What Is Fluid Turbulence?

What Is Fluid Turbulence?

Turbulent oscillation and convection

Gert Naue

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30,9 MB

DRM: Wasserzeichen

ISBN-13: 9783740701550

Verlag: TWENTYSIX

Erscheinungsdatum: 19.07.2018

Sprache: Englisch

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This book presents an innovative wave structure theory of turbulence. The most important advancement is the provision of turbulence parameters of the optimal self-organization of turbulence from theoretical investigations via information entropy assessments.
The new theoretical results are in very good agreement with the experimentally confirmed results of turbulent convection velocity fields at free and forced turbulence. In connection with the logarithmic wall law, it is shown that there is no viscous sublayer.
The formulation of the oscillation problem of turbulence and the solution of boundary value tasks with coordinate systems adapted to the specific task are provided for many technically significant turbulent flows, including smooth and rough pipe flow, confusor and diffuser flow, swirl flow, stirrer flow, inlet flow, intermittency, wake flow and free jets.
An epistemological component of the innovation is the representation of turbulence by con-travariant vector fields which are characterized by the stability of the turbulence structures at changed structural density. The turbulence structures act as active momentum transmitters of refracted monopoles, dipoles, tripoles and quadrupoles in the flow field. The dissipation mechanism with regard to the processes in turbulence structures is, for the first time, qualita-tively and quantitatively described.
The transition from the contravariant turbulence velocity field to the covariant convection velocity field induce refraction and entanglement.
The principles of turbulence act as fractal principle, reflection principle, entanglement principle, refractive principle and convolution principle.
The wave structure theory of turbulence provides an arraying tool for further investigations into numerous open problems.
Gert Naue

Gert Naue

Gert Naue was born July 21st, 1934 in Leipzig, Germany. Following his Abitur (general qualification for university entrance) in 1953, he studied aerodynamics at the Technical University of Dresden and obtained an engineering diploma in 1958 and a doctorate in 1962. His habilitation in 1967 was supervised by Prof. Werner Albring. From 1961 to 1965 Gerd Naue held the position of Head of the Research Department for Thermodynamics at the Research and Testing Institute for Fluid Kinetic Machines in Dresden and the Scientific and Technical Center for Power Plants in Pirna. From 1965 to 1967 he was Lecturer and then from 1967 to 1992 Full Professor of Fluid Mechanics at the Technical University of Merseburg. In 1992 he became a managing partner at a privately held engineering service provider in Dresden. Since retirement in 1999 he has been engaged in freelance assignments in the fields of process engineering, fluid mechanics and thermodynamics.

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