Plume
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it’s A 5 letters crossword definition.
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Possible Answers:
FEATHER.
Last seen on: –Mirror Classic Answer List â 21-September-2022
The Telegraph – QUICK CROSSWORD NO: 668 – Mar 14 2021
Random information on the term “Plume”:
In hydrodynamics, a plume or a column is a vertical body of one fluid moving through another. Several effects control the motion of the fluid, including momentum (inertia), diffusion and buoyancy (density differences). Pure jets and pure plumes define flows that are driven entirely by momentum and buoyancy effects, respectively. Flows between these two limits are usually described as forced plumes or buoyant jets. “Buoyancy is defined as being positive” when, in the absence of other forces or initial motion, the entering fluid would tend to rise. Situations where the density of the plume fluid is greater than its surroundings (i.e. in still conditions, its natural tendency would be to sink), but the flow has sufficient initial momentum to carry it some distance vertically, are described as being negatively buoyant.
Usually, as a plume moves away from its source, it widens because of entrainment of the surrounding fluid at its edges. Plume shapes can be influenced by flow in the ambient fluid (for example, if local wind blowing in the same direction as the plume results in a co-flowing jet). This usually causes a plume which has initially been ‘buoyancy-dominated’ to become ‘momentum-dominated’ (this transition is usually predicted by a dimensionless number called the Richardson number).