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Title: No-slip condition

Description: As a fluid flows near a solid surface, it "sticks" to the surface, i.e., the fluid matches the velocity of the surface. This so-called "no-slip" condition is a very important one that must be satisfied in any accurate analysis of fluid flow phenomena.

Dye injected at the bottom of a channel through which water is flowing forms a stagnant layer near the bottom due to the noslip condition. As the dye filament is moved away from the bottom, the motion of the water is clearly apparent. A significant velocity gradient is created near the bottom.



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