Gompertz Law in Clean Foam Coalescence

Frontiers in Physics

Gun Oh¹  Marta Gonçalves¹  Byung Mook Weon² 

[1] Soft Matter Physics Laboratory, School of Advanced Materials Science and Engineering, SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, South Korea;Soft Matter Physics Laboratory, School of Advanced Materials Science and Engineering, SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon, South Korea;Research Center for Advanced Materials Technology, Sungkyunkwan University, Suwon, South Korea;

关键词: foam;    bubble;    coarsening;    coalescence;    aging;    Gompertz law of mortality;   

DOI  :  10.3389/fphy.2021.620568

来源: Frontiers

【 摘 要 】

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.

【 授权许可】

CC BY