Question

Reynolds number is significant in____________

• A. Supersonics, as with projectiles and jet propulsion
• B. Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzle etc.
• C. Simultaneous motion through two fluids where there is a surface of discontinuity, gravity force, and wave making effects, as with ship's hulls.
• D. All options are correct

Answer 1

Answer:

B. Full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzle etc.

Reynolds number is the ratio of inertia force to viscous force in flowing fluid. It is significant in full immersion or enclosed flow like pipes, aircraft wings, and nozzles.