Academic literature on the topic 'Submerged and emergent rigid vegetation'

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Journal articles on the topic "Submerged and emergent rigid vegetation"

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D’Ippolito, Antonino, Francesco Calomino, Giancarlo Alfonsi, and Agostino Lauria. "Flow Resistance in Open Channel Due to Vegetation at Reach Scale: A Review." Water 13, no. 2 (2021): 116. http://dx.doi.org/10.3390/w13020116.

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Vegetation on the banks and flooding areas of watercourses significantly affects energy losses. To take the latter into account, computational models make use of resistance coefficients based on the evaluation of bed and walls roughness besides the resistance to flow offered by vegetation. This paper, after summarizing the classical approaches based on descriptions and pictures, considers the recent advancements related to the analytical methods relative both to rigid and flexible vegetation. In particular, emergent rigid vegetation is first analyzed by focusing on the methods for determining
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King, A. T., R. O. Tinoco та E. A. Cowen. "A k–ε turbulence model based on the scales of vertical shear and stem wakes valid for emergent and submerged vegetated flows". Journal of Fluid Mechanics 701 (9 травня 2012): 1–39. http://dx.doi.org/10.1017/jfm.2012.113.

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AbstractFlow and transport through aquatic vegetation is characterized by a wide range of length scales: water depth ($H$), plant height ($h$), stem diameter ($d$), the inverse of the plant frontal area per unit volume (${a}^{\ensuremath{-} 1} $) and the scale(s) over which $a$ varies. Turbulence is generated both at the scale(s) of the mean vertical shear, set in part by $a$, and at the scale(s) of the stem wakes, set by $d$. While turbulence from each of these sources is dissipated through the energy cascade, some shear-scale turbulence bypasses the lower wavenumbers as shear-scale eddies do
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Horstman, Erik M., Karin R. Bryan, Julia C. Mullarney, and Conrad A. Pilditch. "MODEL VERSUS NATURE: HYDRODYNAMICS IN MANGROVE PNEUMATOPHORES." Coastal Engineering Proceedings, no. 35 (June 23, 2017): 19. http://dx.doi.org/10.9753/icce.v35.management.19.

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Water flows through submerged and emergent vegetation control the transport and deposition of sediment in coastal wetlands. Many past studies into the hydrodynamics of vegetation fields have used idealized vegetation mimics, mostly rigid dowels of uniform height. In this study, a canopy of real mangrove pneumatophores was reconstructed in a flume to quantify flow and turbulence within and above this canopy. At a constant flow forcing, an increase in pneumatophore density, from 71 m-2 to 268 m-2, was found to cause a reduction of the within-canopy flow velocities, whereas the over-canopy flows
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Tarkowska-Kukuryk, Monika. "Effect of Phosphorous Loadings on Macrophytes Structure and Trophic State of Dam Reservoir on a Small Lowland River (Eastern Poland)." Archives of Environmental Protection 39, no. 3 (2013): 33–46. http://dx.doi.org/10.2478/aep-2013-0029.

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Abstract The main objective of the study was to evaluate if macrophytes structure and trophic status of dam reservoir Kraśnik on a small lowland river Wyżnica are determined by phosphorous loadings. Studies were conducted seasonally in May, July and October during the years 2008-2009. Samples were taken at four sites: Site 1 - inflow of the Wyżnica River to pre-dam, Site 2 − pre-dam, Site 3 − dam reservoir and Site 4 - outflow of the Wyżnica River from dam reservoir. Physical and chemical parameters (temperature, Secchi disc depth, dissolved oxygen, pH, conductivity, total suspension, chloroph
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Huang, Zhenhua, Yu Yao, Shawn Y. Sim, and Yao Yao. "Interaction of solitary waves with emergent, rigid vegetation." Ocean Engineering 38, no. 10 (2011): 1080–88. http://dx.doi.org/10.1016/j.oceaneng.2011.03.003.

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Ryu, Yonguk, Joongu Kang, Un Ji, Sanghwa Jung, Changlae Jang, and Ellis Penning. "Flow patterns over vegetation patches in the natural channel." E3S Web of Conferences 40 (2018): 02059. http://dx.doi.org/10.1051/e3sconf/20184002059.

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This study carried out experiments to investigate the effects of vegetation patches of rooted willows on the flow pattern. Stream-scale experiments on vegetated flows were performed for various hydraulic conditions: emergent and submerged conditions of vegetation. Vegetation patches were arranged by alternative bar formation and the flows in vegetated and non-vegetated sections were compared. Three-dimensional flow velocity was measured by ADV (Acoustic Doppler Velocimeter) and ADCP (Acoustic Doppler Current Profiler). Vertical, cross-sectional, and longitudinal velocity distributions were pro
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Erduran, K. S., and V. Kutija. "Quasi-three-dimensional numerical model for flow through flexible, rigid, submerged and non-submerged vegetation." Journal of Hydroinformatics 5, no. 3 (2003): 189–202. http://dx.doi.org/10.2166/hydro.2003.0015.

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The effects of the resistance caused by vegetation on flow velocity and water depth has become a major interest for ecologists and those who deal with river restoration projects. Some numerical and experimental works have been performed to analyse and formulate the drag effects induced by vegetation. Here we introduce a quasi-three-dimensional (Q3D) numerical solution, which is constructed by coupling the finite volume solution of the two-dimensional shallow water equations with a finite difference solution of Navier–Stokes equations for vertical velocity distribution. The drag forces are incl
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Aberle, Jochen, and Juha Järvelä. "Flow resistance of emergent rigid and flexible floodplain vegetation." Journal of Hydraulic Research 51, no. 1 (2013): 33–45. http://dx.doi.org/10.1080/00221686.2012.754795.

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Chakraborty, Paromita, and Arindam Sarkar. "Study of flow characteristics within randomly distributed submerged rigid vegetation." Journal of Hydrodynamics 31, no. 2 (2018): 358–67. http://dx.doi.org/10.1007/s42241-018-0132-4.

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Kim, Hyung Suk, Mohamed Nabi, Ichiro Kimura, and Yasuyuki Shimizu. "Computational modeling of flow and morphodynamics through rigid-emergent vegetation." Advances in Water Resources 84 (October 2015): 64–86. http://dx.doi.org/10.1016/j.advwatres.2015.07.020.

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Dissertations / Theses on the topic "Submerged and emergent rigid vegetation"

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Liu, David. "Flow through Rigid Vegetation Hydrodynamics." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/35068.

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Better understanding of the role of vegetation in the transport of fluid and pollutants requires improved knowledge of the detailed flow structure within the vegetation. Instead of spatial averaging, this study uses discrete measurements at multiple locations within the canopy to develop velocity and turbulence intensity profiles and observe the changes in the flow characteristics as water travels through a vegetation array simulated by rigid dowels. Velocity data were collected with a one dimensional laser Doppler velocimeter (LDV) under single layer emergent and submerged flow conditions, an
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El, Allaoui Nazha. "Modified hydrodynamics in fragmented canopies exposed to oscillatory flows." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/403066.

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The general objective of this doctoral thesis has been to contribute to understand the modification of hydrodynamics in fragmented canopies. The effect of different parameters such as the canopy density, the plant height and flexibility and the architecture of the gap has been studied. Ecological implications of the results have been discussed. Results point that the fluxes of biological particles, nutrients and sediments in fragmented canopies are modified compared with those for non-fragmented canopies, impacting on their ecological function. Therefore, canopies may optimize their structural
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Pujol, Company M. Dolors. "Waves and turbulence on submerged and emergent aquatic vegetation." Doctoral thesis, Universitat de Girona, 2013. http://hdl.handle.net/10803/111336.

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Coastal zones are governed by physical forces originating from tidal currents, waves, winds and night convection, amongst others, and are characterized by the presence of canopy meadows. This thesis studies the hydrodynamic in a fluid dominated by: nearly isotropic turbulence, progressive waves and breaking waves in different canopy models. Under nearly isotropic turbulence sheltering is enhanced by a reduction in the plant-to-plant distance. Under progressive waves sheltering is associated with the reduction of wave velocity at the top of submerged rigid canopy. Sheltering observed in the su
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Maji, S., P. R. Hanmaiahgari, R. Balachandar, Jaan H. Pu, A. M. Ricardo, and R. M. L. Ferreira. "A review on hydrodynamics of free surface flows in emergent vegetated channels." MDPI, 2020. http://hdl.handle.net/10454/17820.

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Yes<br>This review paper addresses the structure of the mean flow and key turbulence quantities in free-surface flows with emergent vegetation. Emergent vegetation in open channel flow affects turbulence, flow patterns, flow resistance, sediment transport, and morphological changes. The last 15 years have witnessed significant advances in field, laboratory, and numerical investigations of turbulent flows within reaches of different types of emergent vegetation, such as rigid stems, flexible stems, with foliage or without foliage, and combinations of these. The influence of stem diameter, volum
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Grace, Kevin. "Phosphorus removal and soil stability within emergent and submerged vegetation communities in treatment wetlands." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0001219.

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Robertson, Francis. "An experimental investigation of the drag on idealised rigid, emergent vegetation and other obstacles in turbulent free-surface flows." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/an-experimental-investigation-of-the-drag-on-idealised-rigid-emergent-vegetation-and-other-obstacles-in-turbulent-freesurface-flows(07165357-67da-461d-a6a2-ed4970e2cb0c).html.

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Vegetation is commonly modelled as emergent arrays of rigid, circular cylinders. However, the drag coefficient (CD) of real stems or trunks is closer to that of cylinders with a square cross-section. In this thesis, vegetation has been idealised as square cylinders in laboratory experiments with a turbulence intensity of the order of 10% which is similar to that of typical river flows. These cylinders may also represent other obstacles such as architectural structures. This research has determined CD of an isolated cylinder and cylinder pairs as a function of position as well as the average dr
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Allen, Jon Scott. "An Analysis of Self-similarity, Momentum Conservation and Energy Transport for an Axisymmetric Turbulent Jet through a Staggered Array of Rigid Emergent Vegetation." Thesis, 2013. http://hdl.handle.net/1969.1/151041.

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Marsh vegetation is widely considered to offer protection against coastal storm damage, and vegetated flow has thus become a key area of hydrodynamic research. This study investigates the utility of simulated Spartina alterniora marsh vegetation as storm protection using an ADV measurement technique, and is the first to apply jet self-similarity analysis to characterize the overall mean and turbulent flow properties of a three-dimensional axisymmetric jet through a vegetated array. The mean axial flow of a horizontal axisymmetric turbulent jet is obstructed by three configurations of staggere
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Book chapters on the topic "Submerged and emergent rigid vegetation"

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Monti, A., M. Omidyeganeh, and A. Pinelli. "Large-Eddy Simulation of an Open Channel Flow with Submerged Rigid Vegetation." In Direct and Large-Eddy Simulation XI. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04915-7_75.

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Mutukuru, Munireddy G., P. Kishorekumar Reddy, and Gorle Giridhar. "Experimental and Numerical Modeling of Wave Transmission Over Submerged Breakwater and Rigid Vegetation." In Lecture Notes in Civil Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-6389-2_25.

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Sahu, Chitrangini, and Prashanth Reddy Hanmaiahgari. "Scaling of Open Channel Flow Velocities in Emergent, Sparse and Rigid Vegetation Patch with Rough Bed Interior of the Patch." In Water Science and Technology Library. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59148-9_18.

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"Boundary layer development over rigid submerged vegetation." In Fluid Mechanics of Environmental Interfaces. Taylor & Francis, 2008. http://dx.doi.org/10.4324/9780203895351-18.

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Henderson, Peter A. "Absolute Population Estimates by Sampling a Unit of Aquatic Habitat." In Southwood's Ecological Methods. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198862277.003.0005.

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Methods for quantitative sampling of open marine and freshwaters are described, including fishing nets, plankton nets, pump samplers, the Patalas–Schindler volume sampler, and specialized methods for freshwater insects. Specialist methods for sampling freshwater floating, emergent, and submerged vegetation are described. Methods for quantitatively sampling the bottom fauna in the various substrates found in streams, rivers, lakes, and the sea bed are reviewed. The use of various poisons and anaesthetics for sampling fish are described.
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Schnauder, I. "Interaction processes in a straight compound channel with rigid and flexible emergent floodplain vegetation." In River Flow 2004. CRC Press, 2004. http://dx.doi.org/10.1201/b16998-46.

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Negm, A. "Variations and correlation of roughness indices of non-vertical non-rigid fully submerged vegetation in open channels." In River Flow 2004. CRC Press, 2004. http://dx.doi.org/10.1201/b16998-56.

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Khuntia, J. R., S. Proust, and K. K. Khatua. "Unsteady open-channel flows over rough bed with and without emergent rigid vegetation: A laboratory experiment." In River Flow 2020. CRC Press, 2020. http://dx.doi.org/10.1201/b22619-212.

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Conference papers on the topic "Submerged and emergent rigid vegetation"

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Wilkerson, G. V. "Depth-Averaged Velocity in Channels with Submerged and Unsubmerged Rigid Vegetation." In World Water and Environmental Resources Congress 2005. American Society of Civil Engineers, 2005. http://dx.doi.org/10.1061/40792(173)571.

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Tognin, Davide, Paolo Peruzzo, Francesca De Serio, et al. "Laboratory experiments on solitary wave interaction with rigid emergent vegetation: some preliminary results." In 2018 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea). IEEE, 2018. http://dx.doi.org/10.1109/metrosea.2018.8657845.

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Proust, S., J. Faure, V. Dupuis, C. Berni, and A. Paquier. "1D+ model for overbank flows with a transition bed friction—emergent rigid vegetation drag." In The International Conference On Fluvial Hydraulics (River Flow 2016). CRC Press, 2016. http://dx.doi.org/10.1201/9781315644479-350.

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Xue, W., S. Wu, X. Wu, J. Zhou, and J. Dai. "Incipient motion of sediment in rectangular open-channel flow with a submerged rigid vegetation zone." In The 8th International Conference on Scour and Erosion. CRC Press, 2016. http://dx.doi.org/10.1201/9781315375045-118.

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Musleh, Fuad A., and James F. Cruise. "Testing the Validity of Manning's n Calculated by Modeling the Flow Through Rigid Non-Submerged Vegetation." In Geo Jordan Conference 2004. American Society of Civil Engineers, 2004. http://dx.doi.org/10.1061/40735(143)12.

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Gupta, Aditya, Manasa R. Behera, and Amin Heidarpour. "Numerical Modeling of Wave Damping Induced by Emerged Moving Vegetation." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18588.

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Abstract The unprecedented risk of global warming has put the coastal population at greater risk from coastal hazards due to an increase in sea level and other storm-related activities. Coastal vegetations are one of the soft solutions that can be implemented for wave mitigation. This study aims to investigate the wave damping effect of a regular wave by emergent moving coastal vegetation. Smoothed Particle Hydrodynamics (SPH), a particle-based method is used for generating fluid particles and Differential Variational Inequality (DVI) is coupled with SPH to deal with the dynamics of moving veg
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