Particle Concentration Distribution under Idling Conditions in a Residential Underground Garage

Particles exhausted from cars have adverse impacts on
human health. The study developed a three-dimensional particle
dispersion numerical model including particle coagulation to simulate
the particle concentration distribution under idling conditions in a
residential underground garage. The simulation results demonstrate
that particle disperses much faster in the vertical direction than that in
horizontal direction. The enhancement of particle dispersion in the
vertical direction due to the increase of cars with engine running is
much stronger than that in the car exhaust direction. Particle dispersion
from each pair of adjacent cars has little influence on each other in the
study. Average particle concentration after 120 seconds exhaust is
1.8-4.5 times higher than the initial total particles at ambient
environment. Particle pollution in the residential underground garage
is severe.

• Yu Zhao
• Shinsuke Kato
• Jianing Zhao

• Dispersion
• Idling conditions
• Particle concentration
• Residential underground garage.

[1] Klot S. Von et al., “Increased asthma medication use in association with
ambient fine and ultrafine particles,” European Respiratory Journal, vol.
20, no. 3, pp. 691–702, Sep. 2002.
[2] Nicolai T. et al., “Urban traffic and pollutant exposure related to
respiratory outcomes and atopy in a large sample of children,” European
Respiratory Journal, vol. 21, no. 6, pp. 956–963, Jan. 2003.
[3] Annette Peters et al., “Exposure to Traffic and the Onset of Myocardial
Infarction,” The new England Journal of Medicine, vol. 351, no. 17, pp.
1721–1730, Oct. 2004.
[4] Pengzhi Jiang et al., “Simulation of the Evolution of Particle Size
Distributions in a Vehicle Exhaust Plume with Unconfined Dilution by
Ambient Air,” Journal of the Air & Waste Management Association, vol.
55, no. 4, pp. 437–445, Apr. 2005.
[5] Y. H. Liu, Z. He, and T. L. Chan, “Three-Dimensional Simulation of
Exhaust Particle Dispersion and Concentration Fields in the Near-Wake
Area of the Studied Ground Vehicle,” Aerosol Science and Technology,
vol. 45, no. 8, pp. 1019–1030, Aug. 2011.
[6] D. B. Kittelson, W. F. Watts, and J. P. Johnson, “On-road and Laboratory
evaluation of combustion aerosols—Part 1: Summary of diesel engine
results,” Journal of Aerosol Science, vol. 37, no. 8, pp. 913–936, Aug.
2006.
[7] Gao Ji-dong et al., “Size Distributions of Exhaust Particulates from a
Passenger Car with Gasoline Engine(Translation Journals style),” Journal
of Combustion Science and Technology, vol. 13, no. 3, pp. 248-252, Jun.
2007.
[8] R. E. Britter, and S. R. Hanna, “Flow and dispersion in urban areas,”
Annu. Rev. Fluid Mech, vol. 35, pp. 469-496, Jan. 2003.
[9] Wolf-Heinrich Hucho, and Gino Sovran, “Aerodynamics of road
vehicles,” Annu. Rev. Fluid Mech, vol. 25, pp. 485-537, Jan. 2003.
[10] C. J. Baker, “Flow and dispersion in ground vehicle wakes,” Journal of
Fluids and Structures, vol. 15, no. 7, pp. 1031-1060, Oct. 2007.
[11] Matteo Carpentieri, Prashant Kumar, and Alan Robins, “An overview of
experimental results and dispersion modelling of nanoparticles in the
wake of moving vehicles,” Environmental Pollution, vol. 159, no. 3, pp.
685-693, Mar. 2011.
[12] Prashant Kumar, Matthias Ketzel, Sotiris Vardoulakis, Lissa Pirjola, and
Rex Britter, “Dynamics and dispersion modelling of nanoparticles from
road traffic in the urban atmospheric environment-A review,” Journal of
Aerosol Science, vol. 42, no. 9, pp. 580-603, Sep. 2011.
[13] Dong-Hee Kim, Mridul Gautam, and Dinesh Gera, “Modeling Nucleation
and Coagulation Modes in the Formation of Particulate Matter inside a
Turbulent Exhaust Plume of a Diesel Engine,” Journal of Colloid and
Interface Science, vol. 249, no. 1, pp. 96-103, May. 2012.
[14] Z.Q. Yin, J.Z. Lin, K. Zhou, and T.L. Chan, “Numerical Simulation of the
Formation of Pollutant Nanoparticles in the Exhaust Twin-jet Plume of A
Moving Car,” International Journal of Nonlinear Sciences and
Numerical Simulation, vol. 8, no. 4, pp. 535–544, Dec. 2007.
[15] Z. Ning, C. S. Cheung, Y. Liu, M. A. Liu, and W. T. Hung, “Experimental
and numerical study of the dispersion of motor vehicle pollutants under
idle condition,” Atmospheric Environment vol. 39, no. 40, pp.
7880-7893, Dec. 2005.
[16] Z. Zhang, and Q. Chen, “Comparison of the Eulerian and Lagrangian
methods for predicting particle transport in enclosed spaces,”
Atmospheric Environment, vol. 41, no. 25, pp. 5236–5248, Aug. 2007.
[17] Tsan-Hsing Shih et al., “A new k-ε eddy viscosity model for high
Reynolds number turbulent flows,” Computers & Fluids, vol. 24, no. 3,
pp. 227-238, Mar. 1995.
[18] Scott E. Miller, and Sean C. Garrick, “Nanoparticle Coagulation in a
Planar Jet. Aerosol Science and Technology, vol. 38, no. 1, pp. 79–89, Jan.
2004.
[19] S.C. Garrick, K.E.J. Lehtinen, and Zachariah, “Nanoparticle coagulation
via a Navier–Stokes/nodal methodology: Evolution of the particle field,”
Journal of Aerosol Science, vol. 37, no. 5, pp. 555–576, May. 2006.
[20] D. Mukherjee, A. Prakash, and M.R. Zachariah, “Implementation of a
discrete nodal model to probe the effect of size-dependent surface tension
on nanoparticle formation and growth,” Journal of Aerosol Science, vol.
37, no. 10, pp. 1388-1399, Oct. 2006.
[21] Long Fan, Nong Xu, Xiyong Ke, and Hanchang Shi, “Numerical
simulation of secondary sedimentation tank for urban wastewater,”
Journal of the Chinese Institute of Chemical Engineers, vol. 38, no. 5-6,
pp. 425–433, Sep-Nov. 2007.
[22] D. S. Kim, S. H. Park, Y. M. Song, D. H. Kim, and K. W. Lee, “Brownian
coagulation of polydisperse aerosols in the transition regime,” Journal of
Aerosol Science, vol. 34, no. 7, pp. 859-868, Jul. 2003.
[23] Yu Zhao, Shinsuke Kato, and Jianing Zhao, “Effect of coagulation on
particle dispersion in an underground parking lot,” Building and
Environment, submitted for publication.