Results 11 to 20 of about 76,766 (266)
TRANSFERS IN POROUS MEDIA [PDF]
Modelling heat transfer in porous media requires to take into account multiple-scale aspects inherent to porous media structures. Several methodologies have been developed to upscale the equations at a lower-scale and to obtain upper-scale models as it is outlined in a brief review based on a simple heat conduction example proposed in the first part of
openaire +4 more sources
We address the surface tension-driven dynamics of porous media in nearly saturated pore-space solutions. We linearize this dynamics in the reaction-limited regime near its fixed points -- surfaces of constant mean curvature (CMC surfaces). We prove that the only stable interface for this dynamics is the plane, and estimate the time scale for a CMC ...
Davidovitch, Benny +2 more
openaire +3 more sources
Direct Visualization of Nanoscale Salt Precipitation and Dissolution Dynamics during CO2 Injection
CO2 injection to enhance shale oil recovery provides a win-win solution to meet the global fuel shortage and realize ultimate carbon neutrality. When shale reservoirs contain high salinity water, CO2 injection can result in salt precipitation to block ...
Xinling Hu +10 more
doaj +1 more source
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 transpiration.
Shokri, Nima +3 more
openaire +4 more sources
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.
openaire +3 more sources
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
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
Infiltration through porous media [PDF]
13 pages, 12 figures, Revtex 2-column ...
Hwang, W., Redner, S.
openaire +3 more sources
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
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

