On the mechanism of air pollutant re-entrainment in two-dimensional idealized street canyons

Atmospheric Environment

Volumn 45, Issue 27, 2011, Pages 4763-4769

  Liu, Chun Ho ^a   Cheng, W C ^a   Leung, Thomas C Y ^a   Leung, Dennis Y C ^a  

^a UNIVERSITY OF HONG KONG   (Hong Kong)

Author keywords

Air exchange rate ACH; Local pollutant exchange rate ; Pollutant exchange rate PCH; Street canyons; Urban canopy layer; Volume average pollutant concentration

Indexed keywords

AIR; AIR ENTRAINMENT; AIR POLLUTION CONTROL; ASPECT RATIO; ATMOSPHERIC MOVEMENTS; COMPUTATIONAL FLUID DYNAMICS; COMPUTER INTEGRATED MANUFACTURING; FINANCE; NAVIER STOKES EQUATIONS; SHEAR FLOW; STATISTICAL MECHANICS; STORM SEWERS; TURBULENCE MODELS;

AIR EXCHANGE RATES; EXCHANGE RATES; POLLUTANT CONCENTRATION; STREET CANYON; URBAN CANOPY LAYERS;

AIR POLLUTION;

ATMOSPHERIC POLLUTION; COMPUTATIONAL FLUID DYNAMICS; CONCENTRATION (COMPOSITION); ENTRAINMENT; FLOW STRUCTURE; NAVIER-STOKES EQUATIONS; NUMERICAL MODEL; POLLUTANT REMOVAL; POLLUTANT TRANSPORT; REYNOLDS NUMBER; SENSITIVITY ANALYSIS; STREET CANYON; TURBULENCE; URBAN ATMOSPHERE; VENTILATION;

AIR POLLUTANT; AIR POLLUTION; ARTICLE; COMPUTATIONAL FLUID DYNAMICS; ENVIRONMENTAL PARAMETERS; MATHEMATICAL MODEL; PRIORITY JOURNAL; QUANTITATIVE ANALYSIS; RENORMALIZATION GROUP TURBULENCE; REYNOLDS AVERAGED NAVIERE STOKES EQUATION; SENSITIVITY ANALYSIS; TURBULENT FLOW; TWO DIMENSIONAL IDEALIZED STREET CANYON;

EID: 79960584957     PISSN: 13522310     EISSN: 18732844     Source Type: Journal    
DOI: 10.1016/j.atmosenv.2010.03.015     Document Type: Article

References (39)

1. Ahmad K., Khare M., Chaudhry K.K. Wind tunnel simulation studies on dispersion at urban street canyons and intersections - a review. J. Wind Eng. Ind. Aerodyn. 2005, 93:697-717.
2. Bady M., Kato S., Huang H. Towards the application of indoor ventilation efficiency indices to evaluate the air quality of urban areas. Build. Environ. 2008, 43:1991-2004.
3. Barlow J.F., Belcher S.E. A wind tunnel model for quantifying fluxes in the urban boundary layer. Boundary-Layer Meteorol. 2002, 104:131-150.
4. Barlow J.F., Harman I.N., Belcher S.E. Scalar fluxes from urban street canyons. Part I: laboratory simulation. Boundary-Layer Meteorol. 2004, 113:369-385.
5. Belcher S.E. Mixing and transport in urban areas. Phil. Trans. R. Soc. A 2005, 363:2947-2968.
6. Bentham T., Britter R. Spatially averaged flow within obstacle arrays. Atmos. Environ. 2003, 37:2037-2043.
7. Britter R., Hanna S. Flow and dispersion in urban areas. Annu. Rev. Fluid Mech. 2003, 35:469-496.
8. Cai X.M., Barlow J.F., Belcher S.E. Dispersion and transfer of passive scalars in and above street canyons - large-eddy simulations. Atmos. Environ. 2008, 42:5885-5895.
9. Caton F., Britter R.E., Dalziel S. Dispersion mechanisms in a street canyon. Atmos. Environ. 2003, 37:693-702.
10. Chang C.-H., Meroney R.N. Numerical and physical modeling of bluff body flow and dispersion in urban street canyons. J. Wind Eng. Ind. Aerodyn. 2001, 89:1325-1334.
11. Chang C.-H., Meroney R.N. Concentration and flow distributions in urban street canyons: wind tunnel and computational data. J. Wind Eng. Ind. Aerodyn. 2003, 91:1141-1154.
12. Cheng H., Hayden P., Robins A.G., Castro I.P. Flow over cube arrays of different packing densities. J. Wind Eng. Ind. Aerodyn. 2007, 95:715-740.
13. Cheng W.C., Liu C.-H., Leung D.Y.C. Computational formulation for the evaluation of street canyon ventilation and pollutant removal performance. Atmos. Environ. 2008, 42:9041-9051.
14. Cheng W.C., Liu C.-H., Leung D.Y.C. On the comparison of the ventilation performance of street canyons of different aspect ratios and Richardson number. Build. Simul. 2009, 2:53-61.
15. Cheng W.C., Liu C.-H., Leung D.Y.C. On the correlation of air and pollutant exchange for street canyons in combined wind-buoyancy-driven flow. Atmos. Environ. 2009, 43:3682-3690.
16. Coceal O., Thomas T.G., Belcher S.E. Spatial variability of flow statistics within regular building arrays urban-like cubical obstacles. Boundary-Layer Meteorol. 2007, 125:537-552.
17. Coceal O., Thomas T.G., Castro I.P., Belcher S.E. Mean flow and turbulence statistics over groups of urban-like cubical obstacles. Boundary-Layer Meteorol. 2006, 121:491-519.
18. Di Sabatino S., Buccolieri R., Pulvirenti B., Britter R. Simulations of pollutant dispersion within idealised urban-type geometries with CFD and integral models. Atmos. Environ. 2007, 41:8316-8329.
19. FLUENT FLUENT 2009, http://www.fluent.com.
20. Hamlyn D., Hilderman T., Britter R. A simple network approach to modelling dispersion among large groups of obstacles. Atmos. Environ. 2007, 41:5848-5862.
21. Harman I.N., Barlow J.F., Belcher S.E. Scalar fluxes from urban street canyons. Part II: model. Boundary-Layer Meteorol. 2004, 113:387-409.
22. Inagaki A., Kanda M. Turbulent flow similarity over an array of cubes in near-neutrally stratified atmospheric flow. J. Fluid Mech. 2008, 615:101-120.
23. Kanda M. Progress in the scale modeling of urban climate: review. Theor. Appl. Climatol. 2006, 84:23-33.
24. Lee I.Y., Park H.M. Parameterization of the pollutant transport and dispersion in urban street canyons. Atmos. Environ. 1994, 28:2343-2349.
25. Li X.-X., Liu C.-H., Leung D.Y.C. Determination of air exchange rate of street canyon with a k-ε turbulence model. Atmos. Environ. 2005, 39:7285-7296.
26. Li X.-X., Liu C.-H., Leung D.Y.C., Lam K.M. CFD studies for stree-canyon air pollution: recent progress. Atmos. Environ. 2006, 40:5640-5658.
27. Liu C.-H., Barth M.C. Large-eddy simulation of flow and scalar transport in a modeled street canyon. J. Applied Meteoro. 2002, 41:660-673.
28. Liu C.-H., Leung D.Y.C., Barth M.C. On the prediction of air and pollutant exchange rates in street canyons of different aspect ratio using large-eddy simulation. Atmos. Environ. 2005, 39:1567-1574.
29. Macdonald R.W., Griffiths R.F., Cheah S.C. Field experiments of dispersion through regular arrays of cubic structures. Atmos. Environ. 1996, 31:783-795.
30. Meroney R.A., Pavageau M., Rafailidis S., Schatzmann M. Study of line source characteristics for 2-D physical modelling of pollutant dispersion in street canyons. J. Wind Eng. Ind. Aerodyn. 1996, 90:321-339.
31. Narita K. Experimental study of the transfer velocity for urban surfaces with a water evaporation method. Boundary-Layer Meteorol. 2007, 122:293-320.
32. Narita K., Nonomura Y., Ogasa A. Wind tunnel test on convective mass transfer coefficient on urban surface, study on convective heat transfer coefficient on outside building wall in an urban area part 2. J. Arch. Plan. Environ. Eng. 2000, 527:69-76.
33. Oke T.R. Street design and urban canopy layer climate. Energy Bldg. 1988, 11:103-113.
34. Pavageau M., Schatzmann M. Wind tunnel measurements of concentration fluctuations in an urban street canyon. Atmos. Environ. 1999, 33:3961-3971.
35. Reynolds R.T., Castro I.P. Measurements in an urban-type boundary layer. Exp. Fluids 2008, 45:141-156.
36. Sini J.F., Anquetin S., Mestayer P.G. Pollutant dispersion and thermal effects in urban street canyons. Atmos. Environ. 1996, 30:2659-2677.
37. Vardoulakis S., Fisher B.-E., Pericleous K., Gonzalez-Flesca N. Modelling air quality in street canyons: a review. Atmos. Environ. 2003, 37:155-182.
38. Xie X., Liu C.-H., Leung D.Y.C., Leung M.K.H. Characteristics of air exchange in a street canyon with ground heating. Atmos. Environ. 2006, 40:6369-6409.
39. Yakhot V., Orszag S.A. Renormalization-group analysis of turbulence. Phys. Rev. Lett. 1986, 57:6396-6409.