Development of Three-dimensional Simulation Programs of Mantle Convection with Multiple Phases and/or Components

在本研究中，我们结合和改进了一套性能优良的基于我们自己的算法的数值程序，开发了高温高压极端条件下多相和/或多组分的地幔对流三维模拟程序。新的套件使我们能够对类地行星的地幔动力学进行数值模拟研究，包括(I)地球深部地幔中化学不均一性的发展，(Ii)地幔过渡区停滞板块上方的“大地幔楔形”(BMW)中的流动，以及(Iii)绝热压缩在大质量“超级地球”的地幔内热对流中的基本作用。

In this study we have developed three-dimensional simulation programs of mantle convection with multiple phases and/or components under extreme conditions with high temperature and pressure, by combining and improving a suite of numerical programs based on our own algorithm with an excellent performance. The new suite enabled us to conduct numerical simulation studies on the mantle dynamics of terrestrial planets including (i) the development of chemical heterogeneities in the Earth's deep mantle, (ii) the flows in the "Big Mantle Wedge" (BMW) above the stagnant slabs in the mantle transition zone, and (iii) the fundamental roles of adiabatic compression in the thermal convection in the mantles of massive "super-Earths".