Numerical Prediction of Critical Heat Flux in Narrow Rectangular Channels

ZHOU Lei; LIU Xiangfeng; YAN Xiao; HUANG Yanping; CHEN Bingde

Mar. 2025

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ZHOU Lei, LIU Xiangfeng, YAN Xiao, HUANG Yanping, CHEN Bingde. Numerical Prediction of Critical Heat Flux in Narrow Rectangular Channels[J]. Nuclear Power Engineering, 2011, 32(4): 46-51.

Citation:

ZHOU Lei, LIU Xiangfeng, YAN Xiao, HUANG Yanping, CHEN Bingde. Numerical Prediction of Critical Heat Flux in Narrow Rectangular Channels[J]. Nuclear Power Engineering, 2011, 32(4): 46-51.

ZHOU Lei, LIU Xiangfeng, YAN Xiao, HUANG Yanping, CHEN Bingde. Numerical Prediction of Critical Heat Flux in Narrow Rectangular Channels[J]. Nuclear Power Engineering, 2011, 32(4): 46-51.

Citation:

ZHOU Lei, LIU Xiangfeng, YAN Xiao, HUANG Yanping, CHEN Bingde. Numerical Prediction of Critical Heat Flux in Narrow Rectangular Channels[J]. Nuclear Power Engineering, 2011, 32(4): 46-51.

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Numerical Prediction of Critical Heat Flux in Narrow Rectangular Channels

1. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610041, China;
2. China International Engineering Information Company, Beijing, 100048, China;
3. Department of Engineering Physics, Tsinghua University, Beijing, 100086, China

Received Date: 2010-03-25
Available Online: 2025-03-08

Abstract

Abstract

Results calculated by the Weisman model and Kwon model are compared and analyzed based on the existing experimental data points.It reveals that the two models have similar tendency for the CHF ratio distribution while the Kwon model has little scattering thus is more accurate.Since both the existing bubble crowding models predict CHF in narrow rectangular channels with poor accuracy,they are not pro-posed to be used for NRCs directly.Considering the characteristics of a narrow rectangular channel,the Kwon model is modified and extended.The improved model has better prediction accuracy and eliminates the systematic deviation from the experimental results.
- Narrow rectangular channel,
- Critical Heat Flux,
- Numerical model