FIG. 8.

(a) Inverse average power spectra of interface height fluctuations $\left({⟨{\left|h\left(k\right)\right|}^2⟩}^{-1}\right)$ as a function of the square of wave the number (k²). (b) Mean-squared Pearson correlation coefficient in ${⟨{\left|h\left(k\right)\right|}^2⟩}^{-1}$ vs k² averaged over replicates ($⟨r^2⟩$). (c) Absolute difference between the pressure tensors in the two perpendicular dimensions to the domain interface averaged over replicates $\left(⟨\left|\mathrm{\Delta }{P}_{\alpha \alpha }^{\perp }\right|⟩\right)$.