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Local Volume Fraction Fluctuations
2002One of the most important morphological descriptors of heterogeneous materials is the volume fraction of the phases or, in the case of porous media, the porosity (i.e., the volume fraction of the fluid phase). Although the volume fraction is constant for statistically homogeneous media, on a spatially local level it fluctuates.
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Parallel hexahedral meshing from volume fractions
Engineering with Computers, 2012In this work, we introduce a new method for generating Lagrangian computational meshes from Eulerian-based data. We focus specifically on shock physics problems that are relevant to Eulerian-based codes that generate volume fraction data on a Cartesian grid. A step-by-step procedure for generating an all-hexahedral mesh is presented.
Steven J. Owen +2 more
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Particulate volume fractions in diffusion flames
Symposium (International) on Combustion, 1979Flame radiation, the dominant heat transfer mechanism in full scale fires, is in turn controlled primarily by the fraction of the flame volume occupied by solid carbon. Particulate volume fractions, fv, are measured in situ in small scale, 0(10 cm), buoyant diffusion flames supported in air by solid polystyrene, PMMA and POM, cellular polystyrene, two ...
P.J. Pagni, S. Bard
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An automatic constant-volume fraction collector
Journal of Chemical Education, 1952Presents the design of an automatic constant-volume fraction collector for use with chromatographic and ion exchange columns.
Joseph E. Varner, William A. Bulen
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Volume fraction analysis of human coronal dentin
Calcified Tissue Research, 1969A systematic point-count method was utilized to determine the volume fractions of peritubular and intertubular matrix in human coronal dentin. Contrary to previous thought, it was found that peritubular dentin represents a relatively large fraction of human coronal dentin, particularly in the inner one-half of the dentin, where the relative volumes of ...
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Volume-fraction profiles of adsorbed polymers
Journal of the Chemical Society, Faraday Transactions, 1990The structure of adsorbed polymer layers has been studied extensively, both experimentally and theoretically, in a diverse range of systems. Although the form of the volume-fraction profile of polymer segments, normal to the interface has been predicted in detail from theory, few experimental methods can probe more than the first or second moments of ...
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The fallacy of high volume fraction
Composites, 1973Abstract There are theoretical as well as practical reasons why a high glass content in glass fibre reinforced plastics is not always desirable. An optimum glass content is calculated to give maximum flexural strength and stiffness for simple beams and plates, this content being governed by similar rules to those that apply for the optimum ...
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Precise-Volume Fraction Collector
Analytical Chemistry, 1957D N. Eggenberger, E F. Cavanaugh
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Constant-Volume Fraction Collectors
Analytical Chemistry, 1955J. W. Hahn, Melvin Nyman
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