The Origin of Shear Turbulence
Previously, the turbulent flows were studied as they have been disregarding their origin, and without looking into some of the details of the mechanism of turbulence production and sustainment. This approach focusing its attention particularly on the details of the fluctuating motion superimposed o...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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National Institute for Aerospace Research “Elie Carafoli” - INCAS
2017-12-01
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| Series: | INCAS Bulletin |
| Subjects: | |
| Online Access: | http://bulletin.incas.ro/files/dumitrescu__cardos__vol_9_iss_4.pdf |
| Summary: | Previously, the turbulent flows were studied as they have been disregarding their origin, and without looking into some of the details of the mechanism of turbulence production and
sustainment. This approach focusing its attention particularly on the details of the fluctuating motion superimposed on the main motion led to most of controversial and misunderstood results from which the law of equal action and reaction, and the circulation-conserving were excluded. The paper is aiming at removing these drawbacks and presenting the turbulence phenomenon as a mechanical process triggered off at the beginning of motion. The fluid as deformable continuum without a definite shape must be guided by some physical surfaces, where the rotor-translational motion approximation is more suited than the no-acceleration parallel flow approximation. The main features of shear turbulence are described by means of the mechanical prototype of a perturbed rotor-translational motion continuously self-accelerating at wall and conserving the mass and angular momentum. |
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| ISSN: | 2066-8201 2247-4528 |