Relevant bibliographies by topics / Variable Permeability

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Variable Permeability'

Author: Grafiati
Published: 3 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Variable Permeability"

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Liu, Qi. "Study on Variable Permeability of Porous Carbon Graphite." Applied Mechanics and Materials 178-181 (May 2012): 441–45. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.441.

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To study the permeation mechanics during the impregnation of carbon graphite for mechanical applications, a permeation test with single-phase water saturated is conducted on carbon graphite porous medium, testing the permeability of the porous medium. The result of the test shows that the porosity of carbon graphite for mechanical applications is between 9.24% ~27.41% and the permeability of the samples is not a fixed value, averagely between 0.071mD and 9.953mD; and that the permeability of porous carbon graphite is resulted from the factors of pore structure properties of the porous medium,
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Rasburn, J., P. G. Mullarkey, K. E. Evans, A. Alderson, S. Ameer-Beg, and W. Perrie. "Auxetic structures for variable permeability systems." AIChE Journal 47, no. 11 (2001): 2623–26. http://dx.doi.org/10.1002/aic.690471125.

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Polehn, R. A., M. Keyhani, and M. Parang. "Transient compressible flow in variable permeability media." Journal of Thermophysics and Heat Transfer 8, no. 2 (1994): 378–81. http://dx.doi.org/10.2514/3.552.

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Jeng, D. S., and B. R. Seymour. "Wave-Induced Pore Pressure and Effective Stresses in a Porous Seabed With Variable Permeability." Journal of Offshore Mechanics and Arctic Engineering 119, no. 4 (1997): 226–33. http://dx.doi.org/10.1115/1.2829100.

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An evaluation of wave-induced soil response is particularly important for marine geotechnical engineers involved in the design of foundations for offshore structures. To simplify the mathematical procedure, most theories describing the wave-seabed interaction problem have assumed a porous seabed with uniform permeability, despite strong evidence of variable permeability. This paper presents an analytical solution for the wave-induced soil response in a porous seabed with variable permeability. Verification is available through a reduction to the simple case of uniform permeability. The results
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Zaytoon, M. S. Abu, and M. H. Hamdan. "Fluid Mechanics at the Interface between a Variable Viscosity Fluid Layer and a Variable Permeability Porous Medium." WSEAS TRANSACTIONS ON HEAT AND MASS TRANSFER 16 (September 28, 2021): 159–69. http://dx.doi.org/10.37394/232012.2021.16.19.

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Coupled parallel flow of fluid with pressure-dependent viscosity through an inclined channel underlain by a porous layer of variable permeability and variable thickness is initiated in this work. Conditions at the interface between the channel and the porous layer reflect continuity assumptions of velocity, shear stress, pressure and viscosity. Viscosity is assumed to vary in terms of a continuous pressure function that is valid throughout the channel and the porous layer. Model equations are cast in a form where the pressure as an independent variable and solutions are obtained to illustrate
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Abu Zaytoon, M. S., Yiyun (Lisa) Xiao, and M. H. Hamdan. "Flow of a Fluid with Pressure-Dependent Viscosity through Variable Permeability Porous Layer." WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS 16 (October 22, 2021): 204–12. http://dx.doi.org/10.37394/232011.2021.16.23.

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In this work, we consider flow of a fluid with pressure-dependent viscosity down an inclined porous plane with variable permeability that is incorporated in the pressure-dependent drag coefficient. We provide a solution to a recently developed flow model, and study the effects of flow and domain parameters (viscosity control parameter, permeability proportionality constant, and angle of inclination) on the flow characteristics. Suitability of a variable permeability model that considers permeability proportional to the flow velocity is investigated. Results show that large values of the permea
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Fu, Xiang, Xiang Fang Li, Shi Qing Cheng, Liang Huang, and Xiang Rong Nie. "Pressure Behavior of a Coupling Model with Variable Permeability Effect." Applied Mechanics and Materials 152-154 (January 2012): 364–68. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.364.

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It is indicated that the fluid flow does not abide by the Darcy law in certain low permeability reservoirs. The results of pressure date analysis in these low permeability reservoirs would be inaccurate when generalized using Darcy flow models. To improve analysis results, based on the concept of variable permeability effect, the dual non-Darcy coupling flow model is established in this paper. The iterative algorithm is adopted to solve the differential set of equations. This work also describes the pressure behaviors by pressure response curves.
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Fu, Xiang, Xiang Fang Li, Shi Qing Cheng, Liang Huang, and Xiang Rong Nie. "Pressure Behavior of a Coupling Model with Variable Permeability Effect." Applied Mechanics and Materials 152-154 (January 2012): 689–93. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.689.

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It is indicated that the fluid flow does not abide by the Darcy law in certain low permeability reservoirs. The results of pressure date analysis in these low permeability reservoirs would be inaccurate when generalized using Darcy flow models. To improve analysis results, based on the concept of variable permeability effect, the dual non-Darcy coupling flow model is established in this paper. The iterative algorithm is adopted to solve the differential set of equations. This work also describes the pressure behaviors by pressure response curves.
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Rosenberry, Donald O., José Manuel Nieto López, Richard M. T. Webb, and Sascha Müller. "Variable Seepage Meter Efficiency in High-Permeability Settings." Water 12, no. 11 (2020): 3267. http://dx.doi.org/10.3390/w12113267.

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The efficiency of seepage meters, long considered a fixed property associated with the meter design, is not constant in highly permeable sediments. Instead, efficiency varies substantially with seepage bag fullness, duration of bag attachment, depth of meter insertion into the sediments, and seepage velocity. Tests conducted in a seepage test tank filled with isotropic sand with a hydraulic conductivity of about 60 m/d indicate that seepage meter efficiency varies widely and decreases unpredictably when the volume of the seepage bag is greater than about 65 to 70 percent full or less than abou
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Zaytoon, M. S. Abu, T. L. Alderson, and M. H. Hamdan. "Flow through a Variable Permeability Brinkman Porous Core." Journal of Applied Mathematics and Physics 04, no. 04 (2016): 766–78. http://dx.doi.org/10.4236/jamp.2016.44087.

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Dissertations / Theses on the topic "Variable Permeability"

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Bari, Md Wasiul. "Modelling of ground improvement by vertical drains in highly variable soils." Thesis, Curtin University, 2012. http://hdl.handle.net/20.500.11937/2593.

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The research presented in this thesis focuses on the probabilistic modelling of soil consolidation via prefabricated vertical drains (PVDs) considering soil spatial variability. Soils are highly variable from one point to another in the ground and yet this is often coupled with inadequate site data, probabilistic analysis is a more rational approach to assess the behaviour of soil consolidation by PVDs. Although the fact that spatial variation of soil properties can affect soil consolidation has long been realized, the design of soil consolidation via PVDs has been traditionally carried out de
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Muthineni, Srinivas. "Two Dimensional Numerical Modelling Of Variably Saturated Flows." Thesis, Indian Institute of Science, 2000. https://etd.iisc.ac.in/handle/2005/255.

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The prediction of moisture and contaminant transport through unsaturated soil to ground water is becoming increasingly important in the fields of hydrology, agriculture and environmental engineering. Computer aided simulation techniques enables one to conduct a series of systematic numerical experiments to analyze flow phenomenon in subsurface hydrology under various physical and chemical processes. The flow movement depends upon medium characteristics, initial and boundary conditions, which reflect, physical processes occurring below the ground. To understand the effects of physical process a
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Muthineni, Srinivas. "Two Dimensional Numerical Modelling Of Variably Saturated Flows." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/255.

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The prediction of moisture and contaminant transport through unsaturated soil to ground water is becoming increasingly important in the fields of hydrology, agriculture and environmental engineering. Computer aided simulation techniques enables one to conduct a series of systematic numerical experiments to analyze flow phenomenon in subsurface hydrology under various physical and chemical processes. The flow movement depends upon medium characteristics, initial and boundary conditions, which reflect, physical processes occurring below the ground. To understand the effects of physical process a
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Dulaney, Nathaniel Frederick. "Quantifying Contributions to the Variance of Permeability and Porosity within the Western Belt Sandstones of the Cypress Formation, Illinois Basin." Wright State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wright1591107174920854.

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Ghose, Ritu Chaity. "Linking the Variance of Permeability and Porosity to Newly Interpreted Lithofacies at the Site of the Illinois Basin - Decatur Project, Decatur, Illinois." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1495815546209501.

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Chen, Wei. "Etude expérimentale de la perméabilité du béton sous conditions thermiques et hydriques variables." Phd thesis, Ecole Centrale de Lille, 2011. http://tel.archives-ouvertes.fr/tel-00778621.

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Cette thèse a permis d'étudier la perméabilité du béton sous conditions thermiques et hydriques variables, ainsi que l'effet de fissuration. Nombreux essais (mesures de saturation et perméabilité, essai de compressions uniaxiales et triaxiales et hydrostatiques) ont été menés afin d'évaluer l'influence de la température et de la saturation sur le comportement hydraulique du béton sain et microfissuré. En parallèle, un dispositif de mesure de la perméabilité sur béton macro fissuré permet d'étudier le comportement d'une macro-fissure de béton confinée et soumise à écoulement de gaz sec ou l'air
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BAJNI, GRETA. "STATISTICAL METHODS TO ASSESS ROCKFALL SUSCEPTIBILITY IN AN ALPINE ENVIRONMENT: A FOCUS ON CLIMATIC FORCING AND GEOMECHANICAL VARIABLES." Doctoral thesis, Università degli Studi di Milano, 2022. http://hdl.handle.net/2434/913511.

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The overarching goal of the doctoral thesis was thus the development of a systematic procedure capable to examine and enhance the role of geomechanical and climatic processes in rockfall susceptibility, performed with statistically based and Machine Learning techniques. To achieve this purpose, two case studies were analysed in the Italian Alps (Valchiavenna, Lombardy Region; Mountain Communities of Mont Cervin and Mont Emilius, Aosta Valley Region). For both case studies, Generalized Additive Models (GAM) were used for rockfall susceptibility assessment; for the Valchiavenna case study, a Ra
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Maňák, Jan. "Posouzení stávajících zkušebních postupů používaných při výrobě vibrolisovaného zboží s vazbou na reálné vlastnosti výrobků." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-239989.

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This master´s thesis is focused on assessment of properties of vibropressed concrete products. The important point of the thesis is measuring fresh concrete air permeability by Qaver control tool and confrontation this results with results of hardened concrete. The relationship between results obtained is examined.
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Szu-YinChen and 陳思穎. "Filling Analysis of VARTM with Variable Permeability due to Compression." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/71213522736523373664.

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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>101<br>Vacuum Assisted Resin Transfer Molding (VARTM) is a process by which resin is drawn by a vacuum pump through fiber preforms in a vacuum bag covered open mold. Although the approach to model the flow in VARTM is similar to the Resin Transfer Molding (RTM) process, modeling in VARTM has to consider the fiber compaction and the corresponding permeability change due to the variations of fiber and resin pressures during the filling process. The resin flow depends on the permeability of the preplaced fiber preform, which in turn depends on the fluid pressure. T
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Ferreira, Samuel Filipe Soares. "Electromagnetic study of a variable inductor controlled by a DC current." Master's thesis, 2016. http://hdl.handle.net/10316/40475.

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Dissertação de Mestrado Integrado em Engenharia Electrotécnica e de Computadores apresentada à Faculdade de Ciências e Tecnologia da Universidade de Coimbra<br>Energy efficiency regulations and the pursuit of more efficient power control systems increased the demand for research on Variable Inductor (VI), in the recent years. As the name indicates, a variable inductor is a device capable of varying its own inductance. This thesis presents a thorough electromagnetic analysis of the operation of double E-shaped Linear Variable Inductors (LVI). In the studied VI topology, a DC current is used to
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Books on the topic "Variable Permeability"

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Ly, Yvette. Electrically modulated variable permeability liquid-crystalline polymer. 1996.

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Book chapters on the topic "Variable Permeability"

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Lerche, Ian, and René O. Thomsen. "Effects Due to Variable Permeability." In Hydrodynamics of Oil and Gas. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4899-1301-2_8.

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Madhavi, M. V. D. N. S., Peri K. Kameswaran, and K. Hemalatha. "Effects of Thermal Stratification and Variable Permeability on Melting over a Vertical Plate." In Numerical Heat Transfer and Fluid Flow. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1903-7_29.

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Hartwig, Ueli A., Jan Trommler, Carina Weisbach, et al. "Is the Variable Oxygen Permeability in Nodules a Physical or a Physiological Phenomenon?" In Biological Fixation of Nitrogen for Ecology and Sustainable Agriculture. Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-59112-9_49.

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Xing, Rong, Junjie Zhang, and Honggang Lei. "Full-Permeability Analysis of Normal Amplitude and Variable Amplitude Fracture of M24 High Strength Bolts." In Advances in Frontier Research on Engineering Structures. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8657-4_12.

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AbstractFatigue problem on high strength bolts have already become more and more important in morden times and it is essential that we do research on bolt fatigue mechanism by the fatigue fracture analysis of the failed bolt because of fatigue. Through detailed analysis of constant amplitude stress and variable amplitude stress on M24 high strength large hexagonal head bolts, it is concluded that there are three common failure mode among all bolts’ fatigue failure. Fatigue failure characteristics and fracture developing status of source region, transient broken zone and extension zone were obt
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Wacker, Christian, Niklas Dierks, Illgen Joana, Arno Kwade, and Klaus Dröder. "Empirically Adapted Model for the Handling of Variable Geometries with Vacuum-Based Granulate Grippers." In Annals of Scientific Society for Assembly, Handling and Industrial Robotics 2022. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-10071-0_26.

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AbstractCurrent industrial trends show an increasing demand for individualized products, which require highly flexible yet automated production systems. Universal handling systems offer an efficient solution for the flexible and safe handling of differing component geometries and shapes. An innovative gripper for form-flexible handling combining vacuum systems with the flexibility of granulate grippers was established in previous research and has continued to prove its flexibility by gripping wide varieties of object geometries. The current challenge of modelling and predicting gripping forces
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Wan, Xiao-long, Yong-ling Zou, Juan Wang, and Wei-na Wang. "Application of Variable Weight Combination Model in Production Prediction of Ultra Low Permeability Horizontal Well Reservoir." In Proceedings of the International Field Exploration and Development Conference 2021. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2149-0_357.

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Larsen, Erik Hviid, and Jens Nørkær Sørensen. "Stationary and Nonstationary Ion and Water Flux Interactions in Kidney Proximal Tubule: Mathematical Analysis of Isosmotic Transport by a Minimalistic Model." In Reviews of Physiology, Biochemistry and Pharmacology. Springer International Publishing, 2019. http://dx.doi.org/10.1007/112_2019_16.

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AbstractOur mathematical model of epithelial transport (Larsen et al. Acta Physiol. 195:171–186, 2009) is extended by equations for currents and conductance of apical SGLT2. With independent variables of the physiological parameter space, the model reproduces intracellular solute concentrations, ion and water fluxes, and electrophysiology of proximal convoluted tubule. The following were shown: Water flux is given by active Na+ flux into lateral spaces, while osmolarity of absorbed fluid depends on osmotic permeability of apical membranes. Following aquaporin “knock-out,” water uptake is not r
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Miah, Mohammad Islam, and Mohammed Adnan Noor Abir. "Hybrid Connectionist Models to Investigate the Effects on Petrophysical Variables for Permeability Prediction." In Intelligent Computing & Optimization. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-93247-3_63.

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"variable-head permeability test." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_220153.

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Doveton, John H. "Permeability Estimation." In Principles of Mathematical Petrophysics. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199978045.003.0008.

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Because it is a measure of flow, permeability is a vector quantity, as contrasted with conventional petrophysical log data, which are responses to static properties of the rock. In the absence of a direct measurement of permeability, predictions must be inferred from the rock framework characteristics that control the ability of fluids to move through the rock. In this chapter, we consider methods that predict absolute permeability, that is, permeability with respect to a single fluid. This is the most widely used meaning of the term and would be immediately applicable to aquifers. In engineer
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Conference papers on the topic "Variable Permeability"

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Thompson, Neil G., Kurt M. Lawson, David R. Lankard, and Yash Paul Virmani. "Effect of Concrete Mix Components on Corrosion of Steel in Concrete." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96334.

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Abstract A major cause of concrete deterioration on bridge structures is the corrosion of the embedded steel reinforcement. In response to the continued problem of corrosion, FHWA initiated this research aimed at (1) quantifying the corrosive conditions fostering concrete bridge deterioration and (2) identifying concrete materials which consistently provide superior performance when used in bridge applications. The experimental phase of this research project was divided into three tasks: Corrosive Environments Studies, Concrete Chemical and Physical Properties, and Long-Term Corrosion Performa
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Samaniego-V., F., and H. Cinco-Ley. "Transient Pressure Analysis for Variable Rate Testing of Gas Wells." In Low Permeability Reservoirs Symposium. Society of Petroleum Engineers, 1991. http://dx.doi.org/10.2118/21831-ms.

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Zeng, F., and G. Zhao. "Well Testing Analysis for Variable Permeability Reservoirs." In Canadian International Petroleum Conference. Petroleum Society of Canada, 2004. http://dx.doi.org/10.2118/2004-037.

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CAPONE, F., M. GENTILE, and ANTONY A. HILL. "PENETRATIVE CONVECTION IN ANISOTROPIC POROUS MEDIA WITH VARIABLE PERMEABILITY." In Proceedings of the 15th Conference on WASCOM 2009. WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789814317429_0010.

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Fan, Kunkun, Renyuan Sun, Derek Elsworth, et al. "Radial Permeability Measurement for Shale Using Variable Pressure Gradients." In SPE Trinidad and Tobago Section Energy Resources Conference. Society of Petroleum Engineers, 2018. http://dx.doi.org/10.2118/191198-ms.

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Wang Feng_bo and Cao Zhao_lei. "Study on characteristics of concrete permeability under variable confined pressures." In 2011 International Conference on Electric Technology and Civil Engineering (ICETCE). IEEE, 2011. http://dx.doi.org/10.1109/icetce.2011.5774466.

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Robbins, B. A., D. V. Griffiths, and G. A. Fenton. "Influence of Spatially Variable Soil Permeability on Backward Erosion Piping." In Proceedings of the 7th International Symposium on Geotechnical Safety and Risk (ISGSR 2019). Research Publishing Services, 2019. http://dx.doi.org/10.3850/978-981-11-2725-0-bs2-cd.

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Heitor Reis, A., Cristina Gama, and Kambiz Vafai. "Use of sand beds of variable permeability in beach profile engineering." In POROUS MEDIA AND ITS APPLICATIONS IN SCIENCE, ENGINEERING, AND INDUSTRY: 3rd International Conference. AIP, 2010. http://dx.doi.org/10.1063/1.3453816.

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Alexandris, A. P. "LEAKAGE ERRORS IN VARIABLE HEAD PERMEABILITY TESTS PERFORMED IN CASED BOREHOLES." In GEO-EXPO. Društvo za geotehniku u Bosni i Hercegovini, 2017. http://dx.doi.org/10.35123/geo-expo_2017_25.

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Wilke, Kyle L., Karina B. Kalinina, Yangying Zhu, et al. "ENHANCEMENT OF DRY-OUT HEAT FLUX IN NONUNIFORM VARIABLE-PERMEABILITY WICKING STRUCTURES." In International Heat Transfer Conference 16. Begellhouse, 2018. http://dx.doi.org/10.1615/ihtc16.bae.024136.

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Reports on the topic "Variable Permeability"

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Russo, David, Daniel M. Tartakovsky, and Shlomo P. Neuman. Development of Predictive Tools for Contaminant Transport through Variably-Saturated Heterogeneous Composite Porous Formations. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7592658.bard.

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The vadose (unsaturated) zone forms a major hydrologic link between the ground surface and underlying aquifers. To understand properly its role in protecting groundwater from near surface sources of contamination, one must be able to analyze quantitatively water flow and contaminant transport in variably saturated subsurface environments that are highly heterogeneous, often consisting of multiple geologic units and/or high and/or low permeability inclusions. The specific objectives of this research were: (i) to develop efficient and accurate tools for probabilistic delineation of dominant geol
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Brydie, Dr James, Dr Alireza Jafari, and Stephanie Trottier. PR-487-143727-R01 Modelling and Simulation of Subsurface Fluid Migration from Small Pipeline Leaks. Pipeline Research Council International, Inc. (PRCI), 2017. http://dx.doi.org/10.55274/r0011025.

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The dispersion and migration behavior of hydrocarbon products leaking at low rates (i.e. 1bbl/day and 10 bbl/day) from a pipeline have been studied using a combination of experimental leakage tests and numerical simulations. The focus of this study was to determine the influence of subsurface engineered boundaries associated with the trench walls, and the presence of a water table, upon the leakage behavior of a range of hydrocarbon products. The project numerically modelled three products including diesel, diluted bitumen (dilbit) and gasoline; which were chosen to span a range of fluid types
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