SBIR Phase II: Computational Laboratory for the Simulation of Flowing Granular Materials

提案#9401918 Staroselsky 这项工作的目标是开发成熟的计算模拟工具，允许按比例放大的实验室规模或半工业颗粒流系统的设计，以全面的工业尺寸。 实际应用范围从设计溜槽到料斗，再到垃圾箱和其他用于运输散装固体的系统。 第二阶段的具体目标是开发用户友好的，一般的几何形状和高效的计算机代码，这些流动的动力学模拟。 这项工作涉及结合分析和数值的越来越密集和复杂的颗粒材料与真实颗粒的影响。 理论工作将基于最先进的宏观力学方法，这一努力将最终导致为相关宏观场开发可靠的宏观方程。 数值研究将关注改进的计算和诊断手段的发展。 粒子动力学分子动力学（MD）模拟与几百万个粒子将发布测试的宏观方程，并改善所获得的结果，关于单粒子和双粒子分布函数。 研究结果将被用来开发一个有限体积连续力学代码和一个互补的，高效的MD代码。 用于散装固体运输分析的有限体积代码将促进斜槽、料斗和料仓的中小型设计按比例扩大到全尺寸工业应用。

Proposal #9401918 Staroselsky The goal of this work is to develop mature computational simulation tools to allow scaling up the designs of laboratory size or semi-industrial granular flow system to full scale industrial dimensions. Practical applications range from the design of chutes to hoppers to bins and other systems for transporting bulk solids. The specific goal of Phase II is to develop user friendly, general geometry and highly efficient computer codes for the simulation of the dynamics of these flows. This work involves combined analytical and numerical of the increasingly dense and complex granular material with real-particle effects. The theoretical work will be based on state-of-the-art statistical-mechanical methods, an effort which will culminate in the development of reliable macroscopic equations for the pertinent macrofields. The numerical studies will be concerned with the development of improved computational and diagnostic means. Particle dynamics molecular dynamics (MD) simulations with a few million particles will be issued to test the macroscopic equations and to improve the results obtained regarding the single-particle and two-particle distribution functions. The results studies will be used to develop both a finite-volume continuum mechanical code and a complementary, highly efficient MD code. The finite-volume code for bulk solid transport analysis will facilitate the scaling-up of small and medium-scale designs of chutes, hoppers, and bins to full-scale industrial applications.