Bulletin of the American Physical Society
61st Annual Meeting of the APS Division of Fluid Dynamics
Volume 53, Number 15
Sunday–Tuesday, November 23–25, 2008; San Antonio, Texas
Session MN: Micro Fluids VI
8:00 AM–10:10 AM, Tuesday, November 25, 2008
Chair: Jonathan Posner, Arizona State University
Abstract ID: BAPS.2008.DFD.MN.4
Abstract: MN.00004 : Intrinsically Pulsating Electrohydrodynamic Cone-Jets
8:39 AM–8:52 AM
When the flow rate of an electrohydrodynamic cone-jet is self-regulated, the jet typically pulsates intrinsically due to the imbalance between the liquid supplied to the cone and that discharged through the jet. We used high-speed microscopic imaging and oscilloscopic current measurements to characterize these intrinsic pulsations. The measured kHz-range pulsation frequency compares favorably to a model we developed drawing an analogy between pulsating cone-jet on a supported meniscus and that on an isolated charged drop. The scaling law is expected to be applicable to electrohydrodynamic drop formation and miniaturized electrospray systems.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.DFD.MN.4
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