翻译：为了探索高速列车在高寒地区运行时出现转向架结冰的现象采用了欧拉多相流法模拟了转向架表面的结冰分布情况研究了结冰参数对转向架区域结冰量和结冰外形的影响。结果表明转向架表面对雪粒和液滴的捕获能力和冷凝效果与雪粒和液滴含量呈正相关关系。结冰现象主要发生在转向架的迎风区域和位置较低的区域且随着列车速度的提高该现象越为明显原因是粒子与气流的相对速度增加导致粒子难以改变其运动轨迹进入转向架内部。通过多步

In order to explore the phenomenon of bogie icing when high-speed trains operate in cold regions, the Eulerian multi-phase flow method was used to simulate the distribution of icing on the bogie surface, and the effect of icing parameters on the amount and shape of icing in the bogie area was studied. The results show that the bogie surface's capacity to capture snowflakes and droplets and its condensation effect are positively correlated with the content of snowflakes and droplets. The icing phenomenon mainly occurs in the windward area of the bogie and the lower position, and with the increase of train speed, the phenomenon becomes more obvious because the relative velocity between particles and airflow increases, making it difficult for particles to change their trajectory and enter the inside of the bogie. Through the comparative study of the multi-step method and the single-step method, it was found that the single-step method ignored the changes in the flow field, affecting the collection of droplets and snowflakes, resulting in lower icing amounts and significantly different ice shapes. Therefore, updating the calculation grid in a timely manner can obtain more accurate results. After one hour of train operation, the braking and suspension devices were basically covered with ice, seriously threatening driving safety. In addition, the ice on the bogie surface hinders the movement of airflow, leading to an increase in local pressure difference at the bottom of the bogie and an increase in train resistance