dorsal/arxiv
View SchemaTransition from classical to ultimate melting
| Authors | Edoardo Bellincioni, Kevin Zhong, Christopher J. Howland, Yiyu Zhou, Sander G. Huisman, Roberto Verzicco, Detlef Lohse |
|---|---|
| Categories | |
| ArXiv ID | 2601.06517vv1 |
| URL | https://arxiv.org/abs/2601.06517 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
Melting is omnipresent in nature and technology, with applications ranging from metallurgy, biology, food science, and latent thermal energy storage to oceanography, geophysics, and climate science, and occurring on all scales from sub-millimeter to global scales. The key objective is to understand the rate at which an object melts as a function of its size and of the ambient conditions. To achieve this it is important to be able to extrapolate from small scale experiments and observations to large or even global scales. This is done by scaling laws. However, these are only meaningful if there is no transition from one scaling relation to another one. Here we show, however, that for both fixed and freely-advected melting objects immersed in a turbulent flow a melting transition does exist, namely from slow melting at the small scales to fast melting at the large scales. We do so by controlled melting experiments and corresponding direct numerical simulations, covering four orders of magnitude in scale. The transition corresponds to the transition from a laminar-type boundary layer around the melting object to a turbulent-type boundary layer, i.e., from so-called classical turbulence to ultimate turbulence, with its enhanced transport properties. Our results thus provide a quantitative understanding of the flow physics of the melting process and thereby enable a better extrapolation and prediction of melt rates on large scales such as relevant in geophysics, oceanography, and climate science.
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"abstract": "Melting is omnipresent in nature and technology, with applications ranging from metallurgy, biology, food science, and latent thermal energy storage to oceanography, geophysics, and climate science, and occurring on all scales from sub-millimeter to global scales. The key objective is to understand the rate at which an object melts as a function of its size and of the ambient conditions. To achieve this it is important to be able to extrapolate from small scale experiments and observations to large or even global scales. This is done by scaling laws. However, these are only meaningful if there is no transition from one scaling relation to another one. Here we show, however, that for both fixed and freely-advected melting objects immersed in a turbulent flow a melting transition does exist, namely from slow melting at the small scales to fast melting at the large scales. We do so by controlled melting experiments and corresponding direct numerical simulations, covering four orders of magnitude in scale. The transition corresponds to the transition from a laminar-type boundary layer around the melting object to a turbulent-type boundary layer, i.e., from so-called classical turbulence to ultimate turbulence, with its enhanced transport properties. Our results thus provide a quantitative understanding of the flow physics of the melting process and thereby enable a better extrapolation and prediction of melt rates on large scales such as relevant in geophysics, oceanography, and climate science.",
"arxiv_id": "2601.06517",
"authors": [
"Edoardo Bellincioni",
"Kevin Zhong",
"Christopher J. Howland",
"Yiyu Zhou",
"Sander G. Huisman",
"Roberto Verzicco",
"Detlef Lohse"
],
"categories": [
"physics.flu-dyn"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Transition from classical to ultimate melting",
"url": "https://arxiv.org/abs/2601.06517",
"version": "v1"
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