Coalescence of Low-Viscosity Fluids in Air

Abstract

An electrical method is used to study the early stages of coalescence of two low-viscosity drops. A drop of aqueous NaCl solution is suspended in air above a second drop of the same solution which is grown until the drops touch. At that point a rapidly widening bridge forms between them. By measuring the resistance and capacitance of the system during this coalescence event, one can obtain information about the time dependence of the characteristic bridge radius and its characteristic height. At early times, a new asymptotic regime is observed that is inconsistent with previous theoretical predictions. The measurements at several drop radii and approach velocities are consistent with a model in which the two liquids coalesce with a slightly deformed interface.

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• Approach and Coalescence of Liquid Drops in Air
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• Perturbed breakup of gas bubbles in water: Memory, gas flow, and coalescence
• Confidence Interval for the Mean of a Bounded Random Variable and Its Applications in Point Estimation
• A New Framework of Multistage Hypothesis Tests
• A Likelihood Ratio Approach for Probabilistic Inequalities
• New Probabilistic Inequalities from Monotone Likelihood Ratio Property
• Estimating the Parameters of Binomial and Poisson Distributions via Multistage Sampling
• Multistage Estimation of Bounded-Variable Means
• Sequential Tests of Statistical Hypotheses with Confidence Limits
• A Geometric Approach for Bounding Average Stopping Time
• Sequential Estimation Methods from Inclusion Principle
• Exact Methods for Multistage Estimation of a Binomial Proportion
• Multistage Hypothesis Tests for the Mean of a Normal Distribution
• On Estimation of Finite Population Proportion
• Asymptotically Optimal Sequential Estimation of the Mean Based on Inclusion Principle