Tracer modeling in an urban environment

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Description

The accurate simulation of the transport of a tracer released into an urban area requires sufficiently high model resolution to resolve buildings and urban street canyons. Within the authors' group a modeling effort has been underway to develop a model -- termed HIGRAD -- capable of simulating flow at the high spatial resolution required within the urban environment. HIGRAD uses state-of-the-art numerical techniques to accurately simulate the regions of strong shear found near edges of buildings. HIGRAD also employs a newly developed radiation package which in addition to standard shortwave and longwave heating/cooling effects can account for the shadowing effects ... continued below

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5 pages

Creation Information

Reisner, J.M.; Smith, W.S.; Bossert, J.E. & Winterkamp, J.L. December 31, 1998.

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Description

The accurate simulation of the transport of a tracer released into an urban area requires sufficiently high model resolution to resolve buildings and urban street canyons. Within the authors' group a modeling effort has been underway to develop a model -- termed HIGRAD -- capable of simulating flow at the high spatial resolution required within the urban environment. HIGRAD uses state-of-the-art numerical techniques to accurately simulate the regions of strong shear found near edges of buildings. HIGRAD also employs a newly developed radiation package which in addition to standard shortwave and longwave heating/cooling effects can account for the shadowing effects of building complexes on the urban flow field. Idealized simulations have been conducted which clearly illustrate the role radiation plays in transport and dispersion in an urban setting. The authors have also modeled the flow of an inert tracer in a realistic, complex urban environment. Complex flow/building interactions were produced during the simulation and these interactions had a significant impact on the transport of the tracer.

Physical Description

5 pages

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OSTI as DE00334249

Source

  • Other Information: Supercedes report DE99002399; PBD: [1998]

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  • Other: DE99002399
  • Report No.: LA-UR--98-3563
  • Report No.: CONF-981154--
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/334249 | External Link
  • Office of Scientific & Technical Information Report Number: 334249
  • Archival Resource Key: ark:/67531/metadc686253

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  • December 31, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • March 1, 2016, 2:05 p.m.

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Reisner, J.M.; Smith, W.S.; Bossert, J.E. & Winterkamp, J.L. Tracer modeling in an urban environment, report, December 31, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc686253/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.