Practice question
The boundary layer thickness (δ) is defined as the distance from the surface where the fluid velocity becomes approximately:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 190% of free-stream velocity
- 250% of free-stream velocity
- 30% of free-stream velocity
- 499% of free-stream velocity✓
Correct answer
99% of free-stream velocity
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