Evolution of Primitive Hydrous Solar System Bodies: A Reaction-Transport-Mechanical Model

将建立一个完全耦合的反应-输运-力学模型和计算机代码来研究原始太阳系天体的含水蚀变。关于加热机制及其对冰融化、流体流动、压实和大规模矿物分区模式的影响的假设将被测试。将使用有限元和有限差分数值方法以及自适应网格技术来求解描述化学反应和传输、流体流动、通过传导和平流进行的热传输、化学和机械压实以及孔隙弹性和塑性变形的方程。这些研究预计将有助于研究小行星的蚀变过程的进化史，这是由物理和化学过程的完全耦合造成的；并为其他研究低温行星变化/分化过程的研究人员提供计算机代码。

9319120 Ortoleva A fully coupled reaction-transport-mechanical model and computer code will be developed to investigate the hydrous alteration of primitive Solar System bodies. Hypotheses regarding heating mechanisms and their effect on ice melting, fluid flow, compaction, and large-scale mineral zonation patterns will be tested. Finite element and finite difference numerical methods and adaptive grid techniques will be used to solve equations describing chemical reaction and transport, fluid flow, heat transport by conduction and advection, chemical and mechanical compaction, and poroelastic and plastic deformation. These investigations are expected to contribute to an evolutionary history of alteration processes in asteroids resulting from the full coupling of physical and chemical processes; and to result in a computer code available for other researchers studying low temperature planetary alteration/differentiation processes.