A Laboratory Study of Momentum and Passive Scalar Transport and Diffusion Within and Above a Model Urban Canopy - Final Report

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Authors
  1. Hilderman, T.
  2. Chong, R.
Corporate Authors
Coanda Research and Development Corp, Burnaby BC (CAN);Defence R&D Canada - Suffield, Ralston ALTA (CAN)
Abstract
The objective of the UDM project was to collect extensive data sets of dispersion through groups of obstacles to assist in the development and validation of models of urban dispersion. Both turbulent velocity measurements and scalar concentration data were collected in three different urban obstacle arrays constructed in Coanda’s re-circulating water channel: 1. Raupach’s 2D tab array; 2. Mock Urban Setting Test (MUST) shipping container; and 3. Urban arrays based on cubical obstacles place in a 2 X 2 unit cell. In all case, the water channel was configured to simulate rough-surface turbulent atmospheric boundary layer under neutrally stable conditions. Scalar releases were all performed with low momentum sources and neutrally buoyant fluorescent tracer solutions. This report discusses the details of the experiments and provides a brief overview of the data collected. The Appendices give the technical details on the velocity and concentration statistics that were calculated as well as the arrangement of information in the data files.
Report Number
DRDC-SUFFIELD-CR-2008-025 — Contractor Report
Date of publication
01 Dec 2007
Number of Pages
78
DSTKIM No
CA030690
CANDIS No
529311
Format(s):
CD ROM

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