Question

When water at 70 °C flows through a converging section of pipe, the pressure decreases in the direction of flow. Estimate the minimum absolute pressure that can develop without causing cavitation. Express your answer in SI units.

Answer 1

Answer:

P_v = 31.2 KPa (abs)

Explanation:

-Cavitation may occur in the converging section of the pipe when the pressure equals the vapor pressure of the fluid i.e water.

- From Table B.2 , In Appendix B for water at 70 C we can look up the vapor pressure of the water to be equal:

                                    P_v @70C = 31.2 KPa  (abs)