含蜡天然气经过节流后，蜡晶会自发冷凝析出，在节流阀内堵塞后可能影响管道输送效率和气田集输生产活动。然而含蜡天然气中蜡析出到最终沉积过程较为复杂，包含蜡晶成核、生长、析出、沉积和剥离过程。因此，基于欧拉-拉格朗日框架，利用CFD（computational fluid dynamics）方法完整描述含蜡天然气在节流后蜡晶成核、生长、沉积以及剥离的整个过程，探究不同孔板式节流阀结构下蜡沉积规律。结果表明：单孔板节流阀、双孔板节流阀和楔形节流阀的最大沉积量均随着入口压力的增加而增加，但沉积率随着入口压力的增大而下降；在节流效应相同前提下，楔形节流阀内沉积率最小；受流动轨迹的影响，单孔板式节流阀的沉积位置主要位于喉道出口截面以及距喉道出口约0.1 m处，且呈环带状分布，而双孔板节流阀与楔形节流阀的沉积位置近似沿流体流动方向呈冲击波状抛物线分布；整体而言，蜡沉积带的宽度随着压力增加而减小。

The condensation and precipitation of wax crystals from wax-containing natural gas potentially impair pipeline efficiency, gas field gathering and production operations by causing clogging at the throttling valve. The complexity of wax precipitation leading to final deposition in wax-containing natural gas encompasses nucleation, growth, precipitation, deposition, and stripping of wax crystals. Utilizing a computational fluid dynamics(CFD) approach within the Eulerian-Lagrangian framework, the entire process of nucleation, growth, deposition, and stripping following the throttling of wax-containing natural gas was comprehensively examined. Also, the deposition within various orifice plate throttle configurations was investigated. The findings indicate that the maximum deposition in single-orifice plate, double-orifice plate, and wedge-shaped throttle systems increase with rising inlet pressure. However, the deposition rate decreases as the inlet pressure increases. Among these configurations, the wedge-shaped throttle exhibits the lowest deposition rate under equivalent throttling conditions. Furthermore, deposition patterns are influenced by the flow trajectory, with the single-orifice plate throttle primarily showing deposition in the throat's outlet region and approximately 0.1 m downstream, forming a ring-like annular distribution. In contrast, the double-orifice plate and wedge-shaped throttles display deposition patterns resembling shockwave-like parabolic distributions along the fluid flow direction. Overall, the deposition band width decreases with increasing pressure.