Numerical Viscous Flow Analysis Around a High-Speed Train with Crosswind Effects

Recently, a high-speed train having the maximum Mach number of 0.25-0.3 has been developed in several countries to satisfy demands for new systems of fast and comfortable mass transportation. To predict unsteady aerodynamic loads, performances, and acoustic noise level at this high speed, the accurate simulation of the flowfield is needed. The objective of the present work is to apply the iterative time-marching scheme to the incompressible turbulent flow around a high-speed train with crosswing effects. Even though the crosswind may significantly affect the longitudinal and lateral stabilities of the train, the details of flow properties of the crosswind are not well understood.