The loci of points of all the fluid particles that have passed continuously through a particular spatial point in the past.
Dye steadily injected into the fluid at a fixed point extends along a streakline.
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| Fig. 1. Streaklines | Fig. 2. Streamlines (dash grey), pathline (solid red) and streakline (solid blue) |
See also
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See also Streamlines and Pathlines