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

原始含水太阳系天体的演化：反应-输运-力学模型

• 批准号: 9319120
• 负责人: Peter Ortoleva
• 金额: $ 13.14万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-04-01 至 1997-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9319120&HistoricalAwards=false
• 关键词: Evolution; Primitive; Hydrous; Solar; System

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.

小行星9319120 将发展一个完全耦合的反应-输运-力学模型和计算机代码，以研究太阳系原始天体的含水蚀变。 将测试有关加热机制及其对冰融化，流体流动，压实和大规模矿物分带模式的影响的假设。 有限元和有限差分数值方法和自适应网格技术将被用来解决方程描述化学反应和运输，流体流动，热传导和对流，化学和机械压实，以及多孔弹性和塑性变形。 预计这些研究将有助于了解物理和化学过程充分结合所产生的小行星蚀变过程的演变历史;并产生一种计算机代码，供研究低温行星蚀变/分化过程的其他研究人员使用。