Which of the following denotes the effect of compressibility in fluid flow ?
Correct answer: A. Mach number
- A. Mach number
- B. Weber number
- C. Euler number
- D. Reynolds number
Explanation
The Mach number, Ma = V/c, compares fluid velocity with the speed of sound and therefore indicates the importance of compressibility effects. Reynolds, Weber, and Euler numbers represent viscous, surface-tension, and pressure effects, respectively.
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