Di Spirito Nicola Antonio, Mirzaagha Shadi, Di Maio Ernesto, Grizzuti Nino, Pasquino Rossana
DICMaPI, Università degli Studi di Napoli Federico II, P.le Tecchio 80, 80125 Napoli, Italy.
Langmuir. 2022 Nov 8;38(44):13429-13436. doi: 10.1021/acs.langmuir.2c01875. Epub 2022 Oct 26.
We analyzed bubble rupture and hole opening dynamics in a non-Newtonian fluid by investigating the retraction process of thin films after inflation at different blowing rates. The experiments were modeled through a dimensional analysis, with the aim of establishing a general approach on the bubble rupture dynamics and discerning the role of viscous, elastic, surface, and inertial forces on the opening velocity, according to the nature of the specific fluid. A new mathematical model, which includes all possible contributions to the hole opening dynamics, was proposed, to the best of our knowledge for the first time. The experimental evidence on the opening velocity as a function of the inflation rate was found to be in good agreement with the prediction of the model. The sensitivity of our modeling was tested by comparing our results with the existing models of retracting velocity.
我们通过研究不同吹气速率下薄膜充气后收缩过程，分析了非牛顿流体中的气泡破裂和开孔动力学。通过量纲分析对实验进行建模，目的是建立一种关于气泡破裂动力学的通用方法，并根据特定流体的性质，识别粘性力、弹性力、表面力和惯性力对开孔速度的作用。据我们所知，首次提出了一个新的数学模型，该模型包含了对开孔动力学所有可能的影响因素。开孔速度作为充气速率函数的实验证据与模型预测结果吻合良好。通过将我们的结果与现有的收缩速度模型进行比较，测试了我们建模的敏感性。
