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arXiv · 2006.15592

Saffman-Taylor Fingers at Intermediate Noise

Dan Shafir·David A. Kessler
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Abstract

We study Saffman-Taylor flow in the presence of intermediate noise numerically by using both a boundary-integral approach as well as the Kadanoff-Liang modified Diffusion-Limited Aggregation model that incorporates surface tension and reduced noise. For little to no noise, both models result reproduce the well-known Saffman-Taylor finger. We compare both models in the region of intermediate noise where we get occasional tip-splitting events, focusing on the ensemble-average. We show that as the noise in the system is increased, the mean behavior in both models approaches the $\cos^2(\pi y/W)$ transverse density profile far behind the leading front. We also investigate how the noise scales and affects both models.

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Dan Shafir, David A. Kessler. 2020-06-28. Saffman-Taylor Fingers at Intermediate Noise. https://doi.org/10.1103/physreve.102.063107

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