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Reaction Force on Bubbles

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DOI: 10.4236/ns.2015.76034    2,383 Downloads   2,808 Views   Citations
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ABSTRACT

For large air bubbles rising steadily through still water, the upward reaction force on the spherical cap is calculated. When added to the buoyancy force on the roughly flat base of the bubble, the friction force at terminal velocity must be larger than it would be in the absence of the reaction force. Experimental data are used to estimate that the increase in the drag coefficient is expected to be about 4%.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Kenyon, K. (2015) Reaction Force on Bubbles. Natural Science, 7, 309-311. doi: 10.4236/ns.2015.76034.

References

[1] Kenyon, K.E. (2011) Drag of Large Bubbles. Physics Essays, 24, 1-3. http://dx.doi.org/10.4006/1.3518268
[2] Kenyon, K.E. (2006) Reaction Forces of Fluid Flows on Solid Boundaries. Physics Essays, 19, 507-516. http://dx.doi.org/10.4006/1.3028856
[3] Kenyon, K.E. (2015) Flaccid Bodies Move Faster in Fluids? International Journal of Innovation in Science and Mathematics. (In Press)
[4] Batchelor, G.K. (1967) An Introduction to Fluid Dynamics. Cambridge University Press, Cambridge, 476.
[5] Faber, T.E. (1995) Fluid Dynamics for Physicists. Cambridge University Press, Cambridge, 135. http://dx.doi.org/10.1017/cbo9780511806735

  
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