کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
612448 | 1454614 | 2007 | 8 صفحه PDF | دانلود رایگان |
As a tool for transporting a drop inside another fluid, a charged conducting drop driven by Coulombic force is considered. Specifically, deformation and motion of a charged conducting drop under nonuniform electric fields are studied using the perturbation method. For simplicity in analysis, the applied electric field is assumed to be expressed as the sum of a uniform field and a linear field and the flow is assumed to be in the Stokes flow range. The deformed drop shape due to electrical stress is computed to the first order of the electrical Weber number (W ). Then the electric force and the hydrodynamic drag are computed to derive the formula of the translation velocity, which is valid up to O(W)O(W). Several important results have also been obtained for the effect of drop deformation on the electric and hydrodynamic forces exerted on the drop.
Periodically oscillating motion of a conducting drop under electric field in a dielectric liquid between two electrodes.Figure optionsDownload as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 310, Issue 2, 15 June 2007, Pages 599–606