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Validation of Simplified Urban-Canopy Aerodynamic Parametrizations Using a Numerical Simulation of an Actual Downtown Area

Validation of Simplified Urban-Canopy Aerodynamic Parametrizations Using a Numerical Simulation... A steady-state Reynolds-averaged Navier–Stoke computational fluid dynamics (CFD) investigation of boundary-layer flow over a major portion of downtown Abu Dhabi is conducted. The results are used to derive the shear stress and characterize the logarithmic region for eight sub-domains, where the sub-domains overlap and are overlaid in the streamwise direction. They are characterized by a high frontal area index initially, which decreases significantly beyond the fifth sub-domain. The plan area index is relatively stable throughout the domain. For each sub-domain, the estimated local roughness length and displacement height derived from CFD results are compared to prevalent empirical formulations. We further validate and tune a mixing-length model proposed by Coceal and Belcher (Q J R Meteorol Soc 130:1349–1372, 2004). Finally, the in-canopy wind-speed attenuation is analysed as a function of fetch. It is shown that, while there is some room for improvement in Macdonald’s empirical formulations (Boundary-Layer Meteorol 97:25–45, 2000), Coceal and Belcher’s mixing model in combination with the resolution method of Di Sabatino et al. (Boundary-Layer Meteorol 127:131–151, 2008) can provide a robust estimation of the average wind speed in the logarithmic region. Within the roughness sublayer, a properly parametrized Cionco exponential model is shown to be quite accurate. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Boundary-Layer Meteorology Springer Journals

Validation of Simplified Urban-Canopy Aerodynamic Parametrizations Using a Numerical Simulation of an Actual Downtown Area

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer Science+Business Media B.V., part of Springer Nature
Subject
Earth Sciences; Atmospheric Sciences; Meteorology; Atmospheric Protection/Air Quality Control/Air Pollution
ISSN
0006-8314
eISSN
1573-1472
DOI
10.1007/s10546-018-0345-7
Publisher site
See Article on Publisher Site

Abstract

A steady-state Reynolds-averaged Navier–Stoke computational fluid dynamics (CFD) investigation of boundary-layer flow over a major portion of downtown Abu Dhabi is conducted. The results are used to derive the shear stress and characterize the logarithmic region for eight sub-domains, where the sub-domains overlap and are overlaid in the streamwise direction. They are characterized by a high frontal area index initially, which decreases significantly beyond the fifth sub-domain. The plan area index is relatively stable throughout the domain. For each sub-domain, the estimated local roughness length and displacement height derived from CFD results are compared to prevalent empirical formulations. We further validate and tune a mixing-length model proposed by Coceal and Belcher (Q J R Meteorol Soc 130:1349–1372, 2004). Finally, the in-canopy wind-speed attenuation is analysed as a function of fetch. It is shown that, while there is some room for improvement in Macdonald’s empirical formulations (Boundary-Layer Meteorol 97:25–45, 2000), Coceal and Belcher’s mixing model in combination with the resolution method of Di Sabatino et al. (Boundary-Layer Meteorol 127:131–151, 2008) can provide a robust estimation of the average wind speed in the logarithmic region. Within the roughness sublayer, a properly parametrized Cionco exponential model is shown to be quite accurate.

Journal

Boundary-Layer Meteorology – Springer Journals

Published: Feb 27, 2018

References

  • A numerical study of atmospheric pollutant dispersion in different two-dimensional street canyon configurations
    Assimakopoulos, VD; ApSimon, HM; Moussiopoulos, N
  • A numerical study of flow and pollutant dispersion characteristics in urban street canyons
    Baik, JJ; Kim, JJ
  • Progress in observing and modelling the urban boundary layer
    Barlow, JF
  • Boundary layer dynamics over London, UK, as observed using Doppler lidar during REPARTEE-II
    Barlow, JF; Dunbar, TM; Nemitz, EG; Wood, CR; Gallagher, MW; Davies, F; O’Connor, E; Harrison, RM
  • Scalar fluxes from urban street canyons. Part I: laboratory simulation
    Barlow, JF; Harman, IN; Belcher, SE
  • Thematic area 5: best practice advice for environmental flows
    Bartzis, JG; Vlachogiannis, D; Sfetsos, A
  • Computational fluid dynamics for urban physics: importance, scales, possibilities, limitations and ten tips and tricks towards accurate and reliable simulations
    Blocken, B
  • Urban roughness modelling in relation to pollutant dispersion
    Bottema, M
  • Urban roughness mapping-validation techniques and some first results
    Bottema, M; Mestayer, PG
  • Large-eddy simulation of neutral atmospheric boundary layer flow over heterogeneous surfaces: blending height and effective surface roughness
    Bou-Zeid, E
  • Strategic guidelines for street canyon geometry to achieve sustainable street air quality—Part II: multiple canopies and canyons
    Chan, AT; Au, WTW; So, ESP
  • Near-wall flow development after a step change in surface roughness
    Cheng, H; Castro, IP
  • Near-wall flow over urban-like roughness
    Cheng, H; Castro, IP
  • A comparison of large eddy simulations with a standard $$k-\varepsilon $$ k - ε Reynolds-averaged Navier–Stokes model for the prediction of a fully developed turbulent flow over a matrix of cubes
    Cheng, Y; Lien, FS; Yee, E; Sinclair, R
  • A mathematical model for air-flow in a vegetative canopy
    Cionco, RM
  • A wind-profile index for canopy flow
    Cionco, RM
  • A canopy model of mean winds through urban areas
    Coceal, O; Belcher, SE
  • Unsteady dynamics and organized structures from DNS over an idealized building canopy
    Coceal, O; Dobre, A; Thomas, TG
  • Mean flow and turbulence statistics over groups of urban-like cubical obstacles
    Coceal, O; Thomas, TG; Castro, IP; Belcher, SE
  • Wind-tunnel determination of the roughness length as a function of the fetch and the roughness density of three-dimensional roughness elements
    Counehan, J
  • Numerical considerations for simulations of flow and dispersion around buildings
    Cowan, IR; Castro, IP; Robins, AG
  • Environmental fluid mechanics
    Cushman-Roisin, B
  • A simple model for spatially-averaged wind profiles within and above an urban canopy
    Sabatino, S; Solazzo, E; Paradisi, P; Britter, R
  • Flow field measurements in the proximity of an urban intersection in London, UK
    Dobre, A; Arnold, S; Smalley, R; Boddy, J; Barlow, J; Tomlin, A; Belcher, S
  • Observations of wind speed profiles over Greater London, UK, using a Doppler lidar
    Drew, DR; Barlow, JF; Lane, SE
  • Surface-based remote sensing of the atmospheric boundary layer
    Emeis, S
  • Wind and turbulence in the urban boundary layer-analysis from acoustic remote sensing data and fit to analytical relations
    Emeis, S; Baumann-Stanzer, K; Piringer, M; Kallistratova, M; Kouznetsov, R; Yuhkov, V
  • Atmospheric boundary-layer structure from simultaneous SODAR, RASS, and ceilometer measurements
    Emeis, S; Münkel, C; Vogt, S; Müller, WJ; Schäfer, K
  • Urban microclimate: designing the spaces between buildings
    Erell, E; Pearlmutter, D; Williamson, TJTJ
  • Aerodynamic roughness length: correlation with roughness elements
    Fang, C; Sill, BL
  • Vertical structure of turbulence above an urban canopy
    Feigenwinter, C; Vogt, R; Parlow, E
  • Fluid dynamics of urban atmospheres in complex terrain
    Fernando, HJS
  • Turbulence in plant canopies
    Finnigan, J
  • Review of hydraulic roughness scales in the fully rough regime
    Flack, KA; Schultz, MP
  • The COST 732 Best Practice Guideline for CFD simulation of flows in the urban environment: a summary
    Franke, J; Hellsten, A; Schlunzen, KH; Carissimo, B
  • The atmospheric boundary layer
    Garratt, JR
  • Analysis of pollutant dispersion in an urban street canyon
    Gerdes, F; Olivari, D
  • Spatial characteristics of roughness sublayer mean flow and turbulence over a realistic urban surface
    Giometto, M; Christen, A; Meneveau, C; Fang, J; Krafczyk, M; Parlange, M
  • Effects of trees on mean wind, turbulence and momentum exchange within and above a real urban environment
    Giometto, MG; Christen, A; Egli, PE; Schmid, MF; Tooke, RT; Coops, NC; Parlange, MB
  • On the parameterisation of the effective roughness length for momentum transfer over heterogeneous terrain
    Goode, K; Belcher, SE
  • Aerodynamic roughness of urban areas derived from wind observations
    Grimmond, CSB; King, TS; Roth, M; Oke, TR
  • Aerodynamic properties of urban areas derived from analysis of surface form
    Grimmond, CSB; Oke, TR
  • Flux and turbulence measurements at a densely built-up site in Marseille: Heat, mass (water and carbon dioxide), and momentum
    Grimmond, CSB; Salmond, JA; Oke, TR; Offerle, B; Lemonsu, A
  • Aerodynamic parameters of regular arrays of rectangular blocks with various geometries
    Hagishima, A; Tanimoto, J; Nagayama, K; Meno, S
  • Comparisons of model simulations with observations of mean flow and turbulence within simple obstacle arrays
    Hanna, SR; Tehranian, S; Carissimo, B; Macdonald, RW; Lohner, R
  • A new aerodynamic parametrization for real urban surfaces
    Kanda, M; Inagaki, A; Miyamoto, T; Gryschka, M; Raasch, S
  • Large-eddy simulation of turbulent organized structures within and above explicity resolved cube arrays
    Kanda, M; Moriwaki, R; Kasamatsu, F
  • Wind-tunnel study of concentration fields in street canyons
    Kastner-Klein, P; Plate, EJ
  • Mean flow and turbulence characteristics in an urban roughness sublayer
    Kastner-Klein, P; Rotach, MW
  • Evaluation of urban local-scale aerodynamic parameters: implications for the vertical profile of wind speed and for source areas
    Kent, CW; Grimmond, S; Barlow, J; Gatey, D; Kotthaus, S; Lindberg, F; Halios, CH
  • An assessment of a three-beam Doppler lidar wind profiling method for use in urban areas
    Lane, SE; Barlow, JF; Wood, CR
  • Note on aerodynamic roughness-parameter estimation on the basis of roughness-element description
    Lettau, H
  • High resolution urban large-eddy simulation studies from street canyon to neighbourhood scale
    Letzel, MO; Krane, M; Raasch, S
  • Boundary layer wind structure from observations on a 325 m tower
    Li, QS; Zhi, L; Hu, F
  • Numerical modelling of the turbulent flow developing within and over a 3-D building array, part I: a high-resolution Reynolds-averaged Navier–Stokes approach
    Lien, FS; Yee, E
  • Numerical modelling of the turbulent flow developing within and over a 3-D building array, part III: a distributed drag force approach, its implementation and application
    Lien, FS; Yee, E
  • Modelling the mean velocity profile in the urban canopy layer
    Macdonald, RW
  • An improved method for the estimation of surface roughness of obstacle arrays
    Macdonald, RW; Griffiths, RF; Hall, DJ
  • CFD simulation of airflow over a regular array of cubes. Part II: analysis of spatial average properties
    Martilli, A; Santiago, JL
  • A physically based scheme for the urban energy budget in atmospheric models
    Masson, V
  • Vortex structure and heat transfer in turbulent flow over a wall-mounted matrix of cubes
    Meinders, ER; Hanjalić, K
  • Study of line source characteristics for 2-D physical modelling of pollutant dispersion in street canyons
    Meroney, RN; Pavageau, M; Rafailidis, S; Schatzmann, M
  • Large-eddy simulation of pollutant removal from a three-dimensional street canyon
    Michioka, T; Takimoto, H; Sato, A
  • Estimating aerodynamic parameters of urban-like surfaces with heterogeneous building heights
    Millward-Hopkins, JT; Tomlin, AS; Ma, L; Ingham, D; Pourkashanian, M
  • Aerodynamic parameters of a UK city derived from morphological data
    Millward-Hopkins, JT; Tomlin, AS; Ma, L; Ingham, DB; Pourkashanian, M
  • Boundary layer climates
    Oke, TR
  • Wind-speed profile and roughness sublayer depth modelling in urban boundary layers
    Pelliccioni, A; Monti, P; Leuzzi, G
  • A note on the contribution of dispersive fluxes to momentum transfer within canopies
    Poggi, D; Katul, GG; Albertson, JD
  • CFD simulation of outdoor ventilation of generic urban configurations with different urban densities and equal and unequal street widths
    Ramponi, R; Blocken, B; Coo, LB; Janssen, WD
  • Drag and drag partition on rough surfaces
    Raupach, MR
  • Simplified expressions for vegetation roughness length and zero-plane displacement as functions of canopy height and area index
    Raupach, MR
  • Averaging procedures for flow within vegetation canopies
    Raupach, MR; Shaw, RH
  • A wind-tunnel study of turbulent flow close to regularly arrayed rough surfaces
    Raupach, MR; Thom, AS; Edwards, I
  • Appropriate boundary conditions for computational wind engineering models using the $$k-\varepsilon $$ k - ε turbulence model
    Richards, PJ; Hoxey, RP
  • Profiles of turbulence statistics in and above an urban street canyon
    Rotach, M
  • Aerodynamic properties of rough surfaces with high aspect-ratio roughness elements: effect of aspect ratio and arrangements
    Sadique, J; Yang, XIA; Meneveau, C; Mittal, R
  • Energy and climate in the urban built environment
    Santamouris, MM; Asimakopoulos, DNDN
  • CFD simulation of airflow over a regular array of cubes. Part I: three-dimensional simulation of the flow and validation with wind-tunnel measurements
    Santiago, JL; Martilli, A; Martín, F
  • Pollutant dispersion and thermal effects in urban street canyons
    Sini, JF; Anquetin, S; Mestayer, PG
  • LES of flow over multiple cubes
    Stoesser, T; Mathey, F; Frohlich, J; Rodi, W
  • Single level turbulence measurements to determine roughness parameters of complex terrain
    Toda, M; Sugita, M
  • AIJ guidelines for practical applications of CFD to pedestrian wind environment around buildings
    Tominaga, Y; Mochida, A; Yoshie, R; Kataoka, H; Nozu, T; Yoshikawa, M; Shirasawa, T
  • Updating the Davenport roughness classification
    Wieringa, J
  • Turbulent flow at 190 m height above London During 2006–2008: a climatology and the applicability of similarity theory
    Wood, CR; Lacser, A; Barlow, JF; Padhra, A; Belcher, SE; Nemitz, E; Helfter, C; Famulari, D; Grimmond, CSB
  • Modelling street-scale flow and dispersion in realistic winds—towards coupling with mesoscale meteorological models
    Xie, ZT
  • LES and RANS for turbulent flow over arrays of wall-mounted obstacles
    Xie, ZT; Castro, IP
  • Large-eddy simulation of flows over random urban-like obstacles
    Xie, ZT; Coceal, O; Castro, IP
  • Exponential roughness layer and analytical model for turbulent boundary layer flow over rectangular-prism roughness elements
    Yang, XIA; Sadique, J; Mittal, R; Meneveau, C
  • Aerodynamic parameters of urban building arrays with random geometries
    Zaki, SA; Hagishima, A; Tanimoto, J; Ikegaya, N
  • Parametric study of urban-like topographic statistical moments relevant to a priori modelling of bulk aerodynamic parameters
    Zhu, X; Iungo, GV; Leonardi, S; Anderson, W