Toward integrating high-fidelity CFD approaches in the thermal-hydraulic analysis of turbulent dry cask systems

IF 1.9 3区 工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY
Sinan Okyay , Elia Merzari , Derek Gaston , Fande Kong , Paolo Balestra
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引用次数: 0

Abstract

Nuclear power plants have been supplying resilient and reliable electricity for decades, contributing to energy independence of the U.S.. However, nuclear waste management remains one of the most significant challenges in the industry. The safety of dry cask storage systems relies heavily on their thermal-hydraulic performance. Computational Fluid Dynamics (CFD) simulations are often used to demonstrate this performance and ensure that the system design meets safety standards. This study presents reduced numerical models for various types of dry cask systems. These numerical models can produce efficient and fast results based on the employed modeling strategies. Additionally, the study uses a novel approach to high-fidelity simulations to evaluate modeling assumptions in dry cask modeling. Large Eddy Simulations (LES) are used for this purpose, particularly in regions where fluid velocity is relatively high and the turbulence characteristics become important. The results of these high-fidelity simulations will enhance the interpretation of outcomes produced from a lower-fidelity CFD model.
在湍流干桶系统热水力分析中整合高保真CFD方法的研究
几十年来,核电站一直提供弹性和可靠的电力,为美国的能源独立做出了贡献。然而,核废料管理仍然是该行业面临的最重大挑战之一。干桶储水系统的安全性在很大程度上取决于其热工性能。计算流体动力学(CFD)模拟通常用于证明这种性能,并确保系统设计符合安全标准。本研究提出了各种类型的干桶系统的简化数值模型。根据所采用的建模策略,这些数值模型可以得到高效、快速的结果。此外,该研究使用了一种新颖的高保真度模拟方法来评估干桶建模中的建模假设。大涡模拟(LES)用于此目的,特别是在流体速度相对较高且湍流特性变得重要的区域。这些高保真度模拟的结果将增强对低保真度CFD模型产生的结果的解释。
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
Annals of Nuclear Energy
Annals of Nuclear Energy 工程技术-核科学技术
CiteScore
4.30
自引率
21.10%
发文量
632
审稿时长
7.3 months
期刊介绍: Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.
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