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- W2078345103 abstract "We demonstrate that fluid flow cloaking solutions, based on active hydrodynamic metamaterials, exist for two-dimensional flows past a cylinder in a wide range of Reynolds numbers (Re's), up to approximately 200. Within the framework of the classical Brinkman equation for homogenized porous flow, we demonstrate using two different methods that such cloaked flows can be dynamically stable for Re's in the range of 5--119. The first highly efficient method is based on a linearization of the Brinkman-Navier-Stokes equation and finding the eigenfrequencies of the least stable eigenperturbations; the second method is a direct numerical integration in the time domain. We show that, by suppressing the von K'arm'an vortex street in the weakly turbulent wake, porous flow cloaks can raise the critical Reynolds number up to about 120 or five times greater than for a bare uncloaked cylinder." @default.
- W2078345103 created "2016-06-24" @default.
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- W2078345103 date "2012-11-21" @default.
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- W2078345103 title "Flow stabilization with active hydrodynamic cloaks" @default.
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- W2078345103 doi "https://doi.org/10.1103/physreve.86.056313" @default.
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