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Thermal-hydraulic analysis of Al2O3 nanofluid as a coolant in Canadian supercritical water reactor by porous media approach
Nuclear Engineering and Design ( IF 1.7 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.nucengdes.2020.110825
Danial Salehi , Gholamreza Jahanfarnia , Ehsan Zarifi

Abstract In this study, thermal-hydraulic analysis of Canadian Supercritical Water Reactor (Canadian SCWR) with nanofluid coolant has been done by porous media approach. In the applied analysis the derived conservation equations of mass, momentum and energy for coolant and conduction heat transfer equation for fuel and clad were discretised by finite volume method and solved numerically using C# program. Nanofluid coolant with various concentration of Al2O3 (Alumina) nanoparticle (up to 40% mass fraction) was selected for this study. Since in Canadian SCWR coolant and moderator are separated, higher mass fraction of nanofluid can be applied in this concept. The achieved results show that by increasing Al2O3 mass fraction, coolant heat transfer coefficient and average coolant temperature grow up in the middle of the core and pressure drop will be raised. Average clad and fuel temperature in the core was calculated. The results show that by using Alumina nanofluid with 40% nanoparticle mass fraction, maximum clad wall and fuel temperatures decrease about 20 °C and 30 °C respectively.

中文翻译:

Al2O3 纳米流体作为加拿大超临界水反应堆冷却剂的多孔介质热工水力分析

摘要 在本研究中,采用多孔介质方法对使用纳米流体冷却剂的加拿大超临界水反应堆 (Canadian SCWR) 进行了热工水力分析。在应用分析中,导出的冷却剂质量、动量和能量守恒方程以及燃料和复合材料的传导传热方程通过有限体积法离散,并使用C#程序进行数值求解。本研究选择了具有不同浓度的 Al2O3(氧化铝)纳米颗粒(质量分数高达 40%)的纳米流体冷却剂。由于在加拿大 SCWR 中冷却剂和减速剂是分开的,因此在这个概念中可以应用更高质量分数的纳米流体。取得的结果表明,通过增加 Al2O3 的质量分数,冷却剂传热系数和平均冷却剂温度在堆芯中部增大,压降会升高。计算了堆芯中的平均包层和燃料温度。结果表明,通过使用纳米颗粒质量分数为 40% 的氧化铝纳米流体,最大包层壁和燃料温度分别降低约 20 °C 和 30 °C。
更新日期:2020-11-01
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