Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.sna.2011.04.015
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dc.titleCollapsing bubble induced pumping in a viscous fluid
dc.contributor.authorKarri, B.
dc.contributor.authorPillai, K.S.
dc.contributor.authorKlaseboer, E.
dc.contributor.authorOhl, S.-W.
dc.contributor.authorKhoo, B.C.
dc.date.accessioned2014-10-07T09:01:49Z
dc.date.available2014-10-07T09:01:49Z
dc.date.issued2011-09-10
dc.identifier.citationKarri, B., Pillai, K.S., Klaseboer, E., Ohl, S.-W., Khoo, B.C. (2011-09-10). Collapsing bubble induced pumping in a viscous fluid. Sensors and Actuators, A: Physical 169 (1) : 151-163. ScholarBank@NUS Repository. https://doi.org/10.1016/j.sna.2011.04.015
dc.identifier.issn09244247
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/84917
dc.description.abstractAn experimental study on the effect of liquid viscosity on the pumping efficacy of a jetting bubble is presented. Solutions of different viscosities are obtained using different concentrations of glycerine in water. To study the pumping effect, a low-voltage electrical spark is used to create a bubble near a fixed horizontal plate with a hole. The bubble oscillates and collapses with a high speed jet towards the plate and pumps fluid through the hole. The bubble dynamics are recorded using a high speed camera. As the viscosity increases, the number of bubble oscillations increases even as the bubble eventually collapses with a jet. At very high viscosities, jet formation is suppressed and the bubble does not break up into smaller bubbles upon collapse. The effect of other parameters affecting pumping such as the distance of the bubble-center from the plate and the radius of the hole in the plate, is also studied. Results show that pumping is most effective below a limiting distance of the bubble-center from the plate, which in turn depends on the viscosity. The estimated volumetric flux due to pumping through the hole also decreases with an increase in viscosity. The effect of viscosity on a free-field bubble is also presented in terms of the increase in the number of oscillations and the variation of bubble radius with time. © 2011 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.sna.2011.04.015
dc.sourceScopus
dc.subjectBubble pump
dc.subjectFluid viscosity
dc.subjectHigh speed jet
dc.subjectOscillating and collapsing bubble
dc.subjectPumping efficacy
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1016/j.sna.2011.04.015
dc.description.sourcetitleSensors and Actuators, A: Physical
dc.description.volume169
dc.description.issue1
dc.description.page151-163
dc.description.codenSAAPE
dc.identifier.isiut000293112700018
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