金属燃料能源因为其较高的能量密度成为当今水下热动力系统的一个重要发展方向.基于此,文中针对Li/SF6热管反应器内部的螺旋管蒸发器,采用一维分布参数法建立动态模型,对不同输入参数变化进行了仿真计算,并将结果与移动边界法计算结果进行对比.分析表明,一维分布参数模型所得结果相比移动边界模型与实际系统具有更高的贴合度,能够更为准确地反映系统的动态响应过程,并通过合适的公式推导和算法设计,得到与移动边界模型接近的计算效率,在输入参数剧烈变化时,依旧显示出了良好的模型强壮性.文中研究内容可为水下热动力系统设计、控制研究和实时系统仿真提供依据.%The metal fuel with higher energy density has become an important role in development of underwater ther-mal power systems. In this paper, the one-dimensional distributed parameter method is employed to establish a dynamic model of the spiral tube evaporator in a Li/SF6 heat pipe reactor. Simulations are performed by changing different input parameters, and the results are compared with that of the moving boundary method. It is indicated that the one-dimen- sional distributed parameter model can better represent the real system, and is able to reflect the dynamic response of the system more accurately. The computational efficiency approaches that of the moving boundary model if suitable formula derivation and proper algorithm are adopted. This model is robust with respect to sudden change of the input load. This research may provide the basis for design, control and real-time simulation of underwater thermal power systems.
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