以学术标准翻译：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

In order to investigate the phenomenon of wheelset icing in cold regions during high-speed train operation, the Eulerian multiphase flow method was used to simulate the distribution of ice on the wheelset surface, and the effect of icing parameters on the amount and shape of icing in the wheelset area was studied. The results showed that the wheelset surface's ability to capture snow particles and condensation effect were positively correlated with the content of snow particles and liquid droplets. The icing phenomenon mainly occurred in the windward area and the lower position of the wheelset, and became more pronounced with the increase of train speed due to the increase in relative velocity between particles and airflow, making it difficult for particles to change their trajectory and enter the interior of the wheelset. Through a comparison study of multi-step and single-step methods, it was found that the single-step method ignored the changes in the flow field, affecting the collection of liquid droplets and snow particles, resulting in a lower icing amount 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 brake and suspension devices were basically covered with ice, posing a serious threat to the safety of train travel. In addition, the ice on the wheelset surface hindered the movement of airflow, resulting in an increase in local pressure difference at the bottom of the wheelset and an increase in train resistance