Automatic Processing and Analysis of Submerged Jet Image in Suppression Pool

Peng Chuzhen; Chen Junyu; Wang Shengfei

doi:10.13832/j.jnpe.2023.01.0067

Volume 44 Issue 1

Feb. 2023

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Peng Chuzhen, Chen Junyu, Wang Shengfei. Automatic Processing and Analysis of Submerged Jet Image in Suppression Pool[J]. Nuclear Power Engineering, 2023, 44(1): 67-72. doi: 10.13832/j.jnpe.2023.01.0067

Citation:

Peng Chuzhen, Chen Junyu, Wang Shengfei. Automatic Processing and Analysis of Submerged Jet Image in Suppression Pool[J]. Nuclear Power Engineering, 2023, 44(1): 67-72. doi: 10.13832/j.jnpe.2023.01.0067

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Automatic Processing and Analysis of Submerged Jet Image in Suppression Pool

doi: 10.13832/j.jnpe.2023.01.0067

1.
School of Nuclear Science and Engineering, North China Electric Power University, Beijing, 102206, China
2.
Key Laboratory of Thermal Fluid Science and Engineering of MOE, Xi’an Jiaotong University, Xi’an, 710049, China

Received Date: 2022-01-19
Rev Recd Date: 2022-10-12
Publish Date: 2023-02-15

Abstract

Abstract

The surge caused by submerged jets in the suppression pool has a major impact on the reliability of the suppression system. And the bubble behavior is directly related to the mechanism of the surge. In order to better identify the bubble behavior in the surge phenomenon, an automatic image processing method of steam submerged jet based on improved watershed image segmentation algorithm is proposed. The differential model is established based on the pixel matrix, the two-dimensional information of the bubble is extracted and the three-dimensional information is approximately estimated, and then the variation of the jet volume is obtained. The bubble condensation period is extracted by using the gray variance information of the image. The algorithm improves the identification accuracy of jet bubbles. Compared with manual calibration, the error of image area recognition is controlled within 10%; It is proved that the relative error of image projection area calculated by the simplified ellipse model is small, and the extraction results of bubble parameters and condensation period are consistent with the experimental characterization and theoretical law.
- Suppression pool,
- Submerged jet,
- Direct contact condensation,
- Image algorithm

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References(16)

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