We study both, by experimental and numerical means the fluid dynamical
phenomenon of edge tones. Of particular interest is the verification
of scaling laws relating the frequency f to given quantities, namely
d, the height of the jet, w, the stand–off distance and the velocity
of the jet. We conclude that the Strouhal number Sd is related to
the geometrical quantities through Sd = C ⋅ (d / w)n with n ≈ 1,
in contrast to some analytical treatments of the problem. The constant
C of the experiment agrees within 13–15\% with the result of the
numerical treatment. Only a weak dependence on the Reynolds number
with respect to d is observed. In general, a very good agreement
of the experimental and the numerical simulations is found.
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