Physics of a toy geyser
Martin Brandenbourger, St\'ephane Dorbolo, Baptiste Darbois Texier

TL;DR
This study investigates the physics of a toy geyser through experiments and models, exploring eruption dynamics, conditions for geyser behavior, and coupled reservoir effects to better understand natural geyser phenomena.
Contribution
The paper introduces a thermodynamic model predicting eruption intervals and extends analysis to coupled reservoirs, revealing complex dynamics akin to natural geysers.
Findings
Eruption frequency depends on heating power and setup height.
A thermodynamic model accurately predicts eruption timing.
Coupled reservoirs exhibit complex, synchronized eruption behavior.
Abstract
A geyser can be reproduced by a toy experiment composed of a water pool located above a water reservoir, the two being connected by a long and narrow tube. When the bottom reservoir is heated, the system experiences periodic eruptions of hot water and steam at the top similarly to the geyser effect occurring in nature. The eruption frequency of a toy geyser is inspected experimentally as a function of the heating power and the height of the set-up. We propose a thermodynamic model of this system which predicts the time between eruptions. Besides, the geometric and thermodynamic conditions required to observe a geyser effect are discussed. The study of the toy geyser is then extended to the case of two reservoirs connected to the same tube. In such a configuration, an eruption in a reservoir may entrain the eruption of the other. Such a coupled system adopts a complex time-evolution…
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Taxonomy
TopicsAdvanced Thermodynamics and Statistical Mechanics · Statistical Mechanics and Entropy · Theoretical and Computational Physics
