Based on three-dimensional numerical simulation method, the aerodynamic drag of a certain type of high speed train is simulated by using two sets of grid systems, fixed grid and slip grid. The variation of aerodynamic drag and the drag contribution value of bogie and pantograph are compared between two models of train static and movement, and the mechanism of drag formation under two models is analyzed. The total drag of train under the static state is increased by about 24.5% under the condition of train movement. In the two models, the influence of the component drag is related to the space position, and the farther the distance orbit is, the less the influence of the drag. Through the work of this paper, the influence of train static and motion on train drag and its contribution proportion are revealed, which provides a reference for the result checking of numerical simulation.
展开▼
