Geodesic
Self-oscillation periods of conical jet aerators with various apex angles
Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 5 (2015), pp. 60-64 
V. P. Karlikov; S. L. Tolokonnikov. Self-oscillation periods of conical jet aerators with various apex angles. Vestnik Moskovskogo universiteta. Matematika, mehanika, no. 5 (2015), pp. 60-64. http://geodesic.mathdoc.fr/item/VMUMM_2015_5_a13/
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     author = {V. P. Karlikov and S. L. Tolokonnikov},
     title = {Self-oscillation periods of conical jet aerators with various apex angles},
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     pages = {60--64},
     year = {2015},
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     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2015_5_a13/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

The stable regular self-oscillation modes of penetration of free hollow thin-walled turbulent water jets into water are experimentally studied for conical-jet aerators with various apex angles. A dependence of the self-oscillation period on the apex angle $\alpha$, where $45^\circ\le \alpha\le80^\circ$, is found for $150\le Q\le 550~\text{cm}^3/\text{c}$ and $1\le H\le28~\text{cm}$, where $Q$ is the jet discharge value and $H$ is the elevation of the jet aerator annular nozzle above the water surface.

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