High-Speed Train Simulation using Hydrodynamics

by Robert A. Helfinstine, Asst. Prof.; Dept. of Mech. Engrg., Univ. of Texas, Austin, TX,
Charles Dalton, Assoc. Prof.; Dept. of Mech. Engrg., Univ. of Houston, Houston, TX,

Serial Information: Journal of the Engineering Mechanics Division, 1972, Vol. 98, Issue 2, Pg. 357-366

Document Type: Journal Paper


The motion of two high-speed trains passing one another while moving in opposite directions is simulated using inviscid hydrodynamics. The method of images is used to generate the cylinders which represent the trains. The forces acting on the cylinders are determined by an integration of the unsteady Bernoulli equation. Excellent agreement with previous calculations for the pressure coefficient and intertia coefficient is obtained for two one-car trains. Two five-car trains are represented using this method and the results agree qualitatively with some experimental data obtained from a high-speed Japanese train. The lift and inertia coefficients for several of the cars are plotted to demonstrate the inviscid interaction of one train with the other.

Subject Headings: High-speed rail | Hydrodynamics | Railroad trains | Cylinders | Motion (dynamics) | Imaging techniques | Agreements and treaties | Inertia

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