Porous media

In ebook "Nanoparticles in the water cycle: Properties, analysis and environmental relevance" the first section deals with basic aspects of nanoparticles and their function in air, water, soil and water treatment. The second part contains examples for the application of advanced instrumentation for quantification and characterisation of nanoparticles with special respect to aqueous samples.

243p giangdongdinh 28-05-2024 1 1   Download

A theoretical study of sound transmission loss across a simply supported double-composite sandwich plate filled with poroplastic material is formulated. Biot's theory is employed to describe wave propagation in elastic porous media. The two face composite plates are modeled as classical thin plates. By using the modal superposition theory, a double series solution for the sound transmission loss of the structure is obtained with the help of the Galerkin method.

10p dathienlang1012 03-05-2024 0 0   Download

Lecture Reservoir engineering - Chapter 6: Fluid flow in porous media. This chapter provides students with content about: primary reservoir characteristics; flow regimes; reservoir geometry; fluid flow in porous media;... Please refer to the detailed content of the lecture!

71p mothuahoa 04-05-2024 2 0   Download

Part 2 book "Chemical engineering fluid mechanics" includes content: Flow measurement, safety relief and control valves, external flows, fluid–solid separations by free settling, flow in porous media, two phase flow, fluidization and sedimentation.

289p muasambanhan10 11-04-2024 2 1   Download

Ebook "Principles of soft-matter dynamics: Basic theories, non-invasive methods, mesoscopic aspects" covers fundamental dynamic phenomena such as diffusion, relaxation, fluid dynamics, normal modes, order fluctuations, adsorption and wetting processes. It also elucidates the applications of the principles and of the methods referring to polymers, liquid crystals and other mesophases, membranes, amphiphilic systems, networks, and porous media including multiphase and multi-component materials, colloids, fine-particles, and emulsions.

670p coduathanh1122 27-03-2024 3 1   Download

Ebook "Organic chemistry in confining media" principally widens our consideration of organic reactivity in confining media. Topics discussed include: effects of micellization, porous effects, effects of solvent cages, complexation to organometallic compounds, hydrogen-bond or charge-transfer complexation, sorption effects, effects of solvents, and stereochemical changes upon confinement.

196p coduathanh1122 27-03-2024 5 1   Download

Part 2 book "Chemical engineering fluid mechanics" includes content: Compressible flows, flow measurement and control, external flows, fluid–solid separations by free settling, flow in porous media, fluidization and sedimentation, two phase flow.

294p muasambanhan08 01-03-2024 5 1   Download

Ebook "Soil mechanics and transport in porous media (Theory and applications of transport in porous media, Volume 19)" contains an overview of the most relevant scientific contributions of Gerard de Josselin de Jong to the development of both Soil Mechanics and Transport in Porous Media. The volume comprises a selection of papers by de Josselin de Jong as they were published in the international scientific literature. In addition, some unpublished, but highly relevant work has been included.

375p duongthandue0501 28-02-2024 3 1   Download

The result show that taking into account the coupling between the deformation of the porous space and the capillary effects can radically modify the prediction of the temperature influence on the capillary curve.

12p vijeff 30-11-2023 10 4   Download

Ebook "Modelling water flow in unsaturated porous media: Accounting for nonlinear permeability and material heterogeneity" focuses on two issues related to mathematical and numerical modelling of flow in unsaturated porous media. In the first part numerical solution of the governing equations is discussed, with particular emphasis on the spatial discretization of highly nonlinear permeability coefficient. The second part deals with large scale flow in heterogeneous porous media of binary structure.

254p loivantrinh 29-10-2023 5 2   Download

The drying process plays an important role in various industries such as chemical engineering, food, agriculture, and construction. The drying process is a complex one due to the phenomena of heat and mass transfer, which take place simultaneously. In principle, these transport processes can be modelling using continuous and discrete approaches.

6p vicedric 08-02-2023 4 1   Download

In this study, we develop a model for permeability for porous media using an upscaling technique. For this, we conceptualize a porous medium as a bundle of capillary tubes with the similarly skewed pore size distribution. The proposed model is related to microstructural properties such as maximum radius, porosity, tortuosity and a characteristic constant of porous media.

7p vimalfoy 08-02-2023 3 2   Download

Downstream processing (DSP) of large bionanoparticles is still a challenge. The present study aims to systematically compare some of the most commonly used DSP strategies for capture and purification of enveloped viruses and virus-like particles (eVLPs) by using the same staring material and analytical tools.

11p viginny 23-12-2022 9 3   Download

The proposed model is related to the electrical conductivity of the pore fluid, the specific electrical conductance and the microstructural parameters of a porous medium. The model predictions are successfully compared with published experimental data as well as another model available in literature. The model opens up new possibilities for prediction of the electrical conductivity of porous materials.

9p meyerowitz 25-12-2021 18 0   Download

n this work, some popular analytic formulas such as Maxwell (MA), Mori-Tanaka approximation (MTA), and a recent method, named the Polarization approximation (PA) will be applied to estimate the elastic moduli for some porous media. These approximations are simple and robust but can be lack reliability in many cases. The Hashin-Shtrikman (H-S) bounds do not supply an exact value but a range that has been admitted by researchers in material science. Meanwhile, the effective properties by unit cell method using the finite element method (FEM) are considered accurate.

12p chauchaungayxua12 09-07-2021 9 1   Download

This study is devoted to the development and validation of a numerical tool based on the use of the finite element method.

10p nguaconbaynhay11 07-04-2021 15 4   Download

n this paper, we carry out the homogenization of a very rough threedimensional interface separating two dissimilar generally anisotropic poroelastic solids modeled by the Biot theory. The very rough interface is assumed to be a cylindrical surface that rapidly oscillates between two parallel planes, and the motion is time-harmonic. Using the homogenization method with the matrix formulation of the poroelasicity theory, the explicit homogenized equations have been derived.

14p nguaconbaynhay11 07-04-2021 20 1   Download

Morphologically controlled synthesis of ferric oxide nano/micro particles has been carried out by using solvothermal route. Structural characterization displays that the predominant morphologies are porous hollow spheres, microspheres, micro rectangular platelets, octahedral and irregular shaped particles.

14p vijiraiya2711 27-05-2020 17 2   Download

The modeling and numerical simulation of mass transport in porous media is discussed in this work by using the so-called pore size distribution for computing transport properties. The pore-size distribution is a property of the pore structure of a porous medium. This can be used to estimate the different transport properties, amongst other, the permeability. By starting with a formula for the absolute permeability, the simulation of water and oil transport in reservoirs is considered by solving mass conservation equations with the help of the control volume method.

7p abcxyz123_02 03-03-2020 13 0   Download

One of the most important components of pot cultivation of flower crops is the choice of growing medium. It should be well aerated medium with good water retention capacity and good drainage. And ideal growing medium needs to be able to anchor the roots and stems so that the plant will not topple over as it grows larger, yet it should provide adequate moisture, nutrient and aeration to the plant. The cost, local availability and experience in substrate are usually the determining factors for choosing a particular substrate type.

6p chauchaungayxua1 04-12-2019 12 1   Download