CFD Calculation and Analysis of Boiling Heat Transfer of Full-length Fuel Bundle with Bent Rod

被引：0

作者：

Ren B. ^{[1
]}

Gan F. ^{[1
]}

Yang P. ^{[1
]}

机构：

[1] Shanghai Nuclear Engineering Research & Design Institute Co., Ltd., Shanghai

来源：

Hedongli Gongcheng/Nuclear Power Engineering | 2022年 / 43卷 / 06期

关键词：

Bending; Boiling; Computational fluid dynamics(CFD); Fuel bundle;

D O I：

10.13832/j.jnpe.2022.06.0043

中图分类号：

学科分类号：

摘要：

The boiling heat transfer in a 5 × 5 full-length fuel bundle containing a bent fuel rod is simulated by computational fluid dynamics (CFD) analysis. The calculation is based on the Eulerian-Eulerian two-fluid model and the improved wall boiling model, and the calculation method is verified based on the test data in the PSBT benchmark task. The calculated average void fraction of the cross section is in good agreement with the test data, which indicates the reliability of the existing calculation methods. Based on the calculation results, the effects of bent rod on the flow field, temperature field, void fraction and other key parameters in the bundle channel are investigated. The research results show that the existence of bent fuel rod has no significant impact on the cross section transverse flow, fluid temperature, void fraction, etc., but the increase of the surface temperature of bent fuel rod will also lead to bubble aggregation, which increases the risk of critical heat flux (CHF). © 2022 Yuan Zi Neng Chuban She. All rights reserved.

引用

页码：43 / 50

页数：7

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