The article presents an aerodynamic analysis of three different types of locomotive models and their impact on trackside structures. The obtained results were compared with normative data. Attention was focused mainly on pressures generated by trains moving at a speed of 250 km/h and the parameters of the computational process. The analysis was performed using Dolfyn (Cyclone Fluid Dynamics BV) and Autodesk Algor Simulation Multiphysics software, in which the finite volume method is used to solve the Navier-Stokes equations.The use of trains reaching speeds of up to 250 km/h requires an analysis of their aerodynamic impact on trackside structures. Aerodynamic forces generated during a train’s passage depend mainly on four factors: speed (squared), train geometry, the shape of the structure, and its position (especially the distance between the structure and the train)[6].
The article presents an aerodynamic analysis of three types of locomotives differing in the shape of their front section. In all three cases, a wind tunnel with a moving floor wall was modeled. The analysis was conducted using Dolfyn (Cyclone Fluid Dynamics) [1] and Autodesk Algor
Simulation Multiphysics [2] software. To present the results, ParaView (Kitware et al.) [3] and VisIt (Lawrence Livermore National Security) [4] programs were used. The analysis parameters are presented in Table 1. air density k-epsilon turbulent model – turbulent kinetic energy
ε – dissipation rate turbulence intensity inlet air velocity floor wall velocity analysis time air temperature dynamic air viscosity (…)
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Source: Logistyka Magazine