04 发布日期:2020-04-02
  • 通讯作者: 张超英(1958—),男,广西永福人,广西师范大学教授。E-mail:zhangcy@gxnu.edu.cn
  • 基金资助:
    国家自然科学基金(11462003, 11862003);广西自然科学基金重点项目(2017GXNSFDA198038);广西自然科学基金(2018JJA110023)

A Modified Method Based on Chemical-PotentialLBM Multiphase Flow Model

ZHAO Jinxiang, CHEN Yanyan, QIN Zhangrong, ZHANG Chaoying*   

  1. Guangxi Key Laboratory of Multi-Source Information Mining and Security, Guangxi Normal University,Guilin Guangxi 541004, China
  • Received:2019-01-04 Published:2020-04-02

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摘要： 在基于化学势的晶格Boltzmann多相流模型中,通过引入“折合变量”,提出一种改进的化学势多相流模型。对该模型的性能进行验证,结果发现:与原化学势模型相比,使用改进模型模拟的温度范围、气液两相密度比得到较大扩展,稳定性显著提高,有效地降低了虚速度的影响。该模型也能很好地符合热力学一致性和满足Laplace定律,具有较好的实用性和应用前景。

关键词: 晶格Boltzmann方法, 化学势, 折合变量, 热力学一致性

Abstract: Based on the chemical-potential lattice Boltzmann multiphase flow model, a modified chemical-potential multiphase flow model is proposed by introducing “reduced variables”. The performance of the model is verified, and the results show that, compared with the original chemical potential model, the temperature range and the gas-liquid density ratio of the modified model are greatly extended, the stability is remarkably improved, and the effect of spurious current is effectively reduced. The model is in good agreement with the thermodynamic consistency, meets with Laplace’s law, and has practical and applicable prospects.

Key words: lattice Boltzamnn method, chemical potential, reduced variables, thermodynamic consistency

中图分类号: 

  • O35
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