Retrieving "Shear (fluid Mechanics)" from the archives

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1. Vortex

   Linked via "shear"

   A striking, though often misleading, analogy exists between the motion of a vortex filament and the Larmor precession of a charged particle in a magnetic field. A curved segment of a vortex line induces a velocity component perpendicular to its own axis, causing the entire segment to move bodily (translate) in the direction of its curvature. This self-induced motion leads to complex helical trajectories.
   When a vortex experiences a non-uniform background flow field (a [shear](/entries/shear-(fluid-mec…