Structure Optimization of Bottom Nozzle for Flow Resistance- Filtration-Bearing Performance

Zhang Bo; Yuan Pan; Xiao Zhong; Guang Honghao; Chai Zhenhong; Duan Xin; Xin Yong; Zhu Fawen; Sun Kun; Li Baotong

doi:10.13832/j.jnpe.2025.01.0225

Volume 46 Issue 1

Feb. 2025

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Article Navigation > Nuclear Power Engineering > 2025 > 46(1): 225-231

Zhang Bo, Yuan Pan, Xiao Zhong, Guang Honghao, Chai Zhenhong, Duan Xin, Xin Yong, Zhu Fawen, Sun Kun, Li Baotong. Structure Optimization of Bottom Nozzle for Flow Resistance- Filtration-Bearing Performance[J]. Nuclear Power Engineering, 2025, 46(1): 225-231. doi: 10.13832/j.jnpe.2025.01.0225

Citation:

Zhang Bo, Yuan Pan, Xiao Zhong, Guang Honghao, Chai Zhenhong, Duan Xin, Xin Yong, Zhu Fawen, Sun Kun, Li Baotong. Structure Optimization of Bottom Nozzle for Flow Resistance- Filtration-Bearing Performance[J]. Nuclear Power Engineering, 2025, 46(1): 225-231. doi: 10.13832/j.jnpe.2025.01.0225

Citation:

Zhang Bo, Yuan Pan, Xiao Zhong, Guang Honghao, Chai Zhenhong, Duan Xin, Xin Yong, Zhu Fawen, Sun Kun, Li Baotong. Structure Optimization of Bottom Nozzle for Flow Resistance- Filtration-Bearing Performance[J]. Nuclear Power Engineering, 2025, 46(1): 225-231. doi: 10.13832/j.jnpe.2025.01.0225

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Structure Optimization of Bottom Nozzle for Flow Resistance- Filtration-Bearing Performance

doi: 10.13832/j.jnpe.2025.01.0225

1.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China
2.
School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, 710049, China

Received Date: 2024-04-06
Rev Recd Date: 2024-07-10
Publish Date: 2025-02-15

Abstract

Abstract

To improve the comprehensive performance of the bottom nozzle, including coolant pressure drop, debris filtration, and load-bearing of structure, a multi-objective optimization approach was proposed to optimize the key dimensional parameters of the bottom nozzle with the goal of coolant pressure drop and debris filtration efficiency. Based on the approach, size optimization was conducted using the hexagonal bottom nozzle as an example. The results showed that the pressure drop and filtration efficiency were optimized by 12.5% and 6.3%, respectively. Meanwhile, the maximum stress was reduced by 14.0%, confirming a significant enhancement of the comprehensive performance. Furthermore, the multi-objective optimization approach is universal for the structural optimization of various types of bottom nozzle to improve its comprehensive performance.
- Bottom nozzle,
- Multi-objective optimization,
- Pressure drop,
- Debris filtration,
- Proxy model,
- Particle swarm optimization

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References(15)

References

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