Experimental verification of the fluid flow instability criterion when pressure inside a fluid is defined assuming a molecule to possess an energy field
The expression for the critical Reynolds number derived by Misra [Phys. Essays 25, 532 (2012)] is compared with experimental data. It is found that the ratio is approximately constant ∼0.21 with a range, 0.16‐0.26 for gases, and varies between 2 and 5 for liquids. Here, is the kinematic viscosity and where and are, respectively, the reduced Planck’s constant and the mass of an individual molecule of the fluid. The large difference between the gas and liquid values for is explained by the difference between the molecular separation lengths between gases and liquids.
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Document Type: Research Article
Publication date: September 6, 2015
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- Physics Essays has been established as an international journal dedicated to theoretical and experimental aspects of fundamental problems in Physics and, generally, to the advancement of basic knowledge of Physics. The Journal's mandate is to publish rigorous and methodological examinations of past, current, and advanced concepts, methods and results in physics research. Physics Essays dedicates itself to the publication of stimulating exploratory, and original papers in a variety of physics disciplines, such as spectroscopy, quantum mechanics, particle physics, electromagnetic theory, astrophysics, space physics, mathematical methods in physics, plasma physics, philosophical aspects of physics, chemical physics, and relativity.
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