A two-phase pure slurry model for planetary cores: one-dimensional solutions and implications for Earth's F-layer
A two-phase pure slurry model for planetary cores: one-dimensional solutions and implications for Earth's F-layer
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行星核心的两相纯浆体模型:一维解及其对地球 F 层的影响
DOI:
10.1017/jfm.2023.834
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发表时间:
2023
影响因子:
3.7
通讯作者:
Wilczynski F
中科院分区:
文献类型:
--
作者:
Wilczynski F
We develop and analyse a continuum model of two-phase slurry dynamics for planetary cores. Mixed solid–liquid slurry regions may be ubiquitous in the upper cores of small terrestrial bodies and have also been invoked to explain anomalous seismic structure in the F-layer at the base of Earth's liquid iron core. These layers are expected to influence the dynamics and evolution of planetary cores, including their capacity to generate global magnetic fields; however, to date, models of two-phase regions in planetary cores have largely ignored the complex fluid dynamics that arises from interactions between phases. As an initial application of our model, and to focus on fundamental fluid dynamical processes, we consider a non-rotating and non-magnetic slurry comprised of a single chemical component with a temperature that is tied to the liquidus. We study one-dimensional solutions in a configuration set up to mimic Earth's F-layer, varying gravitational strength , suggests that a pure iron slurry F-layer would contain a mean solid fraction of at most 5 %.
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影响因子:
2.3
作者:
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作者:
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通讯作者:
Gubbins D
DOI:
--
发表时间:
2020
期刊:
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DOI:
--
发表时间:
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期刊:
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