抄録
Incompressible finite element flow analysis and acoustic calculation are combined to predict the far field aerodynamic noise radiated from a side door on a high-speed train running at 75m/s (270km/h). The acoustic calculation is based on the assumption that the unsteady flow field is not influenced by the sound field. Also it is assumed that the contribution of volumetric quadrupole source term is smaller than that of dipole source term. The results of flow analysis are compared with experimental measurements on an actual train in terms of pressure fluctuation, the phase velocity, and the coherence between the pressure probes.
