Physics · Fluid Dynamics
When a fluid flows along a solid boundary, the fluid layer in contact with the boundary comes to rest due to viscosity. This deceleration inside the boundary layer is accompanied by:
- 1high constant velocity of the fluid
- 2high velocity gradients that exist at and near the boundary✓
- 3high velocity flow outside the boundary layer
- 4surface tension of the fluid flow along the solid boundary
Correct answer
high velocity gradients that exist at and near the boundary
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