@prefix mdl: <http://data.loterre.fr/ark:/67375/MDL> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

mdl:-G2J0PTDS-W
  skos:prefLabel "atmospheric turbulence"@en, "turbulence atmosphérique"@fr ;
  a skos:Concept ;
  skos:broader mdl:-X58GK0NX-W .

mdl:-Q8HCTRT8-Z
  skos:prefLabel "turbulence isotrope"@fr, "isotropic turbulence"@en ;
  a skos:Concept ;
  skos:broader mdl:-X58GK0NX-W .

mdl:-TL1ML24T-N
  skos:prefLabel "turbulence anisotrope"@fr, "anisotropic turbulence"@en ;
  a skos:Concept ;
  skos:broader mdl:-X58GK0NX-W .

mdl:-G0P50SZ1-2
  skos:prefLabel "écoulement des fluides"@fr, "fluid flow"@en ;
  a skos:Concept ;
  skos:narrower mdl:-X58GK0NX-W .

mdl:-QDWS7CH1-K
  skos:prefLabel "MHD turbulence"@en, "turbulence MHD"@fr ;
  a skos:Concept ;
  skos:broader mdl:-X58GK0NX-W .

mdl:-X58GK0NX-W
  skos:definition "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, <a href=\"https://en.wikipedia.org/wiki/Turbulence\" target=\"_blank\">https://en.wikipedia.org/wiki/Turbulence</a>)"@en, "La turbulence désigne l'état de l'écoulement d'un fluide, liquide ou gaz, dans lequel la vitesse présente en tout point un caractère tourbillonnaire : tourbillons dont la taille, la localisation et l'orientation varient constamment. Les écoulements turbulents se caractérisent donc par une apparence très désordonnée, un comportement difficilement prévisible et l'existence de nombreuses échelles spatiales et temporelles. De tels écoulements apparaissent lorsque la source d'énergie cinétique qui met le fluide en mouvement est relativement intense devant les forces de viscosité que le fluide oppose pour se déplacer. À l'inverse, on appelle laminaire le caractère d'un écoulement régulier. (Wikipedia, L'Encylopédie Libre, <a href=\"https://fr.wikipedia.org/wiki/Turbulence\" target=\"_blank\">https://fr.wikipedia.org/wiki/Turbulence</a>)"@fr ;
  skos:hiddenLabel "turbulences"@en, "Turbulence"@fr, "Turbulence"@en, "turbulences"@fr ;
  skos:narrower mdl:-G2J0PTDS-W, mdl:-QDWS7CH1-K, mdl:-TL1ML24T-N, mdl:-Q8HCTRT8-Z ;
  skos:inScheme mdl: ;
  skos:broader mdl:-G0P50SZ1-2 ;
  skos:exactMatch <https://en.wikipedia.org/wiki/Turbulence>, <https://fr.wikipedia.org/wiki/Turbulence> ;
  skos:prefLabel "turbulence"@fr, "turbulence"@en ;
  a skos:Concept .

mdl: a skos:ConceptScheme .