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Spatially-averaged flow statistics within a canopy of large bluff bodies: results from direct numerical simulations

Record type: Article

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.

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Citation

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), pp. 862-875. (doi:10.2478/s11600-008-0025-y).

More information

Published date: September 2008
Organisations: Aerodynamics & Flight Mechanics

Identifiers

Local EPrints ID: 64315
URI: http://eprints.soton.ac.uk/id/eprint/64315
ISSN: 1895-6572
PURE UUID: ec7698b8-410b-49d7-8c53-d4d515c3568e

Catalogue record

Date deposited: 19 Dec 2008
Last modified: 17 Jul 2017 14:13

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