Support for U. S. Participants in the Max Planck Program on Geophysical Particle-Fluid Flows (Dresden, Germany, March 14-April 15, 2016)

支持马克斯·普朗克地球物理粒子流体流计划的美国参与者（德国德累斯顿，2016 年 3 月 14 日至 4 月 15 日）

• 批准号: 1619768
• 负责人: James Jenkins
• 金额: $ 3.5万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-04-01 至 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1619768&HistoricalAwards=false
• 关键词: Support; U.; S.; Participants; Max

PI: Jenkins, James T. Proposal Number: 1619768 The proposal seeks funds to partially support the attendance (which includes the registration and travel) of about 25 US scientists to the five-week long program devoted to two-phase modeling of geophysical flows that involve particles and fluids that will take place at the Max Planck Institute for the Physics of Complex Systems in Dresden, Germany, between March 14th and April 15th, 2016.This symposium is motivated by the need to understand natural fluid-particle flow phenomena, such as (a) the influence of the unsteady mean and fluctuating velocities on particles in a turbulent flow over a range of particle concentration and ratios of particle-fluid mass density; (b) the nature of the inter-actions between particles and between the particles and fluid at the surface of a particle bed; and (c) the mechanisms by which large-scale features develop on the bed in systems driven by water or wind. Geophysical flows occur over a range of length scales, time scales, and concentrations that pose problems for present computational schemes based on the Navier-Stokes equations. At the present time, two-phase continuum formulations are the best hope for describing such flows, but they require correct physical models for terms that describe the interactions between the fluid and the particles. The development of such models will be the focus of this workshop.Understanding the natural flows upon which the workshop is focused would benefit modeling and prediction of phenomena quite important for human life and for the economy, such as sand storms, torrents of rock and snow-melt down mountainsides, avalanches of powder and granular snow, transport of sediment by waves at coastlines, in rivers and streams, and down continental shelves. Even plumes and surges of volcanic gas and ash that can cause disruption in air transportation and agriculture fall into this category.

PI：Jenkins，James T.提案编号：1619768该提议寻求资金支持出勤率（包括注册和旅行），约25名美国科学家到为期五周的长期计划，致力于对地球物理学的两相建模，这些地球物理学的涉及到Max Planck Instists的地球物理流程中，将在Max Plands Instermit中进行，并在Max Plancy Instutter中进行了研究。 2016年15日。这次研讨会是出于需要理解天然流体粒子流动现象的必要性，例如（a）（a）不稳定的平均值和波动速度对湍流中颗粒中粒子粒子浓度的颗粒的影响以及粒子含量范围的颗粒含量质量密度的范围； （b）颗粒之间以及颗粒和粒子表面表面的流体之间的互动的性质； （c）床上由水或风驱动的系统在床上发展大规模特征的机制。地球物理流在长度尺度，时间尺度和浓度范围内发生，这些浓度是基于Navier-Stokes方程为当前计算方案带来问题的。目前，两相连续制剂是描述这种流动的最佳希望，但是它们需要正确的物理模型来描述流体与颗粒之间相互作用的术语。这种模型的发展将是该研讨会的重点。理解研讨会集中的自然流程将有益于对人类生活和经济非常重要的建模和预测，例如沙暴，岩石和雪融化的山脉，山脉和雪融化的山脉，粉红色的雪橇和粒状雪，在沿海地区的储藏室和沿海流和流式的流动和流式的流动和流媒体，以及沿岸和流式的流动。即使是火山气和灰烬的羽毛和冲浪，也可能导致空中运输和农业的干扰属于这一类别。