Bibliografías temáticas / Liquid film flow over complex surface

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Literatura académica sobre el tema "Liquid film flow over complex surface"

Autor: Grafiati
Publicado: 12 de octubre de 2024
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "Liquid film flow over complex surface"

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Pavlenko, Aleksandr, Oleg Volodin, and Vladimir Serdyukov. "The Features Of The Film Flow Of Liquid Nitrogen Over The Structured Surfaces." Siberian Journal of Physics 10, no. 1 (2015): 33–41. http://dx.doi.org/10.54362/1818-7919-2015-10-1-33-41.

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Experimental results on hydrodynamics of cryogenic liquid film flow over the surface of the single elements of the structured packing are presented. Based on the comparison of experimental data, the effect of microtexture and perforation on the zones of liquid film spreading over a corrugated surface is shown for different values of the film Reynolds number. The results of experiments on dependence of a relative portion of liquid held in a single irrigated channel of the corrugated plates with different thicknesses on irrigation degree are presented. It is shown that microtexture, its directio
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Pavlenko, Aleksandr, Oleg Volodin, and Vladimir Serdyukov. "Effect Of The Rib Inclination Angle On Liquid Film Spreading Over The Structured Surface." Siberian Journal of Physics 10, no. 1 (2015): 42–49. http://dx.doi.org/10.54362/1818-7919-2015-10-1-42-49.

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Results of experimental studies on hydrodynamics of the film flow of liquid nitrogen over the surface of the single elements of structured packing are presented. The effect of inclination angle of the large ribs and perforation on the zones of liquid film spreading over the corrugated surface with microtexture at different Reynolds numbers of the film is shown based on a comparison of experimental data. It is shown that the angle of large rib inclination has a significant influence on redistribution of the local flow rate of liquid flowing on the surface with complex geometry. Analysis of resu
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Dressaire, Emilie, Laurent Courbin, Adrian Delancy, Marcus Roper, and Howard A. Stone. "Study of polygonal water bells: inertia-dominated thin-film flows over microtextured surfaces." Journal of Fluid Mechanics 721 (March 13, 2013): 46–57. http://dx.doi.org/10.1017/jfm.2013.60.

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AbstractMicrotextured surfaces are commonly used to study complex hydrodynamic phenomena such as spreading and splashing of liquid droplets. However, although surface topography is known to modify near-surface flow, there is no theory able to quantitatively predict the dramatic changes in dynamics of liquid spreading and splashing. Here, we investigate experimentally water bells formed on micropatterned surfaces in order to characterize the hydrodynamics of inertia-dominated flows through regular porous layers. Water bells are self-suspended catenary-shaped liquid films created when a jet impi
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Penn, David G., Martin Lopez de Bertodano, Paul S. Lykoudis, and Stephen G. Beus. "Dry Patch Stability of Shear Driven Liquid Films." Journal of Fluids Engineering 123, no. 4 (2001): 857–62. http://dx.doi.org/10.1115/1.1412459.

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The breakdown of the liquid film at the wall in annular gas-liquid flow may lead to the formation of a stable dry patch. For the case of heat transfer surfaces this causes a hot spot. Dry patch stability depends on a balance of body and surface forces. In the present study the film is driven by the interfacial shear force and the gravity force is negligible. Hartley and Murgatroyd proposed a model for dry patches of shear driven films based on a balance of surface tension and inertia but the film contact angle had to be adjusted to an unrealistic value to fit the model to experimental data. Mu
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Silva, F. O., I. R. Siqueira, M. S. Carvalho, and R. L. Thompson. "Slot coating flows with a Boussinesq–Scriven viscous interface." Physics of Fluids 35, no. 4 (2023): 042106. http://dx.doi.org/10.1063/5.0147030.

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We present a computational study of free surface flows with rheologically complex interfaces in the film formation region of a slot coater. The equations of motion for incompressible Newtonian liquids in the bulk flow are coupled with the Boussinesq–Scriven constitutive equation for viscous interfaces in the dynamic boundary condition at the liquid-air free surface and solved with a mixed finite element method. We show that the interfacial viscosity plays a major role in the flow dynamics and operating limits of slot coating. We find that the interfacial viscosity makes viscous interfaces gene
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Pavlenko, Aleksandr, Anton Surtaev, Oleg Volodin, and Vladimir Serdyukov. "Distribution Of Liquid Nitrogen At The Film Flow In The Single Elements Of The Structured Packing." Siberian Journal of Physics 11, no. 2 (2016): 12–20. http://dx.doi.org/10.54362/1818-7919-2016-11-2-12-20.

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Experimental results on the parameters of the film flow of cryogenic liquid over the surface of single elements of the structured packing consisting of two corrugated plates are presented. The effect of microtexture and its direction relative to the direction of gravity on liquid distribution along the packing at different irrigation degrees is shown based on the comparison with experimental data. Experimental results on the degree of liquid flowing through the contact points in the packing with plates are presented relative to the irrigation degree. It is shown that microtexture and its direc
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Shmyrov, Andrey. "Thermo-capillary flow in a Hele-Show cell as a tool for research of the dynamics of insoluble surfactant monolayer." EPJ Web of Conferences 213 (2019): 02073. http://dx.doi.org/10.1051/epjconf/201921302073.

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The occurrence of thermocapillary convection in a Hele-Shaw cell in the presence of the surfactant film on the free surface is experimentally investigated. It is shown that at certain values of the control parameter two different zones are formed on the surface – the zone free from impurities and the stagnant zone. In the first zone, the onset and development of an intense Marangoni convection is observed, while in the stagnant zone the velocity of the motion on the surface is lower by about two orders of magnitude. This study clearly demonstrates that the analysis of the temperature profile p
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Dietze, Georg F., W. Rohlfs, K. Nährich, R. Kneer, and B. Scheid. "Three-dimensional flow structures in laminar falling liquid films." Journal of Fluid Mechanics 743 (March 4, 2014): 75–123. http://dx.doi.org/10.1017/jfm.2013.679.

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AbstractFull numerical simulations of the Navier–Stokes equations for four cases of vertically falling liquid films with three-dimensional surface waves have been performed. Flow conditions are based on several previous experimental studies where the streamwise and spanwise wavelengths were imposed, which we exploit by simulating periodic wave segments. The considered flows are laminar but approach conditions at which intermittent wave-induced turbulence has been observed elsewhere. Working liquids range from water to silicone oil and cover a large interval of the Kapitza number ($\textit {Ka}
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Belmiloud, Naser. "Characterizing Turbulence and Wave Dynamics Under Rotation: Enhancing Semiconductor Processes through CFD Analysis and High-Speed Imaging." ECS Meeting Abstracts MA2024-02, no. 31 (2024): 2278. https://doi.org/10.1149/ma2024-02312278mtgabs.

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Introduction In semiconductor manufacturing, precision in wafer processing is crucial for advancing device technology. The spinning system, essential for wafer cleaning and etching, significantly impacts device quality by facilitating dynamic air-liquid interactions, affecting surface chemistry. This study utilizes Computational Fluid Dynamics (CFD) and high-speed camera analysis to explore turbulence and wave dynamics, confronting Fast Fourier Transform (FFT) analysis against the Kolmogorov cascade to improve manufacturing outcomes by understanding these dynamics more thoroughly. Experimental
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Cuccia, Nicholas L., Suraj Pothineni, Brady Wu, Joshua Méndez Harper, and Justin C. Burton. "Pore-size dependence and slow relaxation of hydrogel friction on smooth surfaces." Proceedings of the National Academy of Sciences 117, no. 21 (2020): 11247–56. http://dx.doi.org/10.1073/pnas.1922364117.

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Hydrogels consist of a cross-linked polymer matrix imbibed with a solvent such as water at volume fractions that can exceed 90%. They are important in many scientific and engineering applications due to their tunable physiochemical properties, biocompatibility, and ultralow friction. Their multiphase structure leads to a complex interfacial rheology, yet a detailed, microscopic understanding of hydrogel friction is still emerging. Using a custom-built tribometer, here we identify three distinct regimes of frictional behavior for polyacrylic acid (PAA), polyacrylamide (PAAm), and agarose hydrog
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Tesis sobre el tema "Liquid film flow over complex surface"

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Shetty, Sanat Achanna. "Liquid spreading and thin film flows over complex surfaces /." Access abstract and link to full text, 1995. http://0-wwwlib.umi.com.library.utulsa.edu/dissertations/fullcit/9610610.

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Hoang, Van Quan. "Well-Balanced PISO Algorithm, Height Function, Dynamic Contact Angle, Liquid Film Flow over Complex Surface." Electronic Thesis or Diss., Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2024. http://www.theses.fr/2024ESMA0013.

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Le défi de construire un solveur pour la simulation du refroidissement à l'huile dans les extrémités des bobinages des moteurs électriques est l'objet de cette étude. Le premier segment se concentre sur les phénomènes de transfert thermique du flux de film liquide sur une surface complexe pré-mouillée. L'objectif est de comprendre les mécanismes d'interaction entre le liquide et la surface complexe. Une analyse détaillée des résultats de la simulation est réalisée, en tenant compte des effets de paramètres variables tels que le nombre de Reynolds et le nombre de Prandtl. Suite à cela, un solve
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Zhao, Liqiang. "Liquid film flows over complex surfaces /." Access abstract and link to full text, 1991. http://0-wwwlib.umi.com.library.utulsa.edu/dissertations/fullcit/9123415.

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Solomenko, Zlatko. "Two-phase flows over complex surfaces : towards bridging the gap between computations and experiments with application to structured packings." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEC047/document.

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Ces travaux de thèse s'incrivent dans le cadre du traitement de gaz acides et captage CO2 dans les colonnes à garnissages structurés. Les gaz à traiter réagissent avec un liquide s'écoulant à contre-courant sur des plaques métalliques dont la compléxité géométrique permet d'accroître l'aire d'échange, et donc l'efficacité du procédé. Dans un contexte de modélisation multi-échelles des contacteurs à garnissages structurés, les écoulements gaz-liquide à la plus petite échelle géométrique des plaques de garnissages (de l'ordre de l'épaisseur du film liquide) sont étudiés, pour améliorer la compré
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Tsao, Jung-Chun, and 曹榮峻. "Applying MEMS Thermal Film Sensors Array and Liquid-crystal Flow Visualization Technique on Investigating Flow Reattachment over a Surface-mounted Rectangular Block." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/90022010211273672690.

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碩士<br>國立成功大學<br>航空太空工程學系碩博士班<br>94<br>Abstract Subject：Applying MEMS Thermal Film Sensors Array and Liquid-crystal Flow Visualization Technique on Investigating Flow Reattachment over a Surface-mounted Rectangular Block Student：Jung-Chun Tsao Advisor：J. J. Miau The purpose of this paper is to investigate the three-dimensional, unsteady behaviors of flow reattachment over a surface-mounted rectangular block, whose ratio of width versus height of the block is equal to 4. The cholesterol- type liquid-crystal mixed with toluene and oligomer (one kind of pol
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Capítulos de libros sobre el tema "Liquid film flow over complex surface"

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Sheardown, Lindsay, Emily Anne Hicks, and Heather Sheardown. "Anatomy and Physiology of the Eye." In Ophthalmic Biomaterials. Royal Society of Chemistry, 2025. https://doi.org/10.1039/9781839169779-00001.

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The eye has many complex structures that work together to process visual stimuli. The tear film, responsible for maintaining the homeostatic state of the ocular surface, protects and provides nutrients to the anterior segment. The cornea is a clear window through which a visual signal is received and grossly focused. Posterior to the cornea, the iris works alongside the ciliary body to adjust the aperture of the eye and change the shape of the lens, increasing or decreasing light for visual processing. Schlemm’s canal acts as a pathway for substances to flow into and out of the eye. The vitreo
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Actas de conferencias sobre el tema "Liquid film flow over complex surface"

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Dugstad, Arne, Rolf Nyborg, and Marion Seiersten. "Flow Assurance of pH Stabilized Wet Gas Pipelines." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03314.

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Abstract The pH-stabilization method is a cost effective and reliable way to control bottom of line corrosion in gas/condensate pipelines where glycol is used as hydrate preventer. Increasing the pH to 6.5-7.5 facilitates the formation of a protective iron carbonate film on the steel surface and reduces corrosion of the steel. pH stabilization will also affect top-of-line corrosion, but to a less extent than in the bottom of the line. In order to reduce top-of-the-line corrosion significantly, pH stabilized glycol must be transported from the liquid water/glycol phase in the bottom of the pipe
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Mros, Catherine, Kavic Rason, and Brad Kinsey. "Thin Film Superplastic Forming Model for Nanoscale Bulk Metallic Glass Forming." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68759.

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Geometrically complex, high aspect ratio microstructures have been successfully formed in Bulk Metallic Glass (BMG) via superplastic forming against silicon dies [1–3]. Although nanoscale features have been created in a similar fashion, there exists a demand to develop these metallic nanofeatures into high aspect ratio nanostructures with controlled geometries. In past research a process model was created to predict the achievable nanoscale feature sizes and aspect ratios through a flow model [4]. The flow model assumes force equilibrium with a viscous term to account for the required force to
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3

Lin, Linyu, Nam T. Dinh, Ram Sampath, and Nadir Akinci. "A Computational Study of Thin Film Dynamics on Micro-Structured Surfaces." In ASME 2016 Heat Transfer Summer Conference collocated with the ASME 2016 Fluids Engineering Division Summer Meeting and the ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ht2016-7382.

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The present study is motivated by interest in understanding of physical mechanisms that govern the effect of material and micro-structural characteristics of heat surface on boiling heat transfer and burnout at high heat fluxes. The effect was reported and investigated experimentally and analytically over several past decades. Only recently, with the advent of nanotechnology including microscale manufacturing, it becomes possible to perform high heat-flux boiling experiments with control of surface conditions. Of particular importance for practice is the potential for significant enhancement o
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Mros, Catherine, Kavic Rason, and Brad L. Kinsey. "Nanoscale Molding Model for Bulk Metallic Glass Features." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84136.

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Bulk Metallic Glass (BMG) has been molded against silicon dies to fabricate both microstructures and nanostructures. At the microscale, geometrically complex, high aspect ratio microfeatures have been developed into controlled geometries [1–4]. A demand exists to control the nanofeatures in a similar manner. In past research, a thin film model was presented to predict the pressure distribution across the BMG during the molding process when it is in the supercooled liquid state [5]. In this paper, a flow model is presented to predict the achievable nanoscale feature sizes and aspect ratios. Thi
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Zibart, Alexander, and Eugeny Y. Kenig. "FALLING LIQUID FILM FLOW OVER THE WAVY SURFACE OF VERTICAL PILLOW PLATES - A NUMERICAL INVESTIGATION." In International Heat Transfer Conference 16. Begellhouse, 2018. http://dx.doi.org/10.1615/ihtc16.mpf.024081.

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Тутанина, Екатерина Михайловна, Антон Викторович Степыкин, and Елена Александровна Тарлаковская. "HYDRODYNAMICS OF LIQUID LAMINAR FILM FLOW ALONG MESH PACKING." In Поколение будущего: сборник избранных статей Международной студенческой научной конференции (Санкт-Петербург, Май 2022). Crossref, 2022. http://dx.doi.org/10.37539/pb197.2022.48.34.008.

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В статье приводятся уравнения распределения скорости по поверхности сетчатого элемента, при стекании жидкости в ламинарном режиме. Преобразование формул происходит на основе принятых допущений. Произведён анализ полученных уравнений и даны рекомендации к дальнейшему использованию. The article presents the equations of the velocity distribution over the surface of the mesh element, when the liquid flows in the laminar mode. The transformation of formulas takes place on the basis of accepted assumptions. The obtained equations are analyzed and recommendations for further use are given.
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Karmakar, Avijit, and Sumanta Acharya. "Wettability Effects on Falling Film Heat Transfer Over Horizontal Tubes in Jet Flow Mode." In ASME 2019 Heat Transfer Summer Conference collocated with the ASME 2019 13th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ht2019-3532.

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Abstract The performance of a falling-film heat exchanger is strongly linked to the surface characteristics and the heat transfer processes that take place over the tubes. The primary aim of this numerical study is to characterize the influence of surface wettability of tubes on the falling film flow mode and its associated surface heat transfer. Surface wettability is generally characterized by the contact angle and, in this study, the wettability characteristics ranged from superhydrophilic to a superhydrophobic tube surface. The dynamic motion of the triple contact line connecting the solid
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Maxey, M. R., S. Dong, D. Liu, and J. Xu. "Simulation of Particulate Flows With the Force-Coupling Method (Keynote Paper)." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45713.

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One of the challenges in the numerical simulation of a system of particles in a fluid flow is to balance the need for an accurate representation of the flow around individual particles with the feasibility of simulating the fully-coupled dynamics of large numbers of particles. Over the past few years, several techniques have been developed for the direct numerical simulation of dispersed two-phase flows. Examples include the ALE-FEM formulation described by Hu et al. [1] and the DLM method of Patankar et al. [2]. The former uses a finite element mesh that conforms to the shape and position of
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Giroud-Garapon, S., G. Heid, G. Lavergne, and O. Simonin. "A Non-Invasive Liquid Film Thickness Measurement." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45563.

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Wall spray interactions play an important role in the combustion efficiency prediction of turbojet or ramjet. They generate complex physical phenomena such as rebound onto wall or rebound onto wetted surface, splashing, deposition, film formation, film streaming and film atomization. ONERA/DMAE has been working on these subjects for few years, and some wall-drop interaction models have been developed and integrated into CFD-industrial-codes. In order to improve this work, a basic experimental study has been performed to analyze wall liquid film inside a combustion chamber. This is a cold flow
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Chen, Ping-Hei, Pei-Pei Ding, Min-Sheng Hung, and Po-Chou Shih. "Film Cooling Over a Concave Surface Through a Row of Expanded Holes." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-033.

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This paper presents heat transfer coefficient and film cooling effectiveness measurements over a constant curvature concave surface. The coolant flow is ejected into the mainstream through a row of either simple holes or forward-expanded holes maintained at a streamwise injection angle (γ) of 35°. A transient liquid crystal thermography was employed to measure both the local heat transfer coefficient and film cooling effectiveness over the film-cooled concave test piece. With a pitch-to-diameter ratio (P/d) of 3, each forward-expanded injection hole has an expanded angle of 8° at the exit plan
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Informes sobre el tema "Liquid film flow over complex surface"

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Snyder, Victor A., Dani Or, Amos Hadas, and S. Assouline. Characterization of Post-Tillage Soil Fragmentation and Rejoining Affecting Soil Pore Space Evolution and Transport Properties. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7580670.bard.

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Tillage modifies soil structure, altering conditions for plant growth and transport processes through the soil. However, the resulting loose structure is unstable and susceptible to collapse due to aggregate fragmentation during wetting and drying cycles, and coalescense of moist aggregates by internal capillary forces and external compactive stresses. Presently, limited understanding of these complex processes often leads to consideration of the soil plow layer as a static porous medium. With the purpose of filling some of this knowledge gap, the objectives of this Project were to: 1) Identif
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