Modelling the Effects of a Vegetation Barrier on Road Dust Dispersion

Abstract:

Article Preview

Atmospheric particulate matter (PM) is a well known risk to human health. Vehicular traffic is one of the major sources of particulates in an urban setting.We study a problem of road dust dispersion. Using CFD solver based on RANS equations, we investigate the effect of a vegetation barrier on the concentration of airborne PM induced by road traffic. Simplified 2D model of a porous obstacle adjacent to a road source of two classes of particles serves as an idealization of a real-world situation.Filtering efficiency of the barrier is investigated under varying atmospheric conditions. Our model indicate that the efficiency decreases for increasing wind speed. Effect of atmospheric stratification on~the~air quality behind the barrier is shown to be highly dependent on the wind speed.

Info:

Periodical:

Edited by:

Cyril Fischer

Pages:

105-112

Citation:

V. Šíp and L. Beneš, "Modelling the Effects of a Vegetation Barrier on Road Dust Dispersion", Applied Mechanics and Materials, Vol. 821, pp. 105-112, 2016

Online since:

January 2016

Export:

Price:

$38.00

* - Corresponding Author

[1] G.G. Katul, L. Mahrt, D. Poggi, and C. Sanz: One- and two-equation models for canopy turbulence. Bound. Layer Meteor. 113 (2004), 81-109.

DOI: https://doi.org/10.1023/b:boun.0000037333.48760.e5

[2] L. Fitzmaurice, R.H. Shaw, K.T. Paw U, and E.G. Patton: Three-dimensional scalar microfront systems in a large-eddy simulation of vegetation canopy flow. Bound. Layer Meteor. 112 (2004), 107-127.

DOI: https://doi.org/10.1023/b:boun.0000020159.98239.4a

[3] A.M. Endalew, M. Hertog, M.A. Delele, K. Baetens, T. Persoons, M. Baelmans: H. Ramon, B.M. Nicolaï, and P. Verboven. CFD modelling and wind tunnel validation of airflow through plant canopies using 3D canopy architecture. Int. J. Heat Fluid Flow 30 (2009).

DOI: https://doi.org/10.1016/j.ijheatfluidflow.2008.12.007

[4] A. Petroff, A. Mailliat, M. Amielh, and F. Anselmet: Aerosol dry deposition on vegetative canopies. Part I: Review of present knowledge. Atmos. Environ. 42 (2008), 3625-3653.

DOI: https://doi.org/10.1016/j.atmosenv.2007.09.043

[5] T. Litschke and W. Kuttler: On the reduction of urban particle concentration by vegetation a review. Meteorol. Z. 17 (2008), 229-240.

DOI: https://doi.org/10.1127/0941-2948/2008/0284

[6] S. Janhäll: Review on urban vegetation and particle air pollution - deposition and dispersion. Atmos. Environ. 105 (2015), 130-137.

[7] M.R. Raupach, N. Woods, G. Dorr, J.F. Leys, and H.A. Cleugh: The entrapment of particles by windbreaks. Atmos. Environ. 35 (2001), 3373-3383.

DOI: https://doi.org/10.1016/s1352-2310(01)00139-x

[8] A. Tiwary, H.P. Morvanb, and J.J. Colls: Modelling the size-dependent collection efficiency of hedgerows for ambient aerosols. Aerosol Science 37 (2005), 990-1015.

DOI: https://doi.org/10.1016/j.jaerosci.2005.07.004

[9] J.T. Steffens, Y.J. Wang, and K.M. Zhang: Exploration of effects of a vegetation barrier on particle size distributions in a near-road environment. Atmos. Environ. 50 (2012), 120-128.

DOI: https://doi.org/10.1016/j.atmosenv.2011.12.051

[10] L. Matejicek, Z. Janour, L. Benes, T. Bodnar and E. Gulikova: Spatio-temporal modelling of dust transport over surface mining areas and neighbouring residential zones. Sensors 8 (2008), 3830-3847.

DOI: https://doi.org/10.3390/s8063830

[11] L. Beneš, T. Bodnár and K. Kozel: Numerical simulation of the neutrally stratified ABL flow over complex geometry. In International Conference of Computational Methods in Sciences and Engineering, American Institute of Physics (2009).

DOI: https://doi.org/10.1063/1.4772104

[12] A.K. Blackadar: The vertical distribution of wind and turbulent exchange in a neutral atmosphere. J. Geophys. Res. 67(8) (1962), 3095-3102.

DOI: https://doi.org/10.1029/jz067i008p03095

[13] Y. Tominaga and T. Stathopoulos: Turbulent Schmidt numbers for CFD analysis with various types of flowfield. Atmos. Environ. 41 (2007), 8091-8099.

DOI: https://doi.org/10.1016/j.atmosenv.2007.06.054

[14] W.C. Hinds: Aerosol technology: Properties, Behavior, and Measurement of Airborne Particles. Wiley, New York, (1999).

[15] M. -S. Liou: A sequel to AUSM, part II: AUSM+-up for all speeds. J. Comput. Phys. 214 (2006), 137-170.

DOI: https://doi.org/10.1016/j.jcp.2005.09.020

[16] V. Venkatakrishnan: Convergence to steady state solutions of the euler equations on unstructured grids with limiters. J. Comput. Phys. 118 (1995), 120-130.

DOI: https://doi.org/10.1006/jcph.1995.1084

[17] Y.J. Wang and K.M. Zhang: Modeling near-road air quality using a computational fluid dynamics model, CFD-VIT-RIT. Environ. Sci. Technol. 43 (2009), 7778-7783.

DOI: https://doi.org/10.1021/es9014844

Fetching data from Crossref.
This may take some time to load.