燃料组件压降不仅是组件设计中的一个重要参数,而且也是堆芯热工设计和主循环泵设计的一个重要参数。对于特定的燃料组件,由于存在许多不确定因素,燃料组件真实压降很难通过计算获得,只能由试验测量得到。在水回路上进行了模拟快堆燃料组件压降试验,得到了燃料组件阻力特性曲线,给 Fuel assembly pressure drop is not only an important parameter in the design of the module, but also an important parameter of the core thermal design and the design of the main circulation pump. For a given fuel assembly, the true pressure drop across the fuel assembly is difficult to calculate due to many uncertainties and can only be measured experimentally. On the water circuit, the pressure drop test of the simulated fast reactor fuel assembly was carried out, the resistance characteristic curve of the fuel assembly was obtained,