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http://dx.doi.org/10.7782/JKSR.2012.15.6.531

Analysis of Aerodynamic Noise Generation from Pantograph Using Panhead Models of Simple-Geometry and Its Reduction  

Yi, Suk-Keun (Department of Mechanical Engineering, Hanyang University)
Yang, Won-Seok (Department of Mechanical Engineering, Hanyang University)
Koh, Hyo-In (Korea Railroad Research Institute)
Park, Junhong (Department of Mechanical Engineering, Hanyang University)
Publication Information
Journal of the Korean Society for Railway / v.15, no.6, 2012 , pp. 531-536 More about this Journal
Abstract
This study presents a result on aero-acoustic characteristics of pantograph panheads. To analyze the fluid flow around the panhead and resulting sound radiation, simple models of panhead were used in the numerical simulations called Lattice-Boltzmann method. The simulation results were verified using the wind tunnel test. The main aerodynamic noise was generated from the vortex shedding which is characterized by the Strouhal number, flow speed and geometry. The reduction in the radiated noise with simultaneously achieving increased lifting force was implemented for the simple rectangular geometry used in this study. Also, it was shown that the radiated sound power was significantly reduced by minimizing vortex shedding using through-holes or streamline shapes.
Keywords
Aerodynamic Noise; Pantograph; Panhead; Lattice-Boltzmann Method; Vortex Shedding;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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