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Journal articles on the topic 'Effective medium modelling'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Zhuromskyy, Oleksandr. "Applicability of Effective Medium Approximations to Modelling of Mesocrystal Optical Properties." Crystals 7, no. 1 (2016): 1. http://dx.doi.org/10.3390/cryst7010001.

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2

Lee, S. L., and J. H. Yang. "Modelling of effective thermal conductivity for a nonhomogeneous anisotropic porous medium." International Journal of Heat and Mass Transfer 41, no. 6-7 (1998): 931–37. http://dx.doi.org/10.1016/s0017-9310(97)00170-1.

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3

Janicki, Vesna, Jordi Sancho-Parramon, and Hrvoje Zorc. "Refractive index profile modelling of dielectric inhomogeneous coatings using effective medium theories." Thin Solid Films 516, no. 10 (2008): 3368–73. http://dx.doi.org/10.1016/j.tsf.2007.09.016.

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4

Jensen, Erling Hugo, Leiv-J. Gelius, Tor Arne Johansen, and Zhong Wang. "Consistent joint elastic-electrical differential effective-medium modelling of compacting reservoir sandstones." Geophysical Prospecting 61, no. 4 (2012): 788–802. http://dx.doi.org/10.1111/1365-2478.12014.

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5

Gutiérrez, Yael, Dolores Ortiz, Rodrigo Alcaraz de la Osa, José M. Saiz, Francisco González, and Fernando Moreno. "Electromagnetic Effective Medium Modelling of Composites with Metal-Semiconductor Core-Shell Type Inclusions." Catalysts 9, no. 7 (2019): 626. http://dx.doi.org/10.3390/catal9070626.

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The possibility of using light to drive chemical reactions has highlighted the role of photocatalysis as a key tool to address the environmental and energy issues faced by today’s society. Plasmonic photocatalysis, proposed to circumvent some of the problems of conventional semiconductor catalysis, uses hetero-nanostructures composed by plasmonic metals and semiconductors as catalysts. Metal-semiconductor core-shell nanoparticles present advantages (i.e., protecting the metal and enlarging the active sites) with respect to other hetero-nanostructures proposed for plasmonic photocatalysis appli

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6

Gong, Lunlun, Yonghong Wang, Xudong Cheng, Ruifang Zhang, and Heping Zhang. "A novel effective medium theory for modelling the thermal conductivity of porous materials." International Journal of Heat and Mass Transfer 68 (January 2014): 295–98. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2013.09.043.

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7

Soboleva, Olga N., and Ekaterina P. Kurochkina. "Subgrid modelling of convective diffusion in a multiscale random medium." Russian Journal of Numerical Analysis and Mathematical Modelling 34, no. 3 (2019): 151–62. http://dx.doi.org/10.1515/rnam-2019-0013.

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Abstract Effective coefficients for convective diffusion equations are obtained. Correlated random fields of conductivity and porosity are approximated by multiplicative cascades with log-normal distributions of probabilities. The theoretical result is checked numerically for the case of 3D plane flow of an incompressible fluid.

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8

Gilbert, R. P., and A. Panchenko. "Effective acoustic equations for a two-phase medium with microstructure." Mathematical and Computer Modelling 39, no. 13 (2004): 1431–48. http://dx.doi.org/10.1016/j.mcm.2004.07.002.

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9

Kim, Sangtae, and William B. Russel. "Modelling of porous media by renormalization of the Stokes equations." Journal of Fluid Mechanics 154 (May 1985): 269–86. http://dx.doi.org/10.1017/s0022112085001525.

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The permeability of a random array of fixed spheres has been calculated over the range of volume fractions from dilute to almost closest packing, by assuming pairwise-additive (low-Reynolds-number) hydrodynamic interactions within an effective medium. Non-convergent pair interactions arising from the long-range decay of the Stokeslet were removed by renormalizing the Stokes equation to determine the permeability of the effective medium, i.e. to include the mean screening effect of the other spheres. Pair interactions in this Brinkman medium were calculated by the method of reflections in the f

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10

Wieczorek, W., A. Zalewska, M. Siekierski, and J. Przyłuski. "Modelling the a.c. conductivity behaviour of composite polymeric electrolytes by the effective medium theory." Solid State Ionics 86-88 (July 1996): 357–62. http://dx.doi.org/10.1016/0167-2738(96)00147-6.

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11

Han, Tongcheng. "An effective medium approach to modelling the pressure-dependent electrical properties of porous rocks." Geophysical Journal International 214, no. 1 (2018): 70–78. http://dx.doi.org/10.1093/gji/ggy125.

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12

Scheller, Maik, Steffen Wietzke, Christian Jansen, and Martin Koch. "Modelling heterogeneous dielectric mixtures in the terahertz regime: a quasi-static effective medium theory." Journal of Physics D: Applied Physics 42, no. 6 (2009): 065415. http://dx.doi.org/10.1088/0022-3727/42/6/065415.

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13

Khardani, M., M. Bouaïcha, and B. Bessaïs. "Bruggeman effective medium approach for modelling optical properties of porous silicon: comparison with experiment." physica status solidi (c) 4, no. 6 (2007): 1986–90. http://dx.doi.org/10.1002/pssc.200674420.

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14

Suribhatla, R., I. Jankovic, A. Fiori, A. Zarlenga, and G. Dagan. "Effective Conductivity of an Anisotropic Heterogeneous Medium of Random Conductivity Distribution." Multiscale Modeling & Simulation 9, no. 3 (2011): 933–54. http://dx.doi.org/10.1137/100805662.

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15

Jankovic, Igor, Aldo Fiori, and Gedeon Dagan. "Effective Conductivity of an Isotropic Heterogeneous Medium of Lognormal Conductivity Distribution." Multiscale Modeling & Simulation 1, no. 1 (2003): 40–56. http://dx.doi.org/10.1137/s1540345902409633.

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16

Rowlands, S. F., J. Livingstone, and C. P. Lund. "Optical modelling of thin film solar cells with textured interfaces using the effective medium approximation." Solar Energy 76, no. 1-3 (2004): 301–7. http://dx.doi.org/10.1016/j.solener.2003.09.003.

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17

Kahnert, Michael. "Modelling radiometric properties of inhomogeneous mineral dust particles: Applicability and limitations of effective medium theories." Journal of Quantitative Spectroscopy and Radiative Transfer 152 (February 2015): 16–27. http://dx.doi.org/10.1016/j.jqsrt.2014.10.025.

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18

Gelius, Leiv-J., and Zhong Wang. "Modelling production caused changes in conductivity for a siliciclastic reservoir: a differential effective medium approach." Geophysical Prospecting 56, no. 5 (2008): 677–91. http://dx.doi.org/10.1111/j.1365-2478.2008.00720.x.

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19

Han, Tongcheng, Michael Ben Clennell, Marina Pervukhina, and Matthew Josh. "Effective medium modelling the effects of saturation on the joint elastic-dielectric properties of carbonates." ASEG Extended Abstracts 2015, no. 1 (2015): 1–3. http://dx.doi.org/10.1071/aseg2015ab141.

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20

Kitamura, Takayuki, and Yoshitaka Umeno. "Validity of effective medium theory for aluminium under tension." Modelling and Simulation in Materials Science and Engineering 11, no. 2 (2003): 127–36. http://dx.doi.org/10.1088/0965-0393/11/2/302.

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21

Orlik-Kożdoń, Bożena, and Artur Nowoświat. "Modelling and testing of a granular insulating material." Journal of Building Physics 42, no. 1 (2017): 6–15. http://dx.doi.org/10.1177/1744259117715715.

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In the following article, the Authors present the results of initial researches into a building component needed for thermal insulation. The building component is a elastic insulation plate made from recycling materials. The solution is protected by industry patter Elastyczna pyta izolacyjna No 23 621 for Silesian University of Technology Gliwice. The paper presents the determination method of effective thermal conductivity for granular materials. It is based on the geometrical model for the determination of granular medium structure, which is based on the theory of the highest-density arrange

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22

Olowofela, J. A., and J. A. Adegoke. "Modelling effective rheologies for viscoelastic porous media with application to silt, and medium and coarse sand." Journal of Geophysics and Engineering 1, no. 3 (2004): 240–43. http://dx.doi.org/10.1088/1742-2132/1/3/010.

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23

van Noorden, T. L. "Crystal Precipitation and Dissolution in a Porous Medium: Effective Equations and Numerical Experiments." Multiscale Modeling & Simulation 7, no. 3 (2009): 1220–36. http://dx.doi.org/10.1137/080722096.

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24

Canic, Suncica, Daniele Lamponi, Andro Mikelic, and Josip Tambaca. "Self-Consistent Effective Equations Modeling Blood Flow in Medium-to-Large Compliant Arteries." Multiscale Modeling & Simulation 3, no. 3 (2005): 559–96. http://dx.doi.org/10.1137/030602605.

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25

Levin, Valery M., and Juan M. Alvarez-Tostado. "Effective Poroelastic Properties of Transversely Isotropic Porous Medium with Aligned Spheroidal Inhomogeneities." International Journal of Fracture 148, no. 1 (2007): 85–92. http://dx.doi.org/10.1007/s10704-008-9182-x.

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26

Driscoll, T., D. R. Smith, and D. N. Basov. "Spectroscopic investigation of metamaterials across the effective medium threshold." Metamaterials 4, no. 4 (2010): 175–80. http://dx.doi.org/10.1016/j.metmat.2010.06.002.

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27

Cosenza, P., A. Ghorbani, C. Camerlynck, F. Rejiba, R. Guérin, and A. Tabbagh. "Effective medium theories for modelling the relationships between electromagnetic properties and hydrological variables in geomaterials: a review." Near Surface Geophysics 7, no. 5-6 (2009): 563–78. http://dx.doi.org/10.3997/1873-0604.2009009.

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28

Balasubramani, K., N. Sivarajasekar, and Mu Naushad. "Effective adsorption of antidiabetic pharmaceutical (metformin) from aqueous medium using graphene oxide nanoparticles: Equilibrium and statistical modelling." Journal of Molecular Liquids 301 (March 2020): 112426. http://dx.doi.org/10.1016/j.molliq.2019.112426.

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29

Song, Yongjia, Hengshan Hu, and Bo Han. "Effective properties of a porous medium with aligned cracks containing compressible fluid." Geophysical Journal International 221, no. 1 (2019): 60–76. http://dx.doi.org/10.1093/gji/ggz576.

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SUMMARY Understanding the wave propagation in fluid-saturated cracked rocks is important for detecting and characterizing cracked reservoirs and fault zones with applications in geomechanics, hydrogeology, exploration geophysics and reservoir engineering. In sedimentary rocks, microscopic-scale pores are usually filled with fluid. One logical means of modelling the essential features of such rocks is to use poroelasticity theory. But previous models of wave propagation in cracked porous medium are either restricted to low frequencies at which effects of the elastic scattering (scattering into

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30

Angiulli, Giovanni, Mario Versaci, Salvatore Calcagno, and Paolo Di Barba. "Quick retrieval of effective electromagnetic metamaterial parameters by using a Multi-fidelity Surrogate Modelling approach." European Physical Journal Applied Physics 90, no. 2 (2020): 20901. http://dx.doi.org/10.1051/epjap/2020200014.

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Electromagnetic metamaterials (MMs) are artificial composites that exhibit exceptional physical characteristics. Their design, which relies on the retrieving of the effective medium parameters, is usually a very time-consuming process because of the high number of full-wave simulations involved in this task. To alleviate the related computational burden, we propose to use a Multi-fidelity Surrogate Modelling (MFSM) approach. Numerical results demonstrate that this methodology turns out to be promising for a quick evaluation of the scattering parameters from which the effective constitutive par

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31

Salete, E., A. M. Vargas, A. García, J. J. Benito, F. Ureña, and M. Ureña. "An effective numeric method for different formulations of the elastic wave propagation problem in isotropic medium." Applied Mathematical Modelling 96 (August 2021): 480–96. http://dx.doi.org/10.1016/j.apm.2021.03.015.

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32

Attias, Eric, Kelvin Amalokwu, Millie Watts, et al. "Gas hydrate quantification at a pockmark offshore Norway from joint effective medium modelling of resistivity and seismic velocity." Marine and Petroleum Geology 113 (March 2020): 104151. http://dx.doi.org/10.1016/j.marpetgeo.2019.104151.

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33

RICHARDSON, G., C. P. PLEASE, and V. STYLES. "Derivation and solution of effective medium equations for bulk heterojunction organic solar cells." European Journal of Applied Mathematics 28, no. 6 (2017): 973–1014. http://dx.doi.org/10.1017/s0956792516000541.

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A drift-diffusion model for charge transport in an organic bulk heterojunction solar cell, formed by conjoined acceptor and donor materials sandwiched between two electrodes, is formulated. The model accounts for (i) bulk photogeneration of excitons, (ii) exciton drift and recombination, (iii) exciton dissociation (into polarons) on the acceptor–donor interface, (iv) polaron recombination, (v) polaron dissociation into a free electron (in the acceptor) and a hole (in the donor), (vi) electron/hole transport and (vii) electron–hole recombination on the acceptor–donor interface. A finite element

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34

Xia, Ling, Yinta Li, Rong Huang, and Shaoxian Song. "Effective harvesting of microalgae by coagulation–flotation." Royal Society Open Science 4, no. 11 (2017): 170867. http://dx.doi.org/10.1098/rsos.170867.

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This study developed a coagulation–flotation process for microalgae Chlorella sp. XJ-445 harvesting, which was composed of algal surface modification by combined use of Al 3+ and cetyltrimethylammonium bromide (CTAB) and followed dispersed bubble flotation. Dissolved organic matter (DOM) in the medium was firstly characterized and mainly consisted of hydrophilic low molecular weight molecules. The dosage of collector (CTAB) and coagulant (Al 3+ ) were optimized, and with the pretreatment of 40 mg Al 3+ and 60 mg CTAB per 1 g dry biomass without pH adjustment, a maximum flotation recovery effic

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35

Zhu, D., Q. Ren, Y. Xuan, Y. Chen, and I. D. Cluckie. "An effective depression filling algorithm for DEM-based 2-D surface flow modelling." Hydrology and Earth System Sciences 17, no. 2 (2013): 495–505. http://dx.doi.org/10.5194/hess-17-495-2013.

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Abstract. The surface runoff process in fluvial/pluvial flood modelling is often simulated employing a two-dimensional (2-D) diffusive wave approximation described by grid based digital elevation models (DEMs). However, this approach may cause potential problems when using the 2-D surface flow model which exchanges flows through adjacent cells, with conventional sink removal algorithms which also allow for flow exchange along diagonal directions, due to the existence of artificial depression in DEMs. In this paper, we propose an effective method for filling artificial depressions in DEM so tha

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36

Zhu, D., Q. Ren, Y. Xuan, Y. Chen, and I. Cluckie. "An effective depression filling algorithm for DEM-based 2-dimensional surface flow modelling." Hydrology and Earth System Sciences Discussions 9, no. 9 (2012): 10011–51. http://dx.doi.org/10.5194/hessd-9-10011-2012.

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Abstract. The surface runoff process in fluvial/pluvial flood modelling is often simulated employing a two-dimensional (2-D) diffusive wave approximation to described by grid based digital elevation models (DEMs). However, a serious problem of this approach may arise when using a 2-D surface flow model which exchanges flows through adjacent cells, or conventional rink removal algorithms which also allow flow to be exchanged along diagonal directions, due to the existence of artificial depression in DEMs. This study firstly analyses the two types of depressions in DEMs and reviews the current d

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37

Nikabadi, Mohsen Shafiei, and Amir Hakaki. "A Dynamic Model of Effective Factors on Open Innovation in Manufacturing Small and Medium Sized Companies." International Journal of System Dynamics Applications 7, no. 1 (2018): 1–26. http://dx.doi.org/10.4018/ijsda.2018010101.

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Open Innovation is a key to improve SMEs' performance in a dynamic marketplace. This article aims to present a dynamic model based on causal relationships among the most important effective factors on Open Innovation in manufacturing SMEs by using system dynamics modelling approach. To study the most important factors, the data collected by questionnaires filled by 275 experts, and analyzed by SPSS and PLS. Causal relationships among studied factors and efficacy coefficients of each factor were identified by fuzzy DEMATEL technique, the data collected from 12 experts and analyzed by MATLAB and

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38

Konkol, Jakub, and Lech Bałachowski. "Large deformation finite element analysis of undrained pile installation." Studia Geotechnica et Mechanica 38, no. 1 (2016): 45–54. http://dx.doi.org/10.1515/sgem-2016-0005.

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Abstract In this paper, a numerical undrained analysis of pile jacking into the subsoil using Abaqus software suit has been presented. Two different approaches, including traditional Finite Element Method (FEM) and Arbitrary Lagrangian–Eulerian (ALE) formulation, were tested. In the first method, the soil was modelled as a two-phase medium and effective stress analysis was performed. In the second one (ALE), a single-phase medium was assumed and total stress analysis was carried out. The fitting between effective stress parameters and total stress parameters has been presented and both solutio

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39

Han, Feng‐Yuan, Li‐Zheng Yin, Chao‐Hai Du, and Pu‐Kun Liu. "Robust Effective‐Medium Characteristics of Bianisotropic Reflective Metasurfaces based on Field‐Circuit Combined Analysis." Advanced Theory and Simulations 4, no. 2 (2021): 2000246. http://dx.doi.org/10.1002/adts.202000246.

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40

Guerin, F., P. Banneller, and M. Labeyrie. "Scattering of electromagnetic waves by helices and application to the modelling of chiral composites. I: simple effective-medium theories." Journal of Physics D: Applied Physics 28, no. 4 (1995): 623–42. http://dx.doi.org/10.1088/0022-3727/28/4/004.

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41

Minshull, T. A., and S. Chand. "The pore-scale distribution of sediment-hosted hydrates: evidence from effective medium modelling of laboratory and borehole seismic data." Geological Society, London, Special Publications 319, no. 1 (2009): 93–101. http://dx.doi.org/10.1144/sp319.8.

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42

Zubov, L. M., and A. N. Rudev. "An effective method of verifying Hadamard's condition for a non-linearly elastic compressible medium." Journal of Applied Mathematics and Mechanics 56, no. 2 (1992): 252–60. http://dx.doi.org/10.1016/0021-8928(92)90080-r.

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43

Ungerer, Marietjie J., Derik J. van der Westhuizen, Henning M. Krieg, and Cornelia G. C. E. van Sittert. "Molecular Modelling of the Hydrolysis of Tantalum and Niobium Pentafluoride." Advanced Materials Research 1019 (October 2014): 406–11. http://dx.doi.org/10.4028/www.scientific.net/amr.1019.406.

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<span><p><span style="font-family: Times New Roman;" face="Times New Roman"><span style="font-size: medium;" size="3">Tantalum </span><span style="font-size: medium;" size="3">(Ta) and niobium (Nb) are two metals with similar chemical and physical properties and are found together in nature. One form of Ta is tantalum pentafluoride, which is stable in reducing environments, is corrosive resistant and stable under harsh conditions</span><span style="font-size: medium;" size="3">.</span><span style="font-size: medium;" size="3"> Ta is c

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44

Parashkevova, Ludmila. "Some considerations on modelling and homogenization of multiphase light alloys." MATEC Web of Conferences 145 (2018): 02008. http://dx.doi.org/10.1051/matecconf/201814502008.

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The modelling strategies aimed to access the thermo-mechanical behavior of the up-to date light and superlight alloys should take into account characteristics of each particular manufacturing technology. In the present study the light alloys and materials of high porosity are regarded as multiphase composites for which the content of embedded phases is predominant. A new modification of differential effective medium theory is presented accounting for inclusion’s size effects. The applied approach is based on the size-sensitive dilute homogenization procedure with Cosserat material matrix. Nume

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45

Freyer, Pascal, Bodo D. Wilts, and Doekele G. Stavenga. "Reflections on iridescent neck and breast feathers of the peacock, Pavo cristatus." Interface Focus 9, no. 1 (2018): 20180043. http://dx.doi.org/10.1098/rsfs.2018.0043.

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The blue neck and breast feathers of the peacock are structurally coloured due to an intricate photonic crystal structure in the barbules consisting of a two-dimensionally ordered rectangular lattice of melanosomes (melanin rodlets) and air channels embedded in a keratin matrix. We here investigate the feather coloration by performing microspectrophotometry, imaging scatterometry and angle-dependent reflectance measurements. Using previously determined wavelength-dependent refractive indices of melanin and keratin, we interpret the spectral and spatial reflection characteristics by comparing t

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46

Pinfield, Valerie J., and Richard E. Challis. "Modelling the backscatter from spherical cavities in a solid matrix: Can an effective medium layer model mimic the scattering response?" Journal of Physics: Conference Series 269 (January 1, 2011): 012016. http://dx.doi.org/10.1088/1742-6596/269/1/012016.

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47

Teodorovich, E. V. "An improved perturbation theory method for describing the effective permeability of a randomly heterogeneous medium." Journal of Applied Mathematics and Mechanics 66, no. 3 (2002): 439–46. http://dx.doi.org/10.1016/s0021-8928(02)00053-9.

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48

Çakır, Fatih Hayati, Mehmet Alper Sofuoğlu, and Selim Gürgen. "Machining of Hastelloy-X Based on Finite Element Modelling." Advanced Engineering Forum 30 (November 2018): 1–7. http://dx.doi.org/10.4028/www.scientific.net/aef.30.1.

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Nickel-based alloys provide high corrosion resistance and high-temperature strength but these alloys possess poor machinability. Hastelloy-X is a nickel based alloy that has been used for high temperature use. There are many studies about finite element modeling of aerospace alloys but studies in literature with Hastelloy-X are limited. In the present work, machining characteristics of Hastelloy-X were investigated and a numerical model was developed for the turning operation of Hastelloy-X. Two input parameters (cutting speed and feed rate) were variated in the operations and the results were

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49

Suaily, Samsiah, and Siti Zubaidah Ismail. "Development of Product Service System Modelling in SMED: The Case of Inventory Control." Journal of Modern Manufacturing Systems and Technology 1, no. 1 (2018): 94–109. http://dx.doi.org/10.15282/jmmst.v1i1.203.

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    Development of Product Service System (PSS) in Small and Medium Enterprise Development (SMED) has been growing rapidly in the manufacturing industries. PSS is a combination between product and service in one system. Off ering a PSS in a manufacturing requires effective inventory control. However, for manufacturing company increased focus on inventory control on PSS means new challenges because PSS inventory is not only created through the physical products, but also with services. The research carried out involved proposing generic model using IDEF0 and evaluate the

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50

Xu, Song, Xiaoming Tang, Yuanda Su, and Chunxi Zhuang. "Seismic shear wave anisotropy of an anisotropic rock containing aligned cracks: theory and applications to experiment and field data." Geophysical Journal International 220, no. 1 (2019): 404–14. http://dx.doi.org/10.1093/gji/ggz456.

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SUMMARY Cracks universally exist in Earth's crustal rocks. Many rocks are intrinsically anisotropic, which, when coupled with crack-induced anisotropy, significantly affect seismic wave propagation through the rocks. Using the method of sphere equivalency of effective scattering, we have developed a technique to model the effective moduli of transversely isotropic (TI) media containing cracks. The modelling results show that the wave characteristics are significantly affected by the interaction of the two anisotropy mechanisms. To validate the validity and accuracy, the theory was applied to a

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