Oscillation and collective behavior in convective flows
Abstract
Oscillation and collective behavior in convection-driven fluid columns are investigated and discussed in analogy with similar phenomenon observed for the flickering flames of candle bundles. It is shown experimentally that an ascending circular Helium gas column performs an oscillation which is similar in several aspects to the oscillation of diffusion flames. Increasing the nozzle diameter leads to a decrease in the oscillation frequency, while increasing the flow rate results in an increase in this frequency. For helium columns oscillating at nearby frequency and placed close to each other anti-phase synchronization and beating phenomena is observed. A simple toy-model based on elementary hydrodynamics describes the observed oscillations and leads to oscillation frequencies in the right order of magnitude.
Cite
@article{arxiv.2109.10286,
title = {Oscillation and collective behavior in convective flows},
author = {Attila Gergely and Csaba Paizs and Robert Tötös and Zoltán Néda},
journal= {arXiv preprint arXiv:2109.10286},
year = {2022}
}
Comments
10 pages, 10 Figures, Latex