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Effect of Car Rear Shape on Pollution Dispersion in Near Wake Region

Author

Listed:
  • Xing-Jun Hu
  • Han-Bo Yang
  • Bo Yang
  • Xiu-Cheng Li
  • Yu-Long Lei

Abstract

Dispersion of vehicle exhaust gas is a primary source of air pollution in urban areas. Thus, it has become an important subject in the automotive field. This paper consists of two parts. First, the fastback MIRA model was selected as study object and a standard two-equation turbulence model was used. The simulation results were compared and analyzed with experimental data. The feasibility of the turbulence model and grid strategy was then verified, and the results were used in the next research step. Second, we used propane as tracer gas while ignoring the effect of the vehicle wake field force on this gas. The tracer gas diffusion in the wake flow field was then simulated through fastback, notchback, and square-back MIRA models. This study focuses on analyzing the characteristics of wake field diffusion effects, particularly in the near wake of a vehicle.

Suggested Citation

  • Xing-Jun Hu & Han-Bo Yang & Bo Yang & Xiu-Cheng Li & Yu-Long Lei, 2015. "Effect of Car Rear Shape on Pollution Dispersion in Near Wake Region," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-10, August.
    • Handle: RePEc:hin:jnlmpe:879735
    DOI: 10.1155/2015/879735
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