中国物理B ›› 2024, Vol. 33 ›› Issue (6): 64701-064701.doi: 10.1088/1674-1056/ad3343

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Morphological analysis for thermodynamics of cavitation collapse near fractal solid wall

Minglei Shan(单鸣雷)1,†, Yu Yang(杨雨)2,‡, Xuefen Kan(阚雪芬)3, Cheng Yin(殷澄)1, and Qingbang Han(韩庆邦)1   

  1. 1 Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022, China;
    2 College of Information Science and Technology, Nanjing Forestry University, Nanjing 210000, China;
    3 Department of Transportation Engineering, Jiangsu Shipping College, Nantong 226000, China
  • 收稿日期:2023-12-21 修回日期:2024-02-13 接受日期:2024-03-13 出版日期:2024-06-18 发布日期:2024-06-18
  • 通讯作者: Minglei Shan, Yu Yang E-mail:shanming2003@126.com;yang1996@njfu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant Nos. 11874140 and 12174085), Basic Science (Natural Science) Research Project for the Universities of Jiangsu Province (Grant No. 23KJD140002), and the Natural Science Foundation of Nantong (Grant No. JC2023081).

Morphological analysis for thermodynamics of cavitation collapse near fractal solid wall

Minglei Shan(单鸣雷)1,†, Yu Yang(杨雨)2,‡, Xuefen Kan(阚雪芬)3, Cheng Yin(殷澄)1, and Qingbang Han(韩庆邦)1   

  1. 1 Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Hohai University, Changzhou 213022, China;
    2 College of Information Science and Technology, Nanjing Forestry University, Nanjing 210000, China;
    3 Department of Transportation Engineering, Jiangsu Shipping College, Nantong 226000, China
  • Received:2023-12-21 Revised:2024-02-13 Accepted:2024-03-13 Online:2024-06-18 Published:2024-06-18
  • Contact: Minglei Shan, Yu Yang E-mail:shanming2003@126.com;yang1996@njfu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant Nos. 11874140 and 12174085), Basic Science (Natural Science) Research Project for the Universities of Jiangsu Province (Grant No. 23KJD140002), and the Natural Science Foundation of Nantong (Grant No. JC2023081).

摘要: A fractal geometric boundary with natural wall features is introduced into a hybrid lattice-Boltzmann-method (LBM) multiphase model. The physical model of cavitation bubble collapse near the irregular geometric wall is established to study the thermodynamic characteristics of the bubble collapse. Due to the lack of periodicity, symmetry, spatial uniformity and obvious correlation in the LBM simulation of the bubble collapse near the fractal wall, the morphological analysis based on Minkowski functional is introduced into the thermodynamic investigation of cavitation bubble so as to analyze and obtain the effective information. The results show that the Minkowski functional method can employed to study the temperature information in complex physical fields hierarchically and quantitatively. The high/low temperature region of the cavitation flow is explored, and thermal effect between irregular and fractal geometric wall and cavitation bubble can be revealed. It illustrates that LBM and morphological analysis complement each other, and morphological analysis can also be used as an optional and potential tool in research field of complex multiphase flows.

关键词: lattice Boltzmann method, cavitation bubble, morphological analysis

Abstract: A fractal geometric boundary with natural wall features is introduced into a hybrid lattice-Boltzmann-method (LBM) multiphase model. The physical model of cavitation bubble collapse near the irregular geometric wall is established to study the thermodynamic characteristics of the bubble collapse. Due to the lack of periodicity, symmetry, spatial uniformity and obvious correlation in the LBM simulation of the bubble collapse near the fractal wall, the morphological analysis based on Minkowski functional is introduced into the thermodynamic investigation of cavitation bubble so as to analyze and obtain the effective information. The results show that the Minkowski functional method can employed to study the temperature information in complex physical fields hierarchically and quantitatively. The high/low temperature region of the cavitation flow is explored, and thermal effect between irregular and fractal geometric wall and cavitation bubble can be revealed. It illustrates that LBM and morphological analysis complement each other, and morphological analysis can also be used as an optional and potential tool in research field of complex multiphase flows.

Key words: lattice Boltzmann method, cavitation bubble, morphological analysis

中图分类号:  (Lattice gas)

  • 47.11.Qr
47.55.Ca (Gas/liquid flows) 47.55.dd (Bubble dynamics) 47.55.dp (Cavitation and boiling)