DBpedia – Linked Data Fragments

Matches in DBpedia 2015-10 for { ?s ?p "In fluid dynamics, a vortex is a region in a fluid medium in which the flow is mostly rotating around an axis line, the vortical flow that occurs either on a straight-axis or a curved-axis. The plural of vortex is either vortices or vortexes. Vortices form in stirred fluids, such as liquid, gas, and plasma. Examples include: Smoke rings, Whirlpools in the wake of a boat, paddle, or aeroplane, The winds surrounding a tropical cyclone, tornado, or dust devil, and Atmospheric phenomena on other planets, such as Jupiter's Great Red Spot. Vortices are a major component of turbulent flow. In the absence of external forces, viscous friction within the fluid tends to organize the flow into a collection of irrotational vortices, possibly superimposed to larger-scale flows, including larger-scale vortices. In each vortex, the fluid's flow velocity is greatest next to its axis, and decreases in inverse proportion to the distance from the axis. The vorticity (the curl of the flow velocity) is very high in the core region surrounding the axis, and nearly absent in the greater vortex; pressure within the vortex decreases as the proximity from the axis increases.Once formed, vortices can move, stretch, twist, and interact in complex ways. A moving vortex carries with it some angular and linear momentum, energy, and mass. In a stationary vortex, the streamlines and pathlines are closed. In a moving or evolving vortex the streamlines and pathlines are stretched by the overall flow into loopy yet open curves."@en }

• Vortex abstract "In fluid dynamics, a vortex is a region in a fluid medium in which the flow is mostly rotating around an axis line, the vortical flow that occurs either on a straight-axis or a curved-axis. The plural of vortex is either vortices or vortexes. Vortices form in stirred fluids, such as liquid, gas, and plasma. Examples include: Smoke rings, Whirlpools in the wake of a boat, paddle, or aeroplane, The winds surrounding a tropical cyclone, tornado, or dust devil, and Atmospheric phenomena on other planets, such as Jupiter's Great Red Spot. Vortices are a major component of turbulent flow. In the absence of external forces, viscous friction within the fluid tends to organize the flow into a collection of irrotational vortices, possibly superimposed to larger-scale flows, including larger-scale vortices. In each vortex, the fluid's flow velocity is greatest next to its axis, and decreases in inverse proportion to the distance from the axis. The vorticity (the curl of the flow velocity) is very high in the core region surrounding the axis, and nearly absent in the greater vortex; pressure within the vortex decreases as the proximity from the axis increases.Once formed, vortices can move, stretch, twist, and interact in complex ways. A moving vortex carries with it some angular and linear momentum, energy, and mass. In a stationary vortex, the streamlines and pathlines are closed. In a moving or evolving vortex the streamlines and pathlines are stretched by the overall flow into loopy yet open curves.".