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... > classical mechanics aspects > continuum mechanics > fluid mechanics > fluid dynamics > fluid flow > turbulence
... > theoretical physics aspects > field theory > classical field theory > continuum mechanics > fluid mechanics > fluid dynamics > fluid flow > turbulence

Terme préférentiel

turbulence  

Définition(s)

  • In fluid dynamics, turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to a laminar flow, which occurs when a fluid flows in parallel layers, with no disruption between those layers. Turbulence is commonly observed in everyday phenomena such as surf, fast flowing rivers, billowing storm clouds, or smoke from a chimney, and most fluid flows occurring in nature or created in engineering applications are turbulent. Turbulence is caused by excessive kinetic energy in parts of a fluid flow, which overcomes the damping effect of the fluid's viscosity. For this reason turbulence is commonly realized in low viscosity fluids. In general terms, in turbulent flow, unsteady vortices appear of many sizes which interact with each other, consequently drag due to friction effects increases. This increases the energy needed to pump fluid through a pipe. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Turbulence)

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RDF/XML TURTLE JSON-LD Dernière modif. 24/04/2023