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Aeroacoustics of Low Mach Number Flows by William Devenport, Stewart Glegg

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10

Aeroacoustic testing and instrumentation

Abstract

Most experimental testing in aeroacoustics is carried out using wind tunnels. Unless information is required at full scale about a large vehicle or application, running a wind tunnel is usually far less expensive than conducting a field test. It also provides a more controlled environment that can be particularly useful when insight into the fundamental physics is desired. Wind tunnel testing is the focus of this chapter. Some of the different wind tunnel configurations used for low Mach number experimental work are described, as are the acoustic corrections that must be applied to most wind tunnel measurements. This chapter concludes with an overview of some pressure and velocity measurement ...

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