Diffusion of Large Nitrogen Bubbles into Tap Water Studied by the Rotary Chamber Technique

Abstract

The rotary chamber technique allows extended observation times of rising bubbles up into the 10-mm range. After establishing the technique in combination with optical sizing in previous publications, this work completes the case of nitrogen bubbles in tap water. The rise velocity and the mass transfer are measured for five degrees of water saturation. A oneparameter model equation involving the Archimedes number is offered for calculation. The limit of the analytical boundary layer model is depicted.