CFD analysis of thermal-hydraulic behaviour of the high performance light water reactor fuel assembly

Q4 Energy International Journal of Nuclear Energy Science and Technology Pub Date : 2017-11-21 DOI:10.1504/IJNEST.2017.10009088

L. Castro, R. Alfonso, Carlos R. García, J. Rosales, D. S. Dominguez

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引用次数: 5

Abstract

The High-Performance Light Water Reactor (HPLWR) is the European Supercritical Water-cooled Reactor design. In this paper, a thermal-hydraulic study of the HPLWR fuel assembly using CFD codes was carried out. The capability of the Reynolds Stress model of Speziale (SSG) and the k-ω Shear Stress Transport model (SST) for predicting the supercritical water heat transfer was evaluated. The axial temperature distributions of the fuel, cladding, coolant and moderator in the fuel assembly were obtained. Numerical results of the fuel temperature profiles were compared with that obtained by Waata (2006) and a good agreement was achieved. The cladding surface temperature profiles calculated with SSG and SST turbulence models are below the prescribed limits; however, hot spots in one sub-channel were found. The difference in the average thermal-hydraulic properties of the supercritical water calculated with SSG and SST was negligible. The fuel and cladding surface temperatures are higher when using the SST model.

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高性能轻水堆燃料组件热工水力学特性的CFD分析

高性能轻水堆（HPLWR）是欧洲超临界水冷堆的设计。本文利用CFD程序对HPLWR燃料组件进行了热工水力学研究。评价了Speziale雷诺应力模型（SSG）和k-ω剪切应力输运模型（SST）预测超临界水换热的能力。获得了燃料组件中燃料、包壳、冷却剂和慢化剂的轴向温度分布。将燃料温度分布的数值结果与Waata（2006）获得的结果进行了比较，并取得了良好的一致性。用SSG和SST湍流模型计算的包壳表面温度分布低于规定的极限；然而，在一个子通道中发现了热点。用SSG和SST计算的超临界水的平均热工水力性质的差异可以忽略不计。使用SST模型时，燃料和包壳表面温度较高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Nuclear Energy Science and Technology Energy-Nuclear Energy and Engineering

CiteScore

0.80

自引率

0.00%

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期刊介绍： Today, nuclear reactors generate nearly one quarter of the electricity in nations representing two thirds of humanity, and other nuclear applications are integral to many aspects of the world economy. Nuclear fission remains an important option for meeting energy requirements and maintaining a balanced worldwide energy policy; with major countries expanding nuclear energy"s role and new countries poised to introduce it, the key issue is not whether the use of nuclear technology will grow worldwide, even if public opinion concerning safety, the economics of nuclear power, and waste disposal issues adversely affect the general acceptance of nuclear power, but whether it will grow fast enough to make a decisive contribution to the global imperative of sustainable development.