Thermal and percolative analysis of 3D diffuse-interface composite microstructure

This dataset contains supplementary data and utilities of the publication "Data-driven thermal and percolative analysis of 3D diffuse-interface composite microstructure" (Fathidoost, 2023).

This dataset documents homogenized anisotropic thermal conductivity of the corresponding microstructure (identified by volume fraction (Vf) and aspect ratio (Ar)) as a tensor with normalized interface thermal resistance (see Table 1). Voxelized digital microstructures and utilities are also attached for visualizing the overall thermal anisotropy.

Table 1: The geometrical and thermal parameters employed in the generated microstructures.

Parameters
Value (Unit)
Type
Increment

Minor principal axes length
5 (nm)
Constant
-

Aspect ratio, \(A_\mathrm{r}\)
[1 ,6]
Linear
1

Inclusion volume fraction, \(V_\mathrm{f}\)
[5, 60]
Linear
5

Thermal conductivity ratio, \(K_\mathrm{r}\)
[15, 100]
Linear
15

Normalized interface resistance, \(\tilde{R}_\mathrm{s} \)
[1e-6, 1e10]
Logarithmic
1e2

Notice: The digital microstructure has been voxelized and stored in the ExodusII format, which can be loaded and visualized by the post-processing software, such as ParaView. In order to perform the homogenization, interface smoothening is required, i.e., to generate diffuse interfaces. In this work, we smoothened the interface by operating transient Allen-Cahn calculation with finite timesteps. Sec. 2.1 of the publication for more information).