acoustics
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Problem 1 Cavitation
An sound transducer in a freshwater lake generates very intense sinusoidal plane waves in the water. If during the negative half cycle, the total pressure (ambient plus acoustic pressure) becomes zero, cavitation (the production of air bubbles) may occur. Recall that the ambient pressure at a depth h is given as h = p0 + ρ0gh, where p0 is the atmospheric pressure above the surface of the water, ρ0 is the water density, and g is the acceleration due to gravity.
What is the maximum acoustic intensity that may be achieved without running the risk of cavitation at a transducer depth of 10 m? What is the SPL (re 1 μPa) that corresponds to this intensity?
8 years ago
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