Archives of Acoustics, 29, 4, pp. , 2004

Acoustic streaming caused by modulated sound and wave packets

A. Perelomova
Gdańsk University of Technology

The practical applications of sound relate to approximately
periodic sounds. It is shown, that theoretical results of acoustic streaming
based on a periodic everywhere sound, should be revised in spite of the
experimental data demonstrating the essentially different velocities of
streaming. A new approach, which allows evaluating the streaming caused by sound
of every type, both periodic and non-periodic, leads to similar results. The
results of numerical calculations of streaming caused by modulated sound and
series of pulses are compared with those given by formulae for a periodic
everywhere sound.
Keywords: acoustic streaming; non-periodic sound; wavepackets
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