本发明公开了一种液态金属螺旋管蒸汽发生器两侧冷却与蒸发耦合计算方法，包括以下步骤：建立螺旋管蒸汽发生器计算域原型几何模型；对螺旋管蒸汽发生器计算域模型内的各部分进行网格划分，得到各部分的网格模型，并进行边界条件设置；通过将螺旋管蒸汽发生器计算域内各部分的交界面设置为网格交界面实现各部分网格的拼接；将液态金属的物性依据湍流Pr数修正关系式导入；进行合理的初始化与边界条件修正；在螺旋管蒸汽发生器所有区域包括：固体区域以及壳侧与管侧流体域的网格模型范围内进行蒸汽蒸发、铅铋冷凝、管壁固体区域的耦合流动传热计算。

The invention discloses a calculation method for cooling and evaporating coupling of two sides of a liquid metal spiral tube steam generator, which comprises the following steps of: establishing a geometric model of a calculation domain prototype of the spiral tube steam generator; carrying out grid division on each part in the calculation domain model of the spiral tube steam generator to obtain a grid model of each part, and carrying out boundary condition setting; the method comprises the steps that the interfaces of all parts in a calculation domain of the spiral tube steam generator are set as grid interfaces to realize splicing of grids of all parts; introducing the physical property of the liquid metal according to a turbulent flow Pr number correction relational expression; carrying out reasonable initialization and boundary condition correction; all the areas of the spiral tube steam generator include: and performing steam evaporation, lead bismuth condensation and coupled flow heat transfer calculation of the solid region of the pipe wall in the range of the grid models of the solid region and the fluid regions on the shell side and the pipe side.