Large-Scale Numerical Simulations of Stellar Systems

麦克米兰博士将研究恒星动力系统的行为 使用新的计算技术和能力。 特别是 他将对两个独立的，但密切相关的， 相关的，涉及自引力动力学的问题 系统. 第一个需要扩大现有的一体化 技术进入新的领域，通过合并 将新的部队评估方法纳入已建立的综合代码。 第二个涉及到一个著名的详细调查 三体问题，着重讨论其参数的结构 空间的散射遇到，并对所谓的稳定性 分层三元组。 这项工作的成果将是：（一） 开发新的恒星动力学积分代码， 允许引入一种新的现实主义的质量 星星集群模拟;（ii）在我们的显着改善 了解驱动微物理过程的微物理过程 演化，并确定星星集群的外观;及（iii） 重要的新增加的武器库的数值技术， 将使我们能够充分利用下一个 超级计算机和并行计算机。 特别感兴趣的 是新型大规模并行计算机在星星中的应用 集群模拟和比较其适用于这些 与传统的超级计算机相比。

Dr. McMillan will study the behavior of stellar dynamical systems using new computational techniques and capabilities. In particular he will perform numerical studies of two separate, but closely related, problems involving the dynamics of self-gravitating systems. The first entails the extension of existing integration techniques into qualitatively new domains, via the incorporation of new force evaluation methods into established integration codes. The second involves a detailed investigation of the celebrated three-body problem, concentrating on the structure of its parameter space for scattering encounters, and on the stability of so called hierarchical triples. The results of this work will be: (i) the development of a new stellar dynamical integration code that will permit a qualitatively new degree of realism to be introduced into star cluster simulations; (ii) a significant improvement in our understanding of the microphysical processes that drive the evolution, and determine the appearance of star clusters; and (iii) important new additions to the arsenal of numerical techniques that will enable us to fully utilize the capabilities of the next generation of super and parallel computers. Of particular interest is the application of a new massively parallel computer in star cluster simulations and comparison of its suitability for these computations with that of more traditional supercomputers.