Simulation of cavitation bubble dynamics near defective wall surface based on OpenFOAM
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(1.College of Electrical Engineering, Guizhou University, Guiyang 550025, China;2.College of Mechanical and Transportation Engineering, China University of Petroleum-Beijing, Beijing 102249, China;3.Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum-Beijing, Beijing 102249, China)

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O351

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    Abstract:

    Based on OpenFOAM, the dynamic behavior of the cavitation bubble near the defective wall surface was investigated using a compressible cavitation bubble dynamics model for two-phase flow. The results demonstrate that the depth and shape of defects significantly affect the dynamics of the cavitation bubble. Compared with rectangular defects, wedge-shaped defects are more likely to concentrate energy when the cavitation bubble collapses, which results in more intense collapse and higher peak wall pressure. With the increase in defect depth, the peak wall pressure caused by the first collapse of the cavitation bubble initially decreases and then remains almost unchanged, while the pressure peak caused by the second collapse of the cavitation bubble continues to decrease.

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杜先荣,尹建勇,张永学,等.基于OpenFOAM的缺陷壁面附近空化泡动力学过程模拟[J].水利水电科技进展,2025,45(1):39-46.(DU Xianrong, YIN Jianyong, ZHANG Yongxue, et al. Simulation of cavitation bubble dynamics near defective wall surface based on OpenFOAM[J]. Advances in Science and Technology of Water Resources,2025,45(1):39-46.(in Chinese))

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History
  • Received:December 08,2023
  • Revised:
  • Adopted:
  • Online: January 24,2025
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