Abstract
Conventional upper and lower bounds on the effective conductivity σe of two-phase composite media diverge from one another in the infinite-contrast limits (α=∞ or 0). We have derived a generally nontrivial upper bound on σe for suspensions of identical spheres when the spheres are superconducting, i.e., the upper bound does not necessarily become infinite in the limit α→∞. Similarly, a generally nontrivial lower bound on σe is derived for the aforementioned suspension when the spheres are perfect insulators, i.e., the lower bound does not necessarily vanish in the limit α→0. The bounds are computed for two models: simple cubic arrays and random arrays of spheres.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 8:25 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 4, 2024, 8:37 a.m.) |
Indexed | 1 year, 6 months ago (Feb. 7, 2024, 10:12 a.m.) |
Issued | 34 years, 3 months ago (May 15, 1991) |
Published | 34 years, 3 months ago (May 15, 1991) |
Published Print | 34 years, 3 months ago (May 15, 1991) |
@article{Torquato_1991, title={Improved bounds on the effective conductivity of high-contrast suspensions}, volume={69}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.347600}, DOI={10.1063/1.347600}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Torquato, S. and Rubinstein, J.}, year={1991}, month=may, pages={7118–7125} }