열차풍에 의한 눈입자의 비산과 부유에 관한 수치적 연구

Abstract

A High-speed train stirs up snow on its way and the suspended snow particles could be accumulated on the train. Snow accumulation on high-speed trains forms ice which is damaging trains and surrounding facilities. The approach advocated here involves combining the snowdrift model and brown-out model to explain the snow particle entrainment from the ground and coupled particulate-air system. In the suspension layer, this model assumes that the particles remain in a near-equilibrium state under the action of aerodynamic forces. It is replaced by an algebraic model that the entrainment process in the saltation layer. The model is used to analyze the geometrical structure and extent of the snow particles stirred up by high-speed train and show that the geometrical structure of the vortex plays a primary role in governing the extent of the snow particles cloud that is created by the train.