Study on Heat Transfer Prediction Models of Precursory Cooling Region in Reflooding Phase of Tight Lattice

WU Dan; YU Hongxing

Mar. 2025

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WU Dan, YU Hongxing. Study on Heat Transfer Prediction Models of Precursory Cooling Region in Reflooding Phase of Tight Lattice[J]. Nuclear Power Engineering, 2012, 33(6): 61-64,71.

Citation:

WU Dan, YU Hongxing. Study on Heat Transfer Prediction Models of Precursory Cooling Region in Reflooding Phase of Tight Lattice[J]. Nuclear Power Engineering, 2012, 33(6): 61-64,71.

WU Dan, YU Hongxing. Study on Heat Transfer Prediction Models of Precursory Cooling Region in Reflooding Phase of Tight Lattice[J]. Nuclear Power Engineering, 2012, 33(6): 61-64,71.

Citation:

WU Dan, YU Hongxing. Study on Heat Transfer Prediction Models of Precursory Cooling Region in Reflooding Phase of Tight Lattice[J]. Nuclear Power Engineering, 2012, 33(6): 61-64,71.

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Study on Heat Transfer Prediction Models of Precursory Cooling Region in Reflooding Phase of Tight Lattice

WU Dan^1,2,
YU Hongxing²

1. Department of engineering physics, Tsinghua University, Beijing, 100084, China;
2. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Nuclear Power Institute of China, Chengdu, 610041, China

Received Date: 2011-09-23
Rev Recd Date: 2012-08-01

Available Online: 2025-03-08

Abstract

Abstract

On the basis of the reflooding experiment NEPTUN-LWHCR performed in Switzerland,this paper summarized the characteristics of the reflooding phase of tight lattice,and analyzed the reasons for the high peak clad temperature.A new heat transfer model of precursory cooling is established.It is proposed that the steam cooling is relatively poor in the precursory cooling to make the peak clad temperature higher.Through validating this mew model by calculating the peak clad temperature,it can be concluded that the new model is reasonable.
- Tight lattice,
- Reflooding,
- NEPTUN-LWHCR,
- Precursory cooling