Experimental Study on Edge Blockage Accidents and Central Blockage Accidents in a Rectangular Channel

Yuan Dongdong; Deng Jian; Tan Sichao; Zhu Jiahong; Li Chengwei; Qiao Shouxu

doi:10.13832/j.jnpe.2022.06.0066

Volume 43 Issue 6

Dec. 2022

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Yuan Dongdong, Deng Jian, Tan Sichao, Zhu Jiahong, Li Chengwei, Qiao Shouxu. Experimental Study on Edge Blockage Accidents and Central Blockage Accidents in a Rectangular Channel[J]. Nuclear Power Engineering, 2022, 43(6): 66-72. doi: 10.13832/j.jnpe.2022.06.0066

Citation:

Yuan Dongdong, Deng Jian, Tan Sichao, Zhu Jiahong, Li Chengwei, Qiao Shouxu. Experimental Study on Edge Blockage Accidents and Central Blockage Accidents in a Rectangular Channel[J]. Nuclear Power Engineering, 2022, 43(6): 66-72. doi: 10.13832/j.jnpe.2022.06.0066

Citation:

Yuan Dongdong, Deng Jian, Tan Sichao, Zhu Jiahong, Li Chengwei, Qiao Shouxu. Experimental Study on Edge Blockage Accidents and Central Blockage Accidents in a Rectangular Channel[J]. Nuclear Power Engineering, 2022, 43(6): 66-72. doi: 10.13832/j.jnpe.2022.06.0066

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Experimental Study on Edge Blockage Accidents and Central Blockage Accidents in a Rectangular Channel

doi: 10.13832/j.jnpe.2022.06.0066

Yuan Dongdong^{1, 2
,},
Deng Jian³,
Tan Sichao^{1, 2
,
,},
Zhu Jiahong^{1, 2},
Li Chengwei^{1, 2},
Qiao Shouxu^{1, 2}

1.
College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, China
2.
Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin, 150001, China
3.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2021-11-15
Rev Recd Date: 2022-01-02
Publish Date: 2022-12-14

Abstract

Abstract

To obtain the evolution law of the flow field under the rectangular channel blockage accident, the particle image velocimetry (PIV) technology is adopted to carry out a full-flow-field visual experimental study on the vertical narrow rectangular channel blockage accident with a gap of 3 mm to compare and analyze the difference of the flow field structure under the condition of edge blockage and central blockage at 70% blockage rate. It is found that the flow field structure of edge blockage is more complex than that of central blockage, the edge blockage condition will form a larger backflow area due to channel blockage, and a wall separation vortex will be formed at high Reynolds number (Re); the edge blockage is more unfavorable to the removal of fluid heat, and the vorticity of the vortex in the backflow area is smaller, the fluidity of the vortex is worse, and the motion frequency is more complex; At the same time, the variation trend of vortex structure in edge blockage and central blockage with Re is also completely opposite.
- Particle image velocimetry (PIV),
- Power spectral density (PSD),
- Blockage accident,
- Plate fuel element,
- Rectangular channel

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References(13)

References

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