Thermal Modeling of Radiogenic Heating, Conduction, Melting, Metal-Silicate Segregation and Convection in Planetary Sciences


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Abstract


The results of the comprehensive numerical modeling of the radioactive heating of non-porous asteroids are presented. The radioactive heating resulted in the melting of the planetary bodies. This was followed by the gravity triggered metal-silicate segregation, thereby, producing a convective molten metallic iron-nickel core, surrounded by a convective molten silicate mantle and a crust. Our thermal models incorporate all these physico-chemical processes that eventually led to the planetary differentiation of asteroids, followed by the cooling of the molten metallic core and silicate magma-ocean. Apart from its applications in planetary sciences, the comprehensive thermal modeling technique involves wide-ranging processes that could be helpful in understanding some of the engineering and industrial problems
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Keywords


Thermal Models; Radioactivity; Melting; Convection; Fluid Dynamics; Vesta; DAWN Mission

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