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Turbulence in Sparse, Organized Vegetative Canopies: A Large-Eddy Simulation Study

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Abstract

A large-eddy simulation study was performed to characterize turbulence in sparse, row-oriented canopies. This was accomplished by simulating a set of heterogeneous row-oriented canopies with varying row vegetation density and spacing. To determine the effects of heterogeneity, results were compared to horizontally homogeneous canopies with an equivalent ‘effective’ leaf area index. By using a proper effective leaf area index, plane-averaged mean velocities and bulk scaling parameters contained only small errors when heterogeneity was ignored. However, many cases had significantly larger second- and third-order velocity moments in the presence of heterogeneity. Some heterogeneous canopies also contained dispersive fluxes in the lower canopy that were over 20 % as large as the turbulent flux. Impacts of heterogeneity were most pronounced in the cases of large row leaf area density and widely spaced rows. Despite the substantial amount of open space in the sparse canopies, vertical velocity skewness and quadrant-hole analysis indicated that the flow behaved predominantly as a canopy layer even though integral length scales at the canopy top no longer followed mixing-layer scaling. This was supported by the fact that similar composite-averaged coherent structures could be readily identified in both the heterogeneous and homogeneous canopies. Heterogeneity had an effect on coherent structures, in that structure detection events were most likely to occur just upwind of the vegetation rows. In simulations with large row spacing, these structures also penetrated deeper into the canopy when compared to the equivalent homogeneous canopy.

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References

  • Albertson JD, Parlange MB (1999) Surface length scales and shear stress: implications for land–atmosphere interactions over complex terrain. Water Resour Res 35:2121–2132

    Article  Google Scholar 

  • Amiro BD (1990) Drag coefficients and turbulence spectra within three boreal forest canopies. Boundary-Layer Meteorol 52:227–246

    Article  Google Scholar 

  • Baldocchi DD, Hutchinson BA (1987) Turbulence in an almond orchard: vertical variation in turbulence statistics. Boundary-Layer Meteorol 40:127–146

    Article  Google Scholar 

  • Böhm M, Finnigan JJ, Raupach MR (2000) Dispersive fluxes and canopy flows: just how important are they? In: 24th symposium on agricultural and forest meteorology, vol 5(5), pp 106–107

  • Bohrer G, Katul GG, Walko RL, Avissar R (2009) Exploring the effects of microscale structural heterogeneity of forest canopies using large-eddy simulations. Boundary-Layer Meteorol 132:351–382

    Article  Google Scholar 

  • Brunet Y, Finnigan JJ, Raupach MR (1994) A wind tunnel study of air flow in waving wheat: single-point velocity statistics. Boundary-Layer Meteorol 70:95–132

    Article  Google Scholar 

  • Calaf M, Meneveau C, Meyers J (2010) Large eddy simulation study of fully developed wind-turbine array boundary layers. Phys Fluids 22(015):110

    Google Scholar 

  • Canuto C, Hussaini MY, Qaurteroni A, Zang TA (1988) Spectral methods in fluid dynamics. Springer, New York

    Book  Google Scholar 

  • Cassiani M, Katul GG, Albertson JD (2008) The effects of canopy leaf area index on airflow across forest edges: large-eddy simulation and analytical results. Boundary-Layer Meteorol 126:433–460

    Article  Google Scholar 

  • Cava D, Katul GG (2008) Spectral short-circuiting and wake production within the canopy trunk space of and alpine hardwood forest. Boundary-Layer Meteorol 126:415–431

    Article  Google Scholar 

  • Cescatti A, Marcolla B (2004) Drag coefficient and turbulence intensity in conifer canopies. Agric For Meteorol 121:197–206

    Article  Google Scholar 

  • Cheng H, Castro IP (2002) Near wall flow over urban-like roughness. Boundary-Layer Meteorol 104:229–259

    Article  Google Scholar 

  • Chester S, Meneveau C, Parlange MB (2007) Modeling turbulent flow over fractal trees with renormalized numerical simulation. J Comp Phys 225:427–448

    Article  Google Scholar 

  • Christen A, Vogt R (2004) Direct measurement of dispersive fluxes within a cork oak plantation. In: Proceedings of 26th conference on agricultural and forest meteorology. American Meteorological Society, Vancouver

  • Dupont S, Brunet Y (2008) Influence of foliar density profile on canopy flow: a large-eddy simulation study. Agric For Meteorol 148:976–990

    Article  Google Scholar 

  • Dwyer MJ, Patton EG, Shaw RH (1997) Turbulent kinetic energy budgets from a large-eddy simulation of airflow above and within a forest canopy. Boundary-Layer Meteorol 84:23–43

    Article  Google Scholar 

  • Finnigan JJ (2000) Turbulence in plant canopies. Annu Rev Fluid Mech 32:519–571

    Article  Google Scholar 

  • Finnigan JJ, Shaw RH (2000) A wind tunnel study of airflow in waving wheat: an EOF analysis of the structure of the large-eddy motion. Boundary-Layer Meteorol 96:211–255

    Article  Google Scholar 

  • Finnigan JJ, Shaw RH (2008) Double-averaging methodology and its application to turbulent flow in and above vegetation canopies. Environ Sci Technol 56:534–561

    Google Scholar 

  • Finnigan JJ, Shaw RH, Patton EG (2009) Turbulence structure above a vegetation canopy. J Fluid Mech 637:387–424

    Article  Google Scholar 

  • Fitzmaurice L, Shaw RH, Paw UKT, Patton EG (2004) Three-dimensional scalar microfront systems in a large-eddy simulation of vegetation canopy flow. Boundary-Layer Meteorol 112:107–127

    Article  Google Scholar 

  • Gladstone EA, Dokoozlian NK (2003) Influence of leaf area density and trellis/training system on light microclimate within grapevine canopies. Vitis 42:123–131

    Google Scholar 

  • Huang J, Cassiani M, Albertson JD (2009) The effects of vegetation density on coherent turbulent structures within the canopy sublayer: a large-eddy simulation study. Boundary-Layer Meteorol 133:253–275

    Article  Google Scholar 

  • Huang J, Cassiani M, Albertson JD (2011) Coherent turbulent structures across a vegetation density. Boundary-Layer Meteorol 140:1–22

    Article  Google Scholar 

  • Jackson PS (1981) On the displacement height in the logarithmic velocity profile. J Fluid Mech 111:15–25

    Article  Google Scholar 

  • Johnson LF, Roczen DE, Youkhana SK, Nemani RR, Bosch DF (2003) Mapping vineyard leaf area with multispectral satellite imagery. Comput Electron Agric 38:33–44

    Article  Google Scholar 

  • Judd MJ, Raupach MR, Finnigan JJ (1996) A wind tunnel study of turbulent flow around single and multiple windbreaks, Part I: velocity fields. Boundary-Layer Meteorol 80:127–165

    Article  Google Scholar 

  • Kaimal JC, Finnigan JJ (1994) Atmospheric boundary layer flows: their structure and measurement. Oxford University Press, New York, 289 pp

  • Kanda M, Hino M (1994) Organized structures in developing turbulent flow within and above a plant canopy, using a large eddy simulation. Boundary-Layer Meteorol 68:237–257

    Article  Google Scholar 

  • Lauri PE (2009) Developing a new paradigm for apple training. Compact Fruit Tree 42:17–19

    Google Scholar 

  • Lu SS, Willmarth WW (1973) Measurements of the structure of Reynolds stress in a turbulent boundary layer. J Fluid Mech 60:481–571

    Article  Google Scholar 

  • Mason PJ, Callen NS (1986) On the magnitude of the subgrid-scale eddy coefficient in large-eddy simulations of turbulent channel flow. J Fluid Mech 162:439–462

    Article  Google Scholar 

  • McAneney KJ, Judd MJ (1991) Multiple windbreaks: an aeolean ensemble. Boundary-Layer Meteorol 54: 129–146

    Google Scholar 

  • Novak MD, Warland JS, Orchansky AL, Ketler R, Green S (2000) Wind tunnel and field measurements of turbulent flow in forests, Part I: uniformly thinned stands. Boundary-Layer Meteorol 95:457–495

    Article  Google Scholar 

  • Patton EG, Shaw RH, Paw U KT, Moeng CH (1994) A comparison of two large-eddy simulations of turbulent flow above and within a forest canopy. In: 21st conference on agriculture and forest meteorology, vol 4(7), pp 88–91

  • Patton EG, Shaw RH, Paw U KT (1995) Large-eddy simulation of a forest: Influence of canopy structure on turbulent kinetic energy. In: 11th symposium on boundary layers and turbulence, vol 15(2), pp 525–528

  • Patton EG, Shaw RH, Judd MJ, Raupach MR (1998) Large-eddy simulation of windbreak flow. Boundary-Layer Meteorol 87:275–306

    Article  Google Scholar 

  • Patton EG, Sullivan PP, Davis KJ (2003) The influence of a forest canopy on top-down and bottom-up diffusion in the planetary boundary layer. Q J R Meteorol Soc 129:1415–1434

    Article  Google Scholar 

  • Plate EJ (1971) The aerodynamics of shelter belts. Agric Meteorol 8:203–222

    Article  Google Scholar 

  • Poggi D, Katul GG (2008) Micro- and macro-dispersive fluxes in canopy flows. Environ Sci Technol 56: 778–800

    Google Scholar 

  • Poggi D, Porporato A, Ridolfi L, Albertson JD, Katul GG (2004a) The effect of vegetation density on canopy sub-layer turbulence. Boundary-Layer Meteorol 111:565–587

    Article  Google Scholar 

  • Poggi D, Porporato A, Ridolfi L, Albertson JD, Katul GG (2004b) Interaction between large and small scales in the canopy sublayer. Geophys Res Lett 31:L05,102

    Article  Google Scholar 

  • Pope S (2000) Turbulent flows. Cambridge University Press, UK, 771 pp

  • Raupach MR, Shaw RH (1982) Averaging procedures for flow within vegetation canopies. Boundary-Layer Meteorol 22:79–90

    Article  Google Scholar 

  • Raupach MR, Finnigan JJ, Brunet Y (1996) Coherent eddies and turbulence in vegetation canopies: the mixing-layer analogy. Boundary-Layer Meteorol 78:351–382

    Article  Google Scholar 

  • Reynolds RT, Hayden P, Castro IP, Robins AG (2007) Spanwise variations in nominally two-dimensional rough-wall boundary layers. Exp Fluids 42:311–320

    Article  Google Scholar 

  • Robinson SK (1991) Coherent motions in the turbulent boundary layer. Annu Rev Fluid Mech 23:601–639

    Article  Google Scholar 

  • Schlegel F, Stiller J, Bienert A, Maas HG, Queck R, Bernhofer C (2012) Large-eddy simulation of inhomogeneous canopy flows using high resolution terrestrial laser scanning data. Boundary-Layer Meteorol 142:223–243

    Article  Google Scholar 

  • Shaw RH (1977) Secondary wind speed maxima inside plant canopies. J Appl Meteorol 16:514–521

    Article  Google Scholar 

  • Shaw RH, Patton EG (2003) Canopy element influences on resolved- and subgrid-scale energy within a large-eddy simulation. Agric For Meteorol 115:5–17

    Article  Google Scholar 

  • Shaw RH, Schumann U (1992) Large-eddy simulation of turbulent flow above and within a forest. Boundary-Layer Meteorol 61:47–64

    Article  Google Scholar 

  • Shaw RH, Brunet Y, Finnigan JJ, Raupach MR (1995) A wind tunnel study of air flow in waving wheat: two-point velocity statistics. Boundary-Layer Meteorol 76:349–376

    Article  Google Scholar 

  • Stoll R, Porté-Agel F (2006a) Dynamic subgrid-scale models for momentum and scalar fluxes in large-eddy simulations of neutrally stratified atmospheric boundary layers over heterogeneous terrain. Water Resour Res 42:W01,409

    Article  Google Scholar 

  • Stoll R, Porté-Agel F (2006b) Effect of roughness on surface boundary conditions for large-eddy simulation. Boundary-Layer Meteorol 118:169–187

    Article  Google Scholar 

  • Stoll R, Porté-Agel F (2008) Large-eddy simulation of the stable atmospheric boundary layer using dynamic models with different averaging schemes. Boundary-Layer Meterology 126:1–28

    Article  Google Scholar 

  • Stoll R, Porté-Agel F (2009) Surface heterogeneity effects on regional-scale fluxes in stable boundary layers: surface temperature transitions. J Atmos Sci 66(2):412–431

    Article  Google Scholar 

  • Stull RB (1988) An introduction to boundary layer meteorology. Kluwer, Dordrecht, 670 pp

  • Su HB, Schmid HP, Vogel CS, Curtis PS (1998) Effects of canopy morphology and thermal stability on mean flow and turbulence statistics observed inside a mixed hardwood forest. Boundary-Layer Meteorol 88:363–397

    Article  Google Scholar 

  • Talaie A, Shojaie-Saadee M, Dadashpur A, Asgari-Sarcheshmeh M (2011) Fruit quality in five apple cultivars trees trained to intensive training system: Geneva y-trellis. Genetika 43:153–161

    Article  Google Scholar 

  • Tarara J, Ferguson J, Hoheisel G (2005) Asymmetrical canopy architecture due to prevailing wind direction and row orientation creates an imbalance in irradiance at the fruiting zone in grapevines. Agric For Meteorol 135:144–155

    Article  Google Scholar 

  • Thom AS (1968) The exchange of momentum, mass and heat between an artificial leaf and airflow in a wind tunnel. Q J R Meteorol Soc 94:44–55

    Article  Google Scholar 

  • Thom AS (1971) Momentum absorption by vegetation. Q J R Meteorol Soc 97:414–428

    Article  Google Scholar 

  • Thomas C, Foken T (2007) Flux contribution of coherent structures and its implications for the energy and matter in a tall spruce canopy. Boundary-Layer Meteorol 123:317–337

    Article  Google Scholar 

  • Townsend AA (1976) The structure of turbulent shear flow, 2nd edn. Cambridge University Press, UK, 442 pp

  • van Hout RE (2007) PIV measurements in the atmospheric boundary layer within and above a mature corn canopy, Part I: statistics and energy flux. J Atmos Sci 64:2805–2824

    Article  Google Scholar 

  • Wan F, Porté-Agel F, Stoll R (2007) Evaluation of dynamic subgrid-scale models in large-eddy simulations of neutral flow over a two-dimensional sinusoidal hill. Atmos Environ 41:2719–2728

    Article  Google Scholar 

  • Wang H, Takle ES (1995) Boundary-layer flow and turbulence near porous obstacles. Boundary-Layer Meteorol 74:73–88

    Article  Google Scholar 

  • Watanabe T (2004) Large-eddy simulation of coherent turbulence structures associated with scalar ramps over plant canopies. Boundary-Layer Meteorol 112:307–341

    Article  Google Scholar 

  • Wilson JD (1985) Numerical studies of flow through a windbreak. J Wind Eng Ind Aerodyn 21:119–154

    Article  Google Scholar 

  • Wilson JD, Yee E (2003) Calculation of winds disturbed by an array of fences. Agric For Meteorol 115:31–50

    Article  Google Scholar 

  • Yang B, Raupach MR, Shaw RH, Paw UKT, Morse AP (2006a) Large-eddy simulation of turbulent flow across a forest edge, Part I: flow statistics. Boundary-Layer Meteorol 120:377–412

    Article  Google Scholar 

  • Yang B, Morse AP, Shaw RH, Paw UKT (2006b) Large-eddy simulation of turbulent flow across a forest edge. Part II: momentum and kinetic energy budgets. Boundary-Layer Meteorol 121:433–457

    Article  Google Scholar 

  • Yi C (2007) Momentum transfer within canopies. J Appl Meteorol Clim 47:262–275

    Article  Google Scholar 

  • Yue W, Parlange MB, Meneveau C, Zhu W, van Hout R, Katz J (2007) Large-eddy simulation of plant canopies using plant-scale representation. Boundary-Layer Meteorol 124:183–203

    Article  Google Scholar 

  • Zhou J, Adrian RJ, Balachandar S, Kendall TM (1999) Mechanisms for generating coherent packets of hairpin vortices in channel flow. J Fluid Mech 387:353–396

    Article  Google Scholar 

  • Zhuang Y, Wilson JD (1994) Coherent motions in windbreak flow. Boundary-Layer Meteorol 70:151–169

    Article  Google Scholar 

Download references

Acknowledgments

This research was partially supported by the University of Utah Research Foundation and National Science Foundation grant IDR CBET-PDM 113458. An allocation of computer time from the Center for High Performance Computing at the University of Utah is gratefully acknowledged.

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  1. Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, USA

    Brian N. Bailey & Rob Stoll

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  1. Brian N. Bailey
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Correspondence to Rob Stoll.

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Bailey, B.N., Stoll, R. Turbulence in Sparse, Organized Vegetative Canopies: A Large-Eddy Simulation Study. Boundary-Layer Meteorol 147, 369–400 (2013). https://doi.org/10.1007/s10546-012-9796-4

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