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

33 pages
Read Article

Loading next page...
 
/lp/springer_journal/validation-of-simplified-urban-canopy-aerodynamic-parametrizations-59meP0S0m7
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

You’re reading a free preview. Subscribe to read the entire article.

Try 2 weeks free now

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

or browse the journals available

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create folders to
organize your research

Export folders, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off

Sign up
for free
Start 14 day
Free Trial