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首页> 外文期刊>Izvestiya. Physics of the solid earth >Gravitational Differentiation in the Regimes from Stokes Settling to Rayleigh-Taylor Flows
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Gravitational Differentiation in the Regimes from Stokes Settling to Rayleigh-Taylor Flows

机译：从Stokes沉淀到瑞利泰勒流量的制度中的引力分化

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摘要

The Earth's core was formed under gravitational differentiation in the process of the separation of iron and silicates. Most of the iron has gone into the core as early as during the growth of the Earth. However, iron continued to precipitate even during the subsequent period of partial solidification which developed from the bottom upwards. At the different stages and in the different layers of the mantle, iron was deposited in different regimes. This paper addresses the mechanisms of the deposition of a cloud of heavy interacting particles (or drops) in a viscous fluid. A new approach that makes it possible to analytically and numerically trace the changes in the structure of the flows in a two-component suspension under the continuous transition from the Stokes settling (for the case of a cloud of large particles) to the Rayleigh-Taylor flows and heavy diapirs (for the case of a cloud of small particles) is developed. It is numerically and analytically shown that the both regimes are different limiting cases of the sedimentation convection in suspensions.
机译：在铁和硅酸盐分离过程中，地球的核心在重力分化下形成。在地球的生长期间，大多数铁已经进入核心。然而，即使在从底部开发的部分凝固期间，铁也仍继续沉淀。在不同的阶段和地幔的不同层，铁被沉积在不同的方案中。本文解决了粘性流体中重配颗粒（或滴）覆盖的沉积机制。一种新的方法，使得可以在连续转变的双组分悬架中分析和数值追踪从斯托克斯沉降（对于大颗粒云的情况）到瑞利泰勒的连续过渡的流动结构中的变化开发了流动和重落尾（对于小颗粒云的情况）。在数值和分析上表明，这两个制度都是悬浮液中沉降对流的不同限制病例。

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