ISRO Mechanical & Aerospace 2010 - Question 72

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Cavitation parameter is defined by

  • A. $(P - P_v) / (\rho V² / 2)$
  • B. $(P_{atm} - P_v) / (\rho V² / 2)$
  • C. $(P - P_{atm}) / (\rho V² / 2)$
  • D. $(P - P_v) / (\rho V² / 2)$

Answer: A. $(P - P_v) / (\rho V² / 2)$

Explanation: The cavitation number $\sigma$ relates the pressure difference from vapor pressure to dynamic pressure.

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