منابع مشابه
Anatomy of a bathtub vortex.
We present experiments and theory for the "bathtub vortex," which forms when a fluid drains out of a rotating cylindrical container through a small drain hole. The fast down-flow is found to be confined to a narrow and rapidly rotating "drainpipe" from the free surface down to the drain hole. Surrounding this drainpipe is a region with slow upward flow generated by the Ekman layer at the bottom...
متن کاملThe bathtub vortex in a rotating container
By A. ANDERSEN, T. BOHR , B. STENUM, J. JUUL RASMUSSEN AND B. LAUTRUP Cornell University, Department of Theoretical and Applied Mechanics, Ithaca, NY 14853, USA The Technical University of Denmark, Department of Physics, DK-2800 Kgs. Lyngby, Denmark Risø National Laboratory, Optics and Plasma Research Department, DK-4000 Roskilde, Denmark The Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenh...
متن کاملVortex evolution in non-axisymmetric impulsive spin-up from rest
The flow evolution of water in a completely filled rectangular container, impulsively rotated from rest to a steady angular speed, is investigated experimentally and numerically. The pathlines of the fluid from rest to solid-body rotation primarily follow one of two possible configurations that have been described previously in the literature. The first, consisting of two cyclones that form fol...
متن کاملCongestion in the bathtub
This paper presents a model of urban traffic congestion that allows for hypercongestion. Hypercongestion has fundamental importance for the costs of congestion and the effect of policies such as road pricing, transit provision and traffic management, treated in the paper. In the simplest version of the model, the unregulated Nash equilibrium is also the social optimum among a wide range of pote...
متن کاملAn autopsy case of bathtub drowning in epilepsy.
We report an autopsy case of bathtub drowning in epilepsy. A 26-year-old female with mental retardation had been treated for refractory epilepsy. Her younger sister found her floating supine in the bathtub 45 min after starting bathing. Neuropathological examination revealed cerebral cortical dysplasia in the precentral gyrus of the left hemisphere, which had not been detected by MRI, suggestin...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2005
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.1938216