Characterization Analysis of Core Outlet Temperature Measurement in Nuclear Power Plants

被引：0

作者：

Xin S. ^{[1
]}

Wu D. ^{[1
]}

Shen Y. ^{[1
]}

Ren C. ^{[1
]}

Chen S. ^{[1
]}

机构：

[1] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu

来源：

Hedongli Gongcheng/Nuclear Power Engineering | 2023年 / 44卷 / 03期

关键词：

Computational fluid dynamics (CFD); Core outlet; Temperature measurement;

D O I：

10.13832/j.jnpe.2023.03.0237

中图分类号：

学科分类号：

摘要：

The core outlet temperature measurement is of great significance for mastering the reactor operation status. This paper analyzed the characterization of the core outlet temperature measurement by computational fluid dynamics (CFD) method. By simulating the structure of the fuel assembly and instrument tube, the coolant flow and temperature distributions in the instrument tube were obtained. The relationship between core outlet temperature characterization and fuel assembly power was obtained through quantitative analysis of core outlet temperature measurement results under 9 typical power distributions. The calculation results show that the average temperature of the measurement point is basically linearly related to the power of the fuel rod, and the temperature value of the measurement point increases with the increase of the power of the fuel rod, while the characterization of the temperature measurement becomes worse with the increase of the power of the fuel rod. The research results provide a certain basis for the calibration of outlet temperature measurement. © 2023 Yuan Zi Neng Chuban She. All rights reserved.

引用

页码：237 / 242

页数：5