Controlling Mixing Inside a Droplet by Time Dependent Rigid-body Rotation

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dc.creatorChabreyrie, R.
dc.creatorVainchtein, D.
dc.creatorChandre, C.
dc.creatorSingh, P.
dc.creatorAubry, N.
dc.date2008-09-22
dc.date.accessioned2026-07-07T10:04:26Z
dc.date.available2026-07-07T10:04:26Z
dc.descriptionThe use of microscopic discrete fluid volumes (i.e., droplets) as microreactors for digital microfluidic applications often requires mixing enhancement and control within droplets. In this work, we consider a translating spherical liquid droplet to which we impose a time periodic rigid-body rotation which we model using the superposition of a Hill vortex and an unsteady rigid body rotation. This perturbation in the form of a rotation not only creates a three-dimensional chaotic mixing region, which operates through the stretching and folding of material lines, but also offers the possibility of controlling both the size and the location of the mixing. Such a control is achieved by judiciously adjusting the three parameters that characterize the rotation, i.e., the rotation amplitude, frequency and orientation of the rotation. As the size of the mixing region is increased, complete mixing within the drop is obtained.
dc.description6 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/0809.3728
dc.identifierhttp://arxiv.org/abs/0809.3728
dc.identifierIMECE2008-68026
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169677
dc.subjectFluid Dynamics
dc.subjectCellular Automata and Lattice Gases
dc.titleControlling Mixing Inside a Droplet by Time Dependent Rigid-body Rotation
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