NUMERICAL ANALYSIS OF AERODYNAMIC NOISE RADIATION FROM A HIGH-SPEED TRAIN SURFACE

✍ Scribed by T. SASSA; T. SATO; S. YATSUI

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 364 KB
• Volume: 247
• Category: Article
• ISSN: 0022-460X
• DOI: 10.1006/jsvi.2001.3773

✦ Synopsis

The aerodynamic noise radiation from a vestibule side door on a high-speed train surface is calculated by the combination of unsteady incompressible #uid #ow analysis and acoustic analysis. Pressure #uctuation on a vestibule side door surface is measured to verify the results of #uid #ow analysis. Analysis results agree with measured data very well at low frequencies. For high-frequency components, the solvable frequency is limited by the analysis mesh size. Required mesh size is typically one eighth of the wavelength of the pressure #uctuation on the model surface. The aerodynamic noise is mainly radiated from around the following corner where the vortices that are shed from the leading corner strongly interact with the train surface.

2001 Academic Press