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Turbulent flows interacting with varying density canopies

Published online by Cambridge University Press:  05 August 2009

Laurence Pietri
Affiliation:
Institut de Recherches sur les Phénomènes Hors Equilibre (IRPHE), Aix-Marseille Université, C.N.R.S., Technopôle de Château-Gombert, 49 rue F. Joliot-Curie, B.P. 146, 13384 Marseille Cedex 13, France
Alexandre Petroff
Affiliation:
Air Quality Research Division, Environment Canada,4905 Dufferin St. Toronto, M3H 5T4, Canada
Muriel Amielh
Affiliation:
Institut de Recherches sur les Phénomènes Hors Equilibre (IRPHE), Aix-Marseille Université, C.N.R.S., Technopôle de Château-Gombert, 49 rue F. Joliot-Curie, B.P. 146, 13384 Marseille Cedex 13, France
Fabien Anselmet
Affiliation:
Institut de Recherches sur les Phénomènes Hors Equilibre (IRPHE), Aix-Marseille Université, C.N.R.S., Technopôle de Château-Gombert, 49 rue F. Joliot-Curie, B.P. 146, 13384 Marseille Cedex 13, France École Centrale Marseille, Technopôle de Château-Gombert, 38 rue F. Joliot-Curie, 13451 Marseille Cedex 20, France
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Abstract

In the case of dense and homogeneous canopies, it is well-known that canopy flows are similar to mixing layer flows (so-called mixing layer analogy). When the canopy becomes sparser, a transition between the mixing layer and the boundary layer perturbed by interactions between element wakes occurs. This transition has still to be fully understood and characterized. An experimental work has been developed in order to study this transition for various density canopies.

Type
Research Article
Copyright
© AFM, EDP Sciences, 2009

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References

Grimmond, C.S.B., Oke, T.R., Aerodynamic properties of urban areas derived from analysis of surface form, J. Appl. Meteorol. 38 (1999) 12621292 2.0.CO;2>CrossRef
R.W. Macdonald, Modelling the mean velocity profile in the urban canopy layer. Boundary-Layer Meteorol. 97 (2000) 25–45
Britter, R.E., Hanna, S.R., Flow and dispersion in urban areas. Ann. Rev. Fluid. Mech. 35 (2003) 469496 CrossRef
Raupach, M.R., Finnigan, J.J., Brunet, Y., Coherent eddies in vegetation canopies: the mixing layer analogy, Boundary-Layer Meteorol. 78 (1996) 351382 CrossRef
J.J. Finnigan, Turbulence in plant canopies. Ann. Rev. Fluid. Mech. 32 (2000) 519–571 CrossRef
Belcher, S.E., Jerram, N., Hunt, J.C.R., Adjustment of a turbulent boundary layer to a canopy of roughness elements. J. Fluid. Mech. 488 (2003) 369398
Brunet, Y., Finnigan, J.J., Raupach, M.R., A wind tunnel study of air flow in waving wheat: single-point velocity statistics. Boundary-Layer Meteorol. 70 (1994) 95132
Ghisalberti, M., Nepf, H., The structure of the shear layer in flows over rigid and flexible canopies. Envir. Fluid. Mech. 6 (2006) 277301
R.N. Meroney, Characteristics of wind and turbulence in and above model forests. J. Appl. Meteor. 7 (1968) 780–788
Amiro, B.D., Comparison of turbulence statistics within three boreal forest canopies, Boundary-Layer Meteorol. 51 (1990) 99121 CrossRef
Green, S.R., Grace, J., Hutchings, N.J., Observations of turbulent air flow in three stands of widely spaced Sitka spruce, Agric For Meteorol. 74 (1995) 205225 CrossRef
Poggi, D., Porporato, A., Ridolfi, L., Albertson, J.D., Katul, G.G., The effect of vegetation density on canopy sub-layer turbulence, Boundary-Layer Meteorol. 111 (2004) 565587 CrossRef
Novak, M.D., Warland, J.S., Orchansky, A.L., Ketler, R., Green, S., Wind tunnel and field measurements of turbulent flow in forests, Part I: uniformly thinned stands. Boundary-Layer Meteorol. 95 (2000) 457495
Nepf, H., Ghisalberti, M., White, B., Murphy, E., Retention time and dispersion associated with submerged aquatic canopies, Water Resour Res 43 (2007) W0422, doi: 10.1029/2006WR005362 CrossRef