AbstractConnectivity and connectedness are nonadditive geometric functionals on the set of pore scale structures. They determine transport of mass, volume or momentum in porous media, because without connectivity there cannot be transport. Percolativity of porous media is introduced here as a geometric descriptor of connectivity, that can be computed ...
Hilfer, Rudolf, Hauskrecht, J.
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Porous materials in building energy technologies—a review of the applications, modelling and experiments [PDF]
Improving energy efficiency in buildings is central to achieving the goals set by Paris agreement in 2015, as it reduces the energy consumption and consequently the emission of greenhouse gases without jeopardising human comfort.
Esfahani, Javad Abolfazli +2 more
core +1 more source
The Influence of Micro-Fractures on the Flow in Tight Oil Reservoirs Based on Pore-Network Models
In this paper, the influence of micro-fractures on the flow of tight reservoirs is studied on the microscopic scale. Three-dimensional digital cores of fractured tight sandstone with varying fracture apertures, lengths, and dip angles are constructed ...
Hai Sun +8 more
doaj +1 more source
On the hydrodynamics and heat convection of an impinging external flow upon a cylinder with transpiration and embedded in a porous medium [PDF]
This paper extends the existing studies of heat convection by an external flow impinging upon a flat porous insert to that on a circular cylinder inside a porous medium.
Alizadeh, Ahmed +3 more
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Analysis of Thermal Performances in a Ventilated Room Using LBM-MRT: Effect of a Porous Separation
This article demonstrates the feasibility of porous separation on the performance of displacement ventilation in a rectangular enclosure. A jet of fresh air enters the cavity through an opening at the bottom of the left wall and exits through an opening ...
Zouhira Hireche +4 more
doaj +1 more source
Adjoint-based topology optimization of filter structures for gas–particle systems
Conventional filters for aerosol particle deposition consist of one or more filter layers, which are either woven or composed of tangled fibers. The quality of the separation results almost exclusively from the density of the fiber arrangement.
N. Jüngling, J. Niessner
doaj +1 more source
Chaotic Advection at the Pore Scale: Mechanisms, Upscaling and Implications for Macroscopic Transport [PDF]
The macroscopic spreading and mixing of solute plumes in saturated porous media is ultimately controlled by processes operating at the pore scale. Whilst the conventional picture of pore-scale mechanical dispersion and molecular diffusion leading to ...
Lester, D. R. +2 more
core +2 more sources
Innovative heat pipes and thermosyphons for renewable sources of energy application
In the paper the authors present possibilities of use two-phase heat-conducting devices at cooling technologies for PV and PV/T solar cooling and air-conditioning. Three ways to improve heat conductive properties of heat pipes and thermosyphons with help
Vasiliev Leonard, Zhuravlyov Alexander
doaj +1 more source
An accurate and comprehensive understanding of shale pore structure is fundamental and critical for accurate reserves evaluation and efficient hydrocarbon development.
Jun Yao +4 more
doaj +1 more source
A two-pressure model for slightly compressible single phase flow in bi-structured porous media [PDF]
Problems involving flow in porous media are ubiquitous in many natural and engineered systems. Mathematical modeling of such systems often relies on homogenization of pore-scale equations and macroscale continuum descriptions.
Davit, Yohan +2 more
core +5 more sources

