A significant role for a future nuclear carbon-free energy production is attributed to fast reactors, mostly employing a liquid metal as a coolant. This paper summarizes the efforts that have been undertaken in collaborative projects sponsored by the European Commission in the past 20 years in the fields of liquid-metal heat transfer modeling, fuel assembly and core thermal hydraulics, pool and system thermal hydraulics, and establishment of best practice guidelines and verification, validation, and uncertainty quantification (UQ). The achievements in these fields will be presented along with the prospects on topics which will be studied collaboratively in Europe in the years to come. These prospects include further development of heat transfer models for applied computational fluid dynamics (CFD), further analysis of the consequences of fuel assembly blockages on coolant flow and temperature, analysis of the thermal hydraulic effects in deformed fuel assemblies, extended validation of three-dimensional pool thermal hydraulic CFD models, and further development and validation of multi-scale system thermal hydraulic methods.

快速反应堆主要是使用液态金属作为冷却剂，这对未来无核无碳能源的生产起着重要作用。本文总结了欧盟委员会在过去20年中在液态金属传热建模，燃料组件和堆芯热液压，池和系统热液压以及建立最佳解决方案领域中在合作项目中所做的努力。实践准则以及验证，确认和不确定性量化（UQ）。将介绍这些领域的成就以及未来几年在欧洲将共同研究的主题前景。这些前景包括进一步开发用于应用计算流体动力学（CFD）的传热模型，