Articles | Volume 13, issue 3
Geosci. Model Dev., 13, 937–953, 2020
https://doi.org/10.5194/gmd-13-937-2020
Geosci. Model Dev., 13, 937–953, 2020
https://doi.org/10.5194/gmd-13-937-2020

Model description paper 06 Mar 2020

Model description paper | 06 Mar 2020

A one-dimensional model of turbulent flow through “urban” canopies (MLUCM v2.0): updates based on large-eddy simulation

Negin Nazarian et al.

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Cited articles

Antoniou, N., Montazeri, H., Wigo, H., Neophytou, M. K.-A., Blocken, B., and Sandberg, M.: CFD and wind-tunnel analysis of outdoor ventilation in a real compact heterogeneous urban area: Evaluation using “air delay”, Build. Environ., 126, 355–372, 2017. a
Brown, M. J., Lawson, R. E., DeCroix, D. S., and Lee, R.: Comparison of centerline velocity measurements obtained around 2D and 3D building arrays in a wind tunnel, Int. Soc. Environ. Hydraulics, Tempe, AZ, 2001. a, b, c
Bueno, B., Norford, L., Hidalgo, J., and Pigeon, G.: The urban weather generator, J. Build. Perform. Sim., 6, 269–281, 2013. a
Coceal, O., Thomas, T. G., Castro, I. P., and Belcher, S. E.: Mean flow and turbulence statistics over groups of urban-like cubical obstacles, Bound.-Lay. Meteorol., 121, 491–519, 2006. a, b, c
Coceal, O., Dobre, A., and Thomas, T. G.: Unsteady dynamics and organized structures from DNS over an idealized building canopy, Int. J. Climatol., 27, 1943–1953, 2007. a
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Short summary
We present an update to the Multi-Layer Urban Canopy Model by revisiting the parameterization of length scales based on high-resolution and validated large-eddy simulations. Additionally, the inclusion of dispersive fluxes in the parameterization schemes are also discussed. The results demonstrate that updated parameterizations improve the accuracy of the vertical exchange of momentum in the street canyon.