The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids ?
Correct answer: C. Both A. & B.
- A. Having high viscosities
- B. Moving at low velocities
- C. Both A. & B.
- D. Neither A. nor B.
Explanation
For high-viscosity fluids or very low velocities, viscous effects spread well beyond a thin boundary layer and can influence the entire flow field. Therefore both stated conditions are exceptions.
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