Acoustic-induced drag on a bubble
dc.contributor.advisor | Larraza, Andres | |
dc.contributor.advisor | Denardo, Bruce C. | |
dc.contributor.author | Chan, Eugene Joseph Pilpa | |
dc.date | March, 1999 | |
dc.date.accessioned | 2012-09-07T15:34:56Z | |
dc.date.available | 2012-09-07T15:34:56Z | |
dc.date.issued | 1999-03 | |
dc.identifier.uri | http://hdl.handle.net/10945/13588 | |
dc.description.abstract | This work reports experiments that show that the drag on a bubble can be modified by the presence of isotropic, homogeneous broadband acoustic noise, when the band overlaps the bubble's resonance width. This constitutes an acoustic analog to the Einstein-Hopf drag on an electromagnetic dipole oscillator in the presence of isotropic and homogeneous electromagnetic fluctuations. In contrast with the electromagnetic Einstein-Hopf drag, band- limited acoustic noise can reduce the drag when the lower frequency of the spectrum coincides with the resonant frequency of the bubble. The modification of the drag experienced by a bubble in the presence of acoustic noise suggests possible applications to bubble migration and to heat transfer in a two-phase fluid. Depending on its size (i.e., resonant frequency), a bubble will experience less or more drag when the fluid is insonified with broadband noise, thereby modifying and possibly controlling bubble migration and heat transfer. | en_US |
dc.description.uri | http://archive.org/details/acousticinducedd1094513588 | |
dc.format.extent | x, 29 p.;28 cm. | en_US |
dc.language.iso | en_US | |
dc.publisher | Monterey, California: Naval Postgraduate School | en_US |
dc.title | Acoustic-induced drag on a bubble | en_US |
dc.type | Thesis | en_US |
dc.description.service | U.S. Navy (U.S.N.) author. | en_US |
etd.thesisdegree.name | M.S. in Applied Physics | en_US |
etd.thesisdegree.level | Masters | en_US |
etd.thesisdegree.discipline | Applied Physics | en_US |
etd.thesisdegree.grantor | Naval Postgraduate School | en_US |
dc.description.distributionstatement | Approved for public release; distribution is unlimited. |
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