The Effect of Bubbles on Developed Turbulence
نویسندگان
چکیده
We report on measurements of energy spectra, second and higher order structure functions in bubbly turbulence. The void fraction is up to 2.9 % with an mean equivalent bubble size of 3-5 mm. We find the results of [I. Mazzitelli, D. Lohse, F. Toschi, Phys. Fluids, 15 L5 (2003)] qualitatively confirmed, i.e. a more pronounced energy enhancement on small scales than on large scales due to the presence of the bubbles, leading to a less steep slope in the spectrum as compared to the Kolmogorov -5/3 law.
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تاریخ انتشار 2004