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A note on the initial condition for the formation of foams

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  • Pithia, K.D.

Abstract

It is shown that the initial condition which is input into the model describing bubble growth in liquids needs to be re-examined for the case of rapid foam formation. The initial condition that is assumed in foam formation is the critical nucleus; it is from here that the expansion occurs. For a rapid foam formation the initial condition needs to be changed, the size adopted is that of a bubble which allows the onset of instability. This instability occurs when the pressure difference between the inside of the bubble and the outside is small and approaching a difference of the order of 1 to 2 atmospheres, this corresponds to bubble sizes of 10−4 m. This is the value that should be used as the initial condition in the differential equations expressing the growth of bubbles in the formation of a liquid foam.

Suggested Citation

  • Pithia, K.D., 1995. "A note on the initial condition for the formation of foams," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 222(1), pages 32-34.
    • Handle: RePEc:eee:phsmap:v:222:y:1995:i:1:p:32-34
    DOI: 10.1016/0378-4371(95)00256-1
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