Numerical Simulation of Critical Flow in a Narrow Rectangular Channel

Yin Ling; Sun Yunda; Gong Shengjie

doi:10.13832/j.jnpe.2022.04.0005

Volume 43 Issue 4

Aug. 2022

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Yin Ling, Sun Yunda, Gong Shengjie. Numerical Simulation of Critical Flow in a Narrow Rectangular Channel[J]. Nuclear Power Engineering, 2022, 43(4): 5-10. doi: 10.13832/j.jnpe.2022.04.0005

Citation:

Yin Ling, Sun Yunda, Gong Shengjie. Numerical Simulation of Critical Flow in a Narrow Rectangular Channel[J]. Nuclear Power Engineering, 2022, 43(4): 5-10. doi: 10.13832/j.jnpe.2022.04.0005

Yin Ling, Sun Yunda, Gong Shengjie. Numerical Simulation of Critical Flow in a Narrow Rectangular Channel[J]. Nuclear Power Engineering, 2022, 43(4): 5-10. doi: 10.13832/j.jnpe.2022.04.0005

Citation:

Yin Ling, Sun Yunda, Gong Shengjie. Numerical Simulation of Critical Flow in a Narrow Rectangular Channel[J]. Nuclear Power Engineering, 2022, 43(4): 5-10. doi: 10.13832/j.jnpe.2022.04.0005

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Numerical Simulation of Critical Flow in a Narrow Rectangular Channel

doi: 10.13832/j.jnpe.2022.04.0005

School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China

Received Date: 2021-06-08
Accepted Date: 2021-08-27
Rev Recd Date: 2021-08-27
Publish Date: 2022-08-04

Abstract

Abstract

The main mechanism of coolant leakage through micro-cracks is critical flow, and accurate prediction of critical flow is the key to realize the application of Leak-Before-Break (LBB). Based on the cavitation model, the critical flow in a narrow rectangular channel is numerically simulated, and the influence of the constant term (C) representing the bubble radius and nucleation site density on the critical flow is discussed. The results show that when C=1.25, the simulation results are in good agreement with the experimental values; Within the range of experimental conditions, the error between the simulation results of critical flow and the experimental values is within ± 15%; The modified cavitation model can be used to simulate and calculate the critical flow under upstream temperature and pressure conditions.
- Critical flow,
- Cavitation model,
- Bubble radius,
- Nucleation site density,
- Mass flow

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References(15)

References

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