Abstract
Three-dimensional large eddy simulation is used to solve the problem for a homogeneous forest canopy. The development of the Kelvin-Helmholtz instability above the canopy leads to the formation of coherent structures in the atmosphere flow, which are reproduced in the calculations. The statistical characteristics of the flow obtained from the numerical modeling are compared with experimental data. The passive admixture transfer from the canopy to the clean atmosphere is studied for two cases, namely, for constant and variable coupled concentration of the impurity in the canopy.
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References
J.C. Kaimal and J.J. Finnigan, Atmospheric Boundary Layer Flows, Oxford Univ. Press, Oxford (1994).
A.S. Dubov, L.P. Bykova, and S.V. Marunich, Turbulence in Plant Canopies [in Russian], Gidrometeoizdat, Leningrad (1978).
J.J. Finnigan, “Turbulence in Plant Canopies,” Annu. Rev. Fluid Mech. 32, 519 (2000).
R.H. Shaw and U. Schumann, “Large-Eddy Simulation of Turbulent Flow above and within a Forest,” Boundary-Layer Meteorology 61, 47 (1992).
M. Kanda and M. Hino, “Organized Structures in Developing Turbulent Flow within and above a Plant Canopy Using a Large-Eddy Simulation,” Boundary-Layer Meteorology 68, 237 (1994).
H.-B. Su, R.H. Shaw, U.K.T. Paw, C.-H. Moeng, and P.P. Sullivan, “Turbulent Statistics of Neutrally Stratified Flow within and above a Sparse Forest from Large-Eddy Simulation and Field Observations,” Boundary-Layer Meteorology 88, 363 (1998).
R.H. Shaw, G. Den Hartog, and H.H. Neumann, “Influence of Foliar Density and Thermal Stability on Profiles of Reynolds Stress and Turbulence Intensity in a Deciduous Forest,” Boundary-Layer Meteorology 45, 391 (1988).
T. Watanabe, “Large-Eddy Simulation of Coherent Turbulence Structures Associated with Scalar Ramps over Plant Canopies,” Boundary-Layer Meteorology 112, 307 (2004).
S. Dupont, Y. Brunet, and N. Jarosz, “Eulerian Modelling of Pollen Dispersal over Heterogeneous Vegetation Canopies,” Agricultural Forest Meteorology 141, 82 (2006).
M. Huang, J.D. Cassiani, and J.D. Albertson, “Analysis of Coherent Structures within the Atmospheric Boundary Layer,” Boundary-Layer Meteorology 131, 147 (2009).
J.J. Finnigan and R.H. Shaw, “A Wind-Tunnel Study of Airflow in Waving Wheat: an EOF Analysis of the Structure of the Large-Eddy Motion,” Boundary-Layer Meteorology 96, 211 (2000).
M.R. Raupach, J.J. Finnigan, and Y. Brunet, “Coherent Eddies and Turbulence in Vegetation Canopies: the Mixing-Layer Analogy,” Boundary-Layer Meteorology 78, 351 (1996).
G. Accary, O. Bessonov, D. Fougère, S. Meradji, and S. Morvan, “Optimized Parallel Approach for 3D Modelling of Forest Fire Behaviour,” Lect. Notes Computer Sci. 4671, 96 (2007).
H.K. Versteeg and W. Malasekera, An Introduction to Computational Fluid Dynamics, Longman Scientific & Technical, Harlow, UK (1995).
J. Hunt, A. Wray, and P. Mion, “Eddies, Streams and Convergence Zones in Turbulent Flows,” Center of Turbulence Research Rep. CTR-S88 (1988), p. 193.
A. Michalke, “On the Inviscid Instability of the Hyperbolic-Tangent Velocity Profile,” J. Fluid Mech. 19, 543 (1964).
P. Comte, M. Lesieur, and E. Lamballais, “Large and Small-Scale Stirring of Vorticity and a Passive Scalar in a 3-D Temporal Mixing Layer,” Phys. Fluids A 4, 2761 (1992).
B.J. Marshall, C.J. Wood, B.A. Gardiner, R.E. Belcher, “Conditional Sampling of Canopy Gusts,” Boundary-Layer Meteorology 102, 225 (2002).
R.J. Adrian, “Hairpin Vortex Organization in Wall Turbulence,” Phys. Fluids 19, 041301–1 (2007).
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Original Russian Text © K.A. Gavrilov, D. Morvan, G. Accary, D.V. Lyubimov, S. Meradji, O.A. Bessonov, 2010, published in Vychislitel’naya Mekhanika Sploshnykh Sred, 2010, Vol. 3, No. 2, pp. 34–45.
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Gavrilov, K.A., Morvan, D., Accary, G. et al. Numerical modeling of coherent structures attendant on impurity propagation in the atmospheric boundary layer over a forest canopy. Fluid Dyn 46, 138–147 (2011). https://doi.org/10.1134/S0015462811010169
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DOI: https://doi.org/10.1134/S0015462811010169