Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Experimental and CFD Simulations of Polluted Air Behavior in Rectangular Tunnels

  • Lee, Yong-Ho (College of Engineering Science, Chonnam National University, Yeosu Campus)
  • Received : 2011.05.02
  • Accepted : 2011.07.18
  • Published : 2011.07.31
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Abstract

The objective of this study is to investigate the flow characteristics of polluted air behavior in rectangular tunnels using a PIV system and a commercial CFD program. The PIV experiments are simulated by using the olive oil as the tracer particles in scaled rectangular tunnels. Each model has one of four different outlet vents, each dimensionless L/H ratio of which is 0, 0.375, 0.75 and 1.125, respectively as the locations of each outlet are away from the vertical centerline through the inlet. A commercial CFD program, ANSYS CFX, was used to examine the velocity fields and the pressure distributions in numerical simulations. The kinematic viscosity of the air flow of $1.51{\times}10^{-5}m^2/s$ and the flow velocity of 0.3 m/s at the inlet are given under the same conditions in order to analyze the polluted air flow characteristics experimentally and computationally. This study is considered to examine the effect of the outlet locations in the naturally ventilated tunnel models.

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References

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  2. Flow Characteristics of Polluted Air in a Rectangular Tunnel using PIV and CFD vol.36, pp.5, 2012, https://doi.org/10.5916/jkosme.2012.36.5.609
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