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Wednesday, April 15, 2020 | History

3 edition of A mechanistic theory for drying of porous media found in the catalog.

A mechanistic theory for drying of porous media

R. W. Lyczkowski

A mechanistic theory for drying of porous media

  • 374 Want to read
  • 32 Currently reading

Published by Dept. of Energy], for sale by the National Technical Information Service in [Washington, Springfield, Va .
Written in English

    Subjects:
  • Coal -- Drying -- Mathematical models,
  • Coal gasification, Underground -- Mathematical models

  • Edition Notes

    StatementRobert W. Lyczkowski
    SeriesUCRL ; 52456
    ContributionsLawrence Livermore Laboratory, United States. Dept. of Energy
    The Physical Object
    Paginationiii, 26 p. :
    Number of Pages26
    ID Numbers
    Open LibraryOL14885051M

      This book examines the relationship between transport properties and pore structure of porous material. Models of pore structure are presented with a discussion of how such models can be used to predict the transport properties of porous media/5.   Dynamics of Fluids in Porous Media book. Read 2 reviews from the world's largest community for readers. This classic work by one of the world's foremost /5.   Vapor phase transport in porous media is important in a number of environmental and industrial processes: soil moisture transport, vapor phase transport in the vadose zone, transport in the vicinity of buried nuclear waste, and industrial processes such as drying. The diffusion of water vapor in a packed bed containing residual liquid is examined by: 5. The physics of partially saturated porous media: residual saturation and seismic wave propagation, Li, X., Zhong, L. and L. J. Pyrak-Nolte, Annual Reviews of Earth and Planetary Sciences, Vol


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A mechanistic theory for drying of porous media by R. W. Lyczkowski Download PDF EPUB FB2

Mechanistic understanding of microwave-vacuum drying of non-deformable porous media Article (PDF Available) in Drying Technology February with 76 Reads How we measure 'reads'. Drying of porous media is part of our daily experience, yet this common process is central to many environmental and engineering applications ranging from soil evaporation affecting hydrological water balance and climatic processes, to the drying of food and building materials, and driving plant life through by: 5.

Examples of industrial porous media and corresponding processes are drying of paper pulp, the adsorption of liquids in diapers and similar absorbing products, gas and water management in fuel cells, and the drying of foods, as well as water and solute movement in building materials, detergent tablets, textiles, foams, coatings, paper, and filters.

The theory of drying process in two stages for porous materials with high moisture A mechanistic theory for drying of porous media book seems to be a good starting point to explore further the drying of GBs at different scales and.

The Theory and Applications of Transport in Porous Media book series is aimed at engineers and scientists who work and perform research in a wide variety of disciplines involving transport of matter and energy in porous media.

Examples of industrial porous media and corresponding processes are drying of paper pulp, the adsorption of liquids. Drying of porous media: an introduction I. Borsi Short notes on porous media Heat and mass transfer in porous media Possible simpli cations Generalization: shrinkage The isothermal case References Drying of porous media: an A mechanistic theory for drying of porous media book I.

Borsi (Joint work with A. Fasano) Dipartimento di Matematica U. Dini, Universit a di Firenze (Italy). The following mechanistic model of drying (Kowalski, ; Kowalski and Rybicki, ) has been used to determine the drying-induced stresses.

The model was developed on the basis of interacting continua theory, incorporating the following assumptions: • The drying material is a saturated porous medium consisted of three constituents: solid Cited by: Drying of Porous Media.

The Case of Cotton Fabrics. Anno Accademico / a Silvia. a Abstract The focus of this PhD thesis is on clothes drying in home laundry, an energy-intensive operation of high societal impact due the high associated costs and carbon.

A porous medium or a porous material is a material containing pores (voids). The skeletal portion of the material is often called the "matrix" or "frame". The pores are typically filled with a fluid (liquid or gas).The skeletal material is usually a solid, but structures like foams are often also usefully analyzed using concept of porous media.

A porous medium is most often characterised by. Purchase Porous Media Fluid Transport and Pore Structure - 1st Edition. Print Book & E-Book. ISBNVI. Porous Media Lecture Transport in Porous Media 4/29/ (corrected 5/4/12 MZB) Notes by MIT Student. Conduction.

In the previous lecture, we considered conduction of electricity (or heat conduction or mass diffusion) in a composite medium, where each component has a nonzero conductivity.

In aFile Size: 1MB. Keywords: porous media, drying, liquid films, diffusion, invasion percolation Introduction The drying of porous media is a displacement process, in which the liquid phase in the pore space recedes as a result of evaporation.

A typical geometry in an isothermal drying appli-cation is shown in Figure 1. Drying is driven by the injection. Dynamics of Drying in 3D Porous Media Lei Xu,1 Simon Davies,2 Andrew B. Schofield,3 and David A. Weitz1 1HSEAS and Department of Physics, Harvard University, Cambridge, MassachusettsUSA 2ICI Strategic Technology Group, R Wilton Centre, Redcar TSRF, United Kingdom 3The School of Physics, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.

Theory of Finite Deformations of Porous Solids M. BIOT Communicated by G. TEMPLE 1. Introduction. The linear mechanics of fluid-saturated porous media as developed by the author was reviewed and discussed in detail in two earlier papers [l], [2].

In its final form it is based on the linear thermodynamics of irreversible processes. Book Description. Handbook of Porous Media, Third Edition offers a comprehensive overview of the latest theories on flow, transport, and heat-exchange processes in porous media.

It also details sophisticated porous media models which can be used to improve the accuracy of modeling in a variety of practical applications.

SECTIONVI GeologicalApplicationsin Porous Media Chapter 22 Digital Petrophysics: Imaging,Modeling, and ExperimentalChallenges Relatedto PorousMediainOilFields File Size: KB. Theory of dynamic permeability and tortuosity in fluid-saturated porous media - Volume - David Linton Johnson, Joel Koplik, Roger Dashen Skip to main content Accessibility help We use cookies to distinguish you from other users and to provide you with a better experience on our by: with that predicted by White’s theory.

Acoustics in Porous Media. – p. Extensions of Biot theory. A porous medium saturated by immiscible fluids. The theory wa s presented by Santos et al. Acoust. Soc. Am., a, b). In these type of media, three compressional waves (P1,P2,P3 waves)File Size: 2MB. In fluid mechanics, fluid flow through porous media is the manner in which fluids behave when flowing through a porous medium, for example sponge or wood, or when filtering water using sand or another porous material.

As commonly observed, some fluid flows through the media while some mass of the fluid is stored in the pores present in the media. porous media.g In the present treatment the new features of the theory are developed in more detail and further generalized by the introduction of a “visco- dynamic operator.” This provides an exact procedure for the evaluation of the dynamic properties of the fluid in its motion relative to the solid.

An emerging theme in reactive transport in porous media is non-classical behavior, empirical observations that cannot be explained by traditional models or theories. Recent work provides several illustrations of such behavior, involving advection with dispersion, interphase mass transfer and multicomponent chemical by: Drying In Porous Media: Equilibrium And Non-Equilibrium Approaches For Composting Processes demonstrate the ability of the model to well describe the compositional drying of a partial water-saturated porous media and point out the importance of drying in the control of organic matter biodegradation.

Therefore, drying phenomena must be taken. Freeze-drying is an extreme form of vacuum drying in which the water or other solvent is frozen and drying takes place by subliming the solid phase. Freeze-drying is extensively used in two situations: (1) when high rates of decomposition occur during normal drying; and (2) with substances that can be dried at higher temperatures, and that are.

From the reviews of the first edition: "The purpose of this book is to present the state-of-the-art trends in various fields of the theory of porous media.

this book provides a solid fundamental and comprehensive presentation of the mathematical theory pointing out Cited by: This book examines the relationship between transport properties and pore structure of porous material. Models of pore structure are presented with a discussion of how such models can be used to predict the transport properties of porous by: A mechanistic phenomenological model for drying of porous media is established for a single representative pore by applying two-fluid, two-phase flow theory.

The model rationally extends classical drying theory to handle rapid drying of moist solids where bulk motion of vapor and liquid water occurs within the drying matrix. Heat and mass transfer in porous media; Structure of porous media; Deletion of nondominant effects in modelling transport in porous media; Hydrocarbons in porous media; Fluid flow in fractured rock: theory and application; Transport phenomena in frozen porous media; Phosphorus transport with water flow in acid, sandy soils; Thermohydraulics of heated porous media associated with nuclear.

The theory of drying process in two stages for porous materials with high moisture content seems to be a good starting point to explore further the drying of GBs at different scales and mechanistic and correlative models of evaporation are available to analyze the desiccation in different stages of the elaboration process, which is also of Author: Carlos Inocencio Cortés-Martínez, Jaime Ruiz-Vega, GabinoAlberto Martínez-Gutiérrez.

Impact of spatially correlated pore-scale heterogeneity on drying porous media Oshri Borgman,1Paolo Fantinel,2Wieland Luhder,¨ 2Lucas Goehring, and Ran Holtzman1 1Department of Soil and Water Sciences, The Hebrew University of Jerusalem, RehovotIsrael 2Max Planck Institute for Dynamics and Self-Organization (MPIDS), G¨ottingen, GermanyAuthor: Oshri Borgman, Paolo Fantinel, Wieland Lühder, Lucas Goehring, Ran Holtzman.

This classic work by one of the world's foremost hydrologists presents a topic encountered in the many fields of science and engineering where flow through porous media plays a fundamental role. It is the standard work in the field, designed primarily for advanced undergraduate and graduate students of ground water hydrology, soil mechanics, soil physics, drainage and irrigation engineering.

Porous materials in nature and industry • porous materials: sand stone, porous rock, filter paper, nano tubes • main feature: cavities in a solid matrix • cavities can be partly or fully connected • accessible for probe molecules • porosities are often desired and of importance in medicine.

A film-straining theory is introduced, which proposes that transport of suspended colloids can be retarded due to physical restrictions imposed by thin water films in partially saturated porous media.

A quantitative, mechanistic model is provided to predict the film-straining efficiency. In this model, the concepts of “critical matric potential” and “critical saturation” are introduced.

A numerical study on drying of porous media Nima Amanifard and Akbar Khodaparast Haghi† The University of Guilan, Faculty of Eng., P.

BoxRasht, Iran (Received 13 March • accepted 5 July ) Abstract−In this study, two-dimensional conjugate heat and mass transfer in porous body and drying air during the. Accurate prediction is difficult, however, because foam mobility depends in a complex way on bubble size, or foam texture, 5,6 and texture itself depends on many factors.

7 Of these factors by far the most important is capillary pressure P c, the difference between gas- and water-phase pressures in the porous medium. (For simplicity here, we. Two-dimensional flow through porous media Joe Millard Bunn Iowa State University Follow this and additional works at: Part of theAgriculture Commons, and theBioresource and Agricultural Engineering Commons.

Handbook of Porous Media, Third Edition offers a comprehensive overview of the latest theories on flow, transport, and heat-exchange processes in porous media. It also details sophisticated porous media models which can be used to improve the accuracy of 4/5(1).

FLUID FLOW IN POROUS MEDIA by Zoltán E. HEINEMANN Professor for Reservoir Engineering Leoben, October actualized by Dr. Georg Mittermeir Tehran, February Roseggerstr.

11a | Leoben | Austria | Phone: +43 (0)/ | E-Mail: [email protected] IBAN: AT78 | BIC: BKAUATWWCited by: uids in porous media, very few studies can be found on this subject.

Moreover, the results, which are reported only for very simple cases of porous media, cannot be fully assessed. As a result, network modeling seems to be the most viable candidate for modeling yield-stress uids in porous media. However, the research in this eld is limited,Cited by: Purchase Transport Phenomena in Porous Media III - 1st Edition.

Print Book & E-Book. ISBNA porous medium is a solid with voids distributed more or less uniformly throughout the bulk of the body. The basic characteristic of this medium is porosity. The bulk porosity Π of a material is defined as the ratio of void volume V v to body volume V 0, Π = V v /V the remaining portion V s of the total volume of the material is in the form of a solid "skeleton", then.

Title: Nonwovens: Theory, Process, Performance, and Testing TAPPI PRESS Nonwovens: Theory, Process, Performance, and Testing Edited by Albin F.

Turbak Prepared for the Nonwovens Division pp., /2" x 11" hard cover. Item Number: R ISBN: Xformer professor and director of applied research at the Southern.The drying dynamics in three dimensional porous media are studied with confocal microscopy.

We observe abrupt air invasions in size from single particle to hundreds of particles. We show that these result from the strong flow from menisci in large pores to menisci in small pores during drying.Numerical Simulation of Slow Drying in Porous Media Using Pore Network Model Zhenyu Xu University of Wisconsin-Milwaukee Follow this and additional works at: Part of theEngineering Commons This Dissertation is brought to you for free and open access by UWM Digital by: 1.