Frontiers in Physics (May 2021)

Gompertz Law in Clean Foam Coalescence

  • Gun Oh,
  • Marta Gonçalves,
  • Byung Mook Weon,
  • Byung Mook Weon

DOI
https://doi.org/10.3389/fphy.2021.620568
Journal volume & issue
Vol. 9

Abstract

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Clean foams tend to age with time through sequential coalescence events. This study evaluates aging dynamics in clean foams by measuring bubble populations from coalescence simulation experiments and adopting biological population dynamics analysis. The population dynamics of bubbles in clean foams during coalescence show that the mortality rates of individual bubbles change exponentially with time, regardless of initial simulation conditions, consistent with the Gompertz mortality law commonly observed in biological aging. This result would be beneficial in understanding the aging dynamics of clean foams.

Keywords