For authors
Submission status

Archive (English)
   Volumes 81-92
   Volumes 41-60
   Volumes 21-40
   Volumes 1-20
   Volumes 61-80
      Volume 80
      Volume 79
      Volume 78
      Volume 77
      Volume 76
      Volume 75
      Volume 74
      Volume 73
      Volume 72
      Volume 71
      Volume 70
      Volume 69
      Volume 68
      Volume 67
      Volume 66
      Volume 65
      Volume 64
      Volume 63
      Volume 62
      Volume 61
VOLUME 77 (2003) | ISSUE 9 | PAGE 615
Duality and effective conductivity of random two-phase flat systems
The possible functional forms of the effective conductivity σe of the randomly inhomogeneous two-phase systems at arbitrary values of concentrations are discussed. Two explicit approximate expressions for effective conductivity are found using a duality relation, a series expansion of σe in the inhomogeneity parameter z and some additional conjectures about functional form of σe. They differ from the effective medium approximation, satisfy all necessary requirements and reproduce the known formulas for σe in weakly inhomogeneous case. This can signify also that σe of the two-phase randomly inhomogeneous systems may be a nonuniversal function, depending on some details of the structure of the random inhomogeneities.