Shaping buildings to promote street ventilation: A large-eddy simulation study
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

For very narrow results

When looking for a specific result

Best used for discovery & interchangable words

Recommended to be used in conjunction with other fields

Dates

to

Document Data
Library
People
Clear All
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Shaping buildings to promote street ventilation: A large-eddy simulation study

Filetype[PDF-2.71 MB]



Details:

  • Journal Title:
    Urban Climate
  • Personal Author:
  • NOAA Program & Office:
  • Description:
    Proper ventilation of urban streets is important for safeguarding the health and comfort of urban inhabitants. To compare the influence of different street canyon building geometries on urban ventilation, large-eddy simulations (LES) have been performed under neutral stability conditions. Five different street canyon building geometries have been tested: the i) flat roof, ii) pitched roof, iii) round roof, iv) terraced building and v) building with balconies. The geometries were configured as seven building arrays, with six street canyons in between them aligned in the span-wise direction. The Air Exchange Rate (ACH) between the street canyons and the free atmosphere has been computed for the different cases. The results show that the ACH is very sensitive to the building geometry; therefore, it appears reasonable to suggest that buildings can be shaped to promote urban ventilation. The paper also proposes an alternative ACH estimation method based on the folded-normal distribution that is shown to produce very good estimates of the LES-computed ACH. The new method uses vertical mean velocity and turbulence statistics that can be obtained from less intensive Computational Fluid Dynamic (CFD) models. A simplified two-reservoir Pollutant Concentration (PC) estimation methodology based on the ACH results is also proposed.
  • Keywords:
  • Source:
    Urban Climate, 26, 76-94
  • DOI:
  • ISSN:
    2212-0955
  • Format:
  • Publisher:
  • Document Type:
  • Rights Information:
    Accepted Manuscript
  • Compliance:
    Library
  • Main Document Checksum:
  • Download URL:
  • File Type:

Supporting Files

  • No Additional Files
More +

You May Also Like

Checkout today's featured content at repository.library.noaa.gov

Version 3.26.1