Abstract
The gas content of a foam bed has been experimentally investigated using a 50 × 80 mm2 column at the following parameters: pressure P=0.1−1.0 bar, W=0.5-2.0 m/sec, H = 140–180 mm. In all cases the gas phase was air and the liquid phase was water and aqueous solutions of ethanol and glycerol. It has been established that reducing the pressure causes a considerable decrease in gas content, leading to an increase in the depth of the starting layer of liquid h0. A formula that conforms with the experimental data to within ± 10% is obtained for the gas content.
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