Results 31 to 40 of about 6,434,350 (295)

Effective thermal conductivity model of porous polycrystalline UO2: A computational approach

Nuclear Engineering and Technology, 2022
The thermal conductivity of uranium oxide (UO2) containing pores and grain boundaries is investigated using continuum-level simulations based on the finite-difference method in two and three dimensions.
Bohyun Yoon, Kunok Chang
doaj   +1 more source

Effective conductivity of conduit networks with random conductivities

Physical Review E
The effective conductivity ($T^{eff}$) of 2D and 3D Random Resistor Networks (RRNs) with random edge conductivity are studied. The combined influence of geometrical disorder, which controls the overall connectivity of the medium, and leads to percolation effects, and conductivity randomness is investigated.
Iván Colecchio, Elora Le Gall, Benoît Noetinger   +2 more
openaire   +4 more sources

Effective conductivity of a class of multicomponent heterogeneous materials by digital image analysis

, 2022
Roy, R. ValéryWe develop computer vision techniques to calculate the effective (electrical or thermal) conductivity of multicomponent heterogeneous materials based on information collected from digital images of their microstructure.
Alnaghmoush, Abdulaziz M.
core   +1 more source

Embroidered Transmission Lines with Conductive Yarns: Challenges, Modeling, Fabrication, and Experimental Performance Assessment

Sensors
This paper presents an enhanced measurement technique for evaluating embroidered transmission lines (TLs), based on a TL characterization method. The evaluation metric is the “pure” losses of the embroidered TL excluding mismatch losses.
Chrysanthi Angelaki, Aris Tsolis, Sofia Bakogianni, Antonis A. Alexandridis   +3 more
doaj   +1 more source

Effective medium approximation for conductivity of coated-inclusion composites with anisotropic coating

Vietnam Journal of Mechanics, 2019
Effective medium approximations are constructed in this paper to estimate the macroscopic conductivity of coated-inclusion composites with thin anisotropic coating.
Tran Bao Viet, Nguyen Thi Huong Giang, Pham Duc Chinh   +2 more
doaj   +1 more source

Numerical Assessment of Elliptical Pore Orientation and Eccentricity Effects on Charge Transport in Anisotropic Functional Membranes

Membranes
The transport efficiency of anisotropic functional membranes is largely dictated by the geometry and orientation of their internal pores. In this study, a numerical finite-volume framework was developed to evaluate how elliptical pore eccentricity (εcc ...
Carlos Pacheco, Alfonso Navarro, Enrique Escobedo, Romeli Barbosa   +3 more
doaj   +1 more source

Effective conductivity of 2D disk – ring composite material

Mathematical Modelling and Analysis, 2013
For 2D bounded composite material geometrically composed by a disk of variable radius r and an outer ring it is determined in an analytic form the x-component of the effective conductivity tensor.
Serhii Gryshchuk, Sergei Rogosin
doaj   +1 more source

Effective thermal conductivity of an intact heterogeneous limestone

Journal of Rock Mechanics and Geotechnical Engineering, 2020
The Cobourg limestone is a very low porosity rock consisting of lighter nodular regions that are predominantly calcite and darker regions consisting of calcite, quartz, dolomite, and an appreciable clay fraction.
A.P.S. Selvadurai, S.M. Rezaei Niya
doaj   +1 more source

A Geometry-Driven Modeling Framework for Matrix–Filler Interactions Governing Dielectric Response and Electrical Conductivity in Composite Materials

IEEE Access
The interaction between filler and matrix materials in a composite structure significantly influences the effective performance of electronic devices employed in capacitive and resistive applications.
Kiran Keshyagol, Shivashankarayya Hiremath, H. M. Vishwanatha, Pavan Hiremath   +3 more
doaj   +1 more source

Analytical methods for heat conduction in composites

Mathematical Modelling and Analysis, 2008
Analytical methods unifying the study of heat conduction in various type of composite materials are described. Analytical formulas for the effective (macroscopic) conductivity tensor are presented.
Vladimir Mityushev, Yurii Obnosov, Ekaterina Pesetskaya, Sergei Rogosin   +3 more
doaj   +1 more source