Imperial College London
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Professor Maarten van Reeuwijk

Faculty of Engineering, Department of Civil and Environmental Engineering

Professor of Urban Fluid Mechanics
 
 
 
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Contact

 

+44 (0)20 7594 6059m.vanreeuwijk Website CV

 
 
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Assistant

 

Miss Rebecca Naessens +44 (0)20 7594 5990

 
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Location

 

331Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lim:2022:10.1007/s00348-022-03439-0,
author = {Lim, HD and Hertwig, D and Grylls, T and Gough, H and van, Reeuwijk M and Grimmond, S and Vanderwel, C},
doi = {10.1007/s00348-022-03439-0},
journal = {Experiments in Fluids: experimental methods and their applications to fluid flow},
title = {Pollutant dispersion by tall buildings: laboratory experiments and Large-Eddy Simulation},
url = {http://dx.doi.org/10.1007/s00348-022-03439-0},
volume = {63},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Pollutant dispersion by a tall-building cluster within a low-rise neighbourhood of Beijing is investigated using both full-scale Large-Eddy Simulation and water flume experiments at 1:2400 model-to-full scale with Particle Image Velocimetry and Planar Laser-Induced Fluorescence. The Large-Eddy Simulation and flume results of this realistic test case agree remarkably well despite differences in the inflow conditions and scale. Tall buildings have strong influence on the local flow and the development of the rooftop shear layer which dominates vertical momentum and scalar fluxes. Additional measurements using tall-buildings-only models at both 1:2400 and 1:4800 scales indicates the rooftop shear layer is insensitive to the scale. The relatively thicker incoming boundary layer affects the Reynolds stresses, the relative size of the pollutant source affects the concentration statistics and the relative laser-sheet thickness affects the spatially averaged results of the measured flow field. Low-rise buildings around the tall building cluster cause minor but non-negligible offsets in the peak magnitude and vertical location, and have a similar influence on the velocity and concentration statistics as the scale choice. These observations are generally applicable to pollutant dispersion of realistic tall building clusters in cities. The consistency between simulations and water tunnel experiments indicates the suitability of both methodologies.
AU  - Lim,HD
AU  - Hertwig,D
AU  - Grylls,T
AU  - Gough,H
AU  - van,Reeuwijk M
AU  - Grimmond,S
AU  - Vanderwel,C
DO  - 10.1007/s00348-022-03439-0
PY  - 2022///
SN  - 0723-4864
TI  - Pollutant dispersion by tall buildings: laboratory experiments and Large-Eddy Simulation
T2  - Experiments in Fluids: experimental methods and their applications to fluid flow
UR  - http://dx.doi.org/10.1007/s00348-022-03439-0
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000800943400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://link.springer.com/article/10.1007/s00348-022-03439-0
UR  - http://hdl.handle.net/10044/1/98297
VL  - 63
ER  -
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