Volume 129, Number 1, January 2020
|Number of page(s)||7|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||12 February 2020|
Experimental study on the bifurcation of a density oscillator depending on density difference
Department of Physics, Chiba University - 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
Received: 23 October 2019
Accepted: 14 January 2020
Hydrodynamic instabilities often cause spatio-temporal pattern formations and transitions between them. We investigate a model experimental system, a density oscillator, where the bifurcation from a resting state to an oscillatory state is triggered by the increase in the density difference of the two fluids. Our results show that the oscillation amplitude increases from zero and the period decreases above a critical density difference. The detailed data close to the bifurcation point provide a critical exponent consistent with the supercritical Hopf bifurcation.
PACS: 82.40.Bj – Oscillations, chaos, and bifurcations / 05.45.-a – Nonlinear dynamics and chaos / 47.20.Ky – Nonlinearity, bifurcation, and symmetry breaking
© EPLA, 2020
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