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In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid is in a turbulent flow regime. [2] The moving fluid creates a space devoid of downstream-flowing fluid on the downstream side of the object.
Strudel, a German word, derives from the Middle High German word for "swirl", "whirlpool" or "eddy". [1]The apple strudel variant is called strudel di mele in Italian, strudel jabłkowy in Polish, jablečný štrúdl in Czech, strudel de mere in Romanian, jabolčni zavitek in Slovenian, štrudla od jabuka or savijača s jabukama in Croatian,almásrétes in Hungarian, [2] strudel da mëiles in ...
A whirlpool is a body of rotating water produced by opposing currents or a current running into an obstacle. [ 1 ] [ clarification needed ] Small whirlpools form when a bath or a sink is draining. More powerful ones formed in seas or oceans may be called maelstroms ( / ˈ m eɪ l s t r ɒ m , - r ə m / MAYL -strom, -strəm ).
In fluid dynamics, eddy diffusion, eddy dispersion, or turbulent diffusion is a process by which fluid substances mix together due to eddy motion. These eddies can vary widely in size, from subtropical ocean gyres down to the small Kolmogorov microscales , and occur as a result of turbulence (or turbulent flow).
He attributed the whirlpool to divine forces and mentioned that it was much stronger than the previously known Sicilian whirlpool Charybdis. Most other writers of the time believed that Moskstraumen played an important role in the ocean circulation, but, given a large number of tales and lack of scientific observations, grossly overestimated ...
Eddy lines vary in size based on the size of the water column, the gradient of the section, and the obstacle creating the eddy. Often containing boils and whirlpools, eddy lines can spin and grab your watercraft in unexpected ways, but if used correctly, they can be a really playful spot.
In fluid dynamics, the mixing length model is a method attempting to describe momentum transfer by turbulence Reynolds stresses within a Newtonian fluid boundary layer by means of an eddy viscosity. The model was developed by Ludwig Prandtl in the early 20th century. [ 1 ]
Two figures showing the bottom Ekman spiral. The figure on the left is the 3D Ekman spiral, the figure on the right 2D. The solution for the flow forming the bottom Ekman spiral was a result of the shear stress exerted on the flow by the bottom.