| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Study on adaptive mesh method in the problem of underwater shock waves near water surface |
| Fang Wang(王芳)1, Xinpeng Yuan(原新鹏)2,†, and Jianzhu An(安建祝)1 |
1 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China; 2 State Key Laboratory of Severe Weather Meteorological Science and Technology, Chinese Academy of Meteorological Sciences, Meteorological Administration, Beijing 100081, China |
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Abstract This paper focuses on the application of the adaptive mesh method in the study of underwater shock waves near the water surface. By integrating theoretical analysis with a five-equation model under axisymmetric coordinates, we developed an optimized computational framework for multi-material fluid simulations. The moving mesh method (r-method) is used to accurately capture complex underwater shock wave systems. Multiple numerical experiments are conducted, including deep-water explosions, near-surface explosions for both spherical charge and cylindrical charge, and regular-irregular reflection interface calculations. The results show that compared to the fixed mesh method, the adaptive mesh method provides results closer to the theoretical values and achieves local high-resolution computation of multi-material fluids. By adjusting the adaptive function, different mesh refinement effects can be obtained. This method also has certain advantages in calculating the regular-irregular reflection interface in underwater explosions. This study establishes a validated computational framework for underwater explosion research, enhancing the predictive accuracy for underwater shock wave propagation in engineering assessments and providing new insights into the fundamental physics of multi-material explosion phenomena.
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Received: 24 October 2024
Revised: 26 February 2025
Accepted manuscript online: 11 March 2025
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PACS:
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47.40.-x
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(Compressible flows; shock waves)
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47.40.Nm
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(Shock wave interactions and shock effects)
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02.70.-c
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(Computational techniques; simulations)
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02.60.Cb
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(Numerical simulation; solution of equations)
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| Fund: Project supported by the Overall Planning and Development Project of China Academy of Engineering Physics (CAEP) (Grant No. TCGH0909), the Science and Technology Development Fund of the Chinese Academy of Meteorological Sciences (CAMS) (Grant No. 2023KJ048), and the Basic Research Fund of the Chinese Academy of Meteorological Sciences (Grant No. 2023Z001). |
Corresponding Authors:
Xinpeng Yuan
E-mail: yuanxp@cma.gov.cn,yuanxinpeng1987@163.com
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Cite this article:
Fang Wang(王芳), Xinpeng Yuan(原新鹏), and Jianzhu An(安建祝) Study on adaptive mesh method in the problem of underwater shock waves near water surface 2025 Chin. Phys. B 34 064701
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