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

Acta Geophysica

Volumn 56, Issue 3, 2008, Pages 862-875

  Coceal, Omduth ^a   Thomas, T Glyn ^b   Belcher, Stephen E ^a  

^a UNIVERSITY OF READING   (United Kingdom)

^b UNIVERSITY OF SOUTHAMPTON   (United Kingdom)

Author keywords

Bluff bodies; Direct numerical simulations; Double averaging methodology; Rough wall channel flow; Turbulent channel flow

Indexed keywords

COMPUTER SIMULATION; DIRECT NUMERICAL SIMULATION; DRAG; STATISTICAL METHODS; STATISTICS; TURBULENCE;

BLUFF BODIES; CANOPY TURBULENCE; DRAG FORCES; FLOW STATISTICS; HEIDELBERG (CO); NUMERICAL SIMULATIONS; SPRINGER (CO); TURBULENT DYNAMICS;

TURBULENT FLOW;

CANOPY REFLECTANCE; CHANNEL FLOW; DRAG; FLOW VELOCITY; METHODOLOGY; NUMERICAL MODEL; TURBULENT FLOW;

EID: 47249162383     PISSN: 18956572     EISSN: 18957455     Source Type: Journal    
DOI: 10.2478/s11600-008-0025-y     Document Type: Article

References (24)

1. Belcher, S.E. (2005), Mixing and transport in urban areas, Phil. Trans. Roy. Soc. 363, 2947-2963.
2. Belcher, S.E., N. Jerram and J.C.R. Hunt (2003), Adjustment of the atmospheric boundary layer to a canopy of roughness elements, J. Fluid Mechanics 488, 369-398.
3. Bohm, M., J.J. Finnigan and M.R. Raupach (2000), Dispersive fluxes in canopy flows: Just how important are they? Proc. 24 th Conference on Agricultural and Forest Meteorology, American Meteorological Society, Davis, CA.
4. Castro, I.P., and A.G. Robins (1977), The flow around a surface-mounted cube in uniform and turbulent streams, J. Fluid Mechanics 79, 307-335.
5. Cheng, H., and I.P. Castro (2002), Near wall flow over urban-like roughness, Bound.-Layer Meteor. 104, 229-259.
6. Cionco, R.M. (1965), A mathematical model for air flow in a vegetative canopy, J. Appl. Meteorol. 4, 517-522.
7. Coceal, O., and S.E. Belcher (2004), A canopy model of mean winds through urban areas, Quart. J. Roy. Met. Soc. 130, 1349-1372.
8. Coceal, O., and S.E. Belcher (2005), Mean winds through an inhomogeneous urban canopy, Bound.-Layer Meteor. 115, 47-68.
9. Coceal, O., T.G. Thomas, I.P. Castro and S.E. Belcher (2006), Mean flow and turbulence statistics over groups of urban-like cubical obstacles, Bound.-Layer Meteor. 121, 491-519.
10. Coceal, O., A. Dobre, and T.G. Thomas (2007a), Unsteady dynamics and organized structures from DNS over an idealized building canopy, Int. J. Climatol. 27, 1943-1953.
11. Coceal, O., A. Dobre, T.G. Thomas, and S.E. Belcher (2007b), Structure of turbulent flow overregular arrays of cubical roughness, J. Fluid Mechanics 589, 375-409.
12. Finnigan, J.J. (2000), Turbulence in plant canopies, Ann. Rev. Fluid Mech. 32, 519-572.
13. Kendall, J.M. (1985), Experimental study of disturbances produced in pretransitional laminar boundary layer by weak free stream turbulence, AIAA Paper 85, 1695.
14. Macdonald, R.W. (2000), Modelling the mean velocity profile in the urban canopy layer, Bound.-Layer Meteor. 97, 25-45.
15. Manes, C., D. Pokrajac, O. Coceal, and I. McEwan (2008), On the significance of form-induced stress in rough wall turbulent boundary layers, Acta Geophys. 56, 3.
16. Martilli, A., A. Clappier, and M.W. Rotach (2002), An urban surface exchange parameterisation for mesoscale models, Bound.-Layer Meteor. 104, 261-304.
17. Nikora, V., D. Goring, I. McEwan, and G. Griffiths (2001), Spatially-averaged open-channel flow over a rough bed, J. Hydraul. Eng. ASCE 127, 2, 123-133.
18. Poggi, D., G.G. Katul, and J.D. Albertson (2004), A note on the contribution of dispersive fluxes to momentum transfer within canopies, Bound.-Layer Meteor. 111, 615-621.
19. Pokrajac, D., L.J. Campbell, V. Nikora, C. Manes, and I. McEwan (2007), Quadrant analysis of persistent spatial velocity perturbations over square-bar roughness, Experiments in Fluids 42, 413-423.
20. Raupach, M.R., and R.H. Shaw (1982), Averaging procedures for flow within vegetation canopies, Bound.-Layer Meteor. 22, 79-90.
21. Raupach, M.R., J.J. Finnigan, and Y. Brunet (1996), Coherent eddies and turbulence in vegetation canopies: The mixing layer analogy, Bound.-Layer Meteor. 78, 351-382.
22. Reynolds, R.T., P. Hayden, I.P. Castro, and A.G. Robins (2007), Spanwise variations in nominally two-dimensional rough-wall boundary layers, Experiments in Fluids 42, 311-320.
23. Snyder, W.H., and I.P. Castro (2002), The critical Reynolds number for rough-wall boundary layers, J. Wind Eng. Ind. Aerodyn. 90, 41-54.
24. Yao, Y.F., T.G. Thomas, N.D. Sandham, and J.J.R. Williams (2001), Direct numerical simulation of turbulent flow over a rectangular trailing edge, Theoret. Comput. Fluid Dyn. 14, 337-358.