Results 71 to 80 of about 68,920 (314)

A Non-Linear Flow Model for Porous Media Based on Conformable Derivative Approach

open access: yesEnergies, 2018
Prediction of the non-linear flow in porous media is still a major scientific and engineering challenge, despite major technological advances in both theoretical and computational thermodynamics in the past two decades.
Gang Lei, Nai Cao, Di Liu, Huijie Wang
doaj   +1 more source

Simulating fluid flow in complex porous materials by integrating the governing equations with deep-layered machines

open access: yesnpj Computational Materials, 2021
Fluid flow in heterogeneous porous media arises in many systems, from biological tissues to composite materials, soil, wood, and paper. With advances in instrumentations, high-resolution images of porous media can be obtained and used directly in the ...
Serveh Kamrava   +2 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Physics of Porous Media

open access: yes, 2020
The physics of porous media is, when taking a broad view, the physics of multinary mixtures of immiscible solid and fluid constituents. Its relevance to society echoes in numerous engineering disciplines such as chemical engineering, soil mechanics ...

core   +2 more sources

Shape optimization using the adjoint solver in computational fluid dynamics for additive manufacturing of a pollen filter

open access: yesAIP Advances
Pollen filters play an essential role in protecting people from airborne allergens and ensuring indoor air quality. Allergic reactions to pollen can lead to discomfort, reduced productivity, and increased healthcare costs.
N. Jüngling, J. Pospichl, J. Niessner
doaj   +1 more source

Lattice Boltzmann Model for Gas Flow through Tight Porous Media with Multiple Mechanisms

open access: yesEntropy, 2019
In the development of tight gas reservoirs, gas flow through porous media usually takes place deep underground with multiple mechanisms, including gas slippage and stress sensitivity of permeability and porosity.
Junjie Ren   +3 more
doaj   +1 more source

Convection in fluid and porous media [PDF]

open access: yes, 2003
The subject of convection in fluid and porous media is investigated. Particular attention is paid to penetrative convection. The first two chapters are devoted to penetrative convection when fluid overlies and saturates a porous medium.
Carr, Magda
core  

Generalized Lagrangian Coordinates for Transport and Two-Phase Flows in Heterogeneous Anisotropic Porous Media [PDF]

open access: yes, 2001
We show how Lagrangian coordinates provide an effective representation of how difficult non-linear, hyperbolic transport problems in porous media can be dealt with. Recalling Lagrangian description first, we then derive some basic but remarkable properties
Plouraboué, Franck   +2 more
core   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

open access: yesAdvanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies   +2 more
wiley   +1 more source

The transport behaviour of elemental mercury DNAPL in saturated porous media: Analysis of field observations and two-phase flow modelling

open access: yes, 2014
Mercury is a contaminant of global concern. The use of elemental mercury in various (former) industrial processes, such as chlorine production at chlor-alkali plants, is known to have resulted in soil and groundwater contaminations worldwide.
Hydrogeology   +5 more
core   +1 more source

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