Abstract
The sounding mechanism in air-reed instruments is investigated based on the computational fluid dynamics. While previous studies have assumed a sound source based on the acoustic theory, the authors attempt in the present study to explain the source of sound as an essential factor defining the timbre of musical instruments. To deal with the high computational cost required to capture minute changes in pressure, a parallel supercomputer is employed for computation. The computational results are consistent with Brown’s experimental equation, and new frequency components revealed only in this three-dimensional analysis are identified and attributed to the harmonics of the air jet.
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