Spatially-averaged flow statistics within a canopy of large bluff bodies: results from direct numerical simulations
Coceal, Omduth, Thomas, T. Glyn and Belcher, Stephen E. (2008) Spatially-averaged flow statistics within a canopy of large bluff bodies: results from direct numerical simulations. Acta Geophysica, 56, (3), 862-875. (doi:10.2478/s11600-008-0025-y).
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Description/Abstract
The flow within a canopy of large bluff bodies is highly turbulent and spatially heterogeneous. Results from direct numerical simulations over groups of cubical obstacles are analysed using the double-averaging methodology. The obstacles occupy a significant fraction of the canopy space; this gives rise to substantial dispersive stresses within the canopy. The underlying bluff-body turbulent dynamics is different from typical canopy turbulence, and this is reflected in the double-averaged statistics. The spatially-averaged velocities, stresses and drag force depend significantly upon the layout of the obstacles. An ongoing challenge is to parameterise these spatially-averaged quantities in terms of the obstacle geometry and layout.
| Item Type: | Article |
|---|---|
| ISSNs: | 1895-6572 (print) |
| Related URLs: | |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Engineering Sciences University Structure - Pre August 2011 > School of Engineering Sciences > Aerodynamics & Flight Mechanics |
| Item ID: | 64315 |
| Date Deposited: | 19 Dec 2008 |
| Last Modified: | 01 Jun 2011 12:23 |
| Contributors: | Coceal, Omduth (Author) Thomas, T. Glyn (Author) Belcher, Stephen E. (Author) |
| Date: | September 2008 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/64315 |
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