A propeller is tested in a water tunnel at 20C (similar to Fig 1 12a) The lowest pressure on the body can be estimated by a Bernoulli type relation, pmin po V2 2, where po 1 5 atm and V is the tunnel average velocity If V 18 m s, will there be cavitation If so, can we change the water temperature and avoid cavitation

Question: A propeller is tested in a water tunnel at 20C (similar to Fig. 1.12a). The lowest pressure on the body can be estimated by a

A propeller is tested in a water tunnel at 20°C (similar to Fig. 1.12a). The lowest pressure on the body can be estimated by a Bernoulli-type relation, pmin = po − ρV2/2, where po = 1.5 atm and V is the tunnel average velocity. If V = 18 m/s, will there be cavitation? If so, can we change the water temperature and avoid cavitation?

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