A symposium on sediment dynamics in geophysical flows using two-phase flow methodology

使用两相流方法论地球物理流中沉积物动力学研讨会

• 批准号: 1849092
• 负责人: Tian-Jian (Tom) Hsu
• 金额: $ 1.5万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-12-01 至 2019-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1849092&HistoricalAwards=false
• 关键词: symposium; sediment; dynamics; geophysical; flows

This award will provide funding to the University of Delaware to facilitate the participation of young researchers and to support travel for young scholars as invited speakers to the 4th Symposium on Two-phase Modelling for Sediment Dynamics in Geophysical Flows will be held on September 17 ? 19, 2019 in the University of Delaware, Newark, DE, USA. The symposium aims at accelerating advances in sediment transport by bringing together fluid physicists, oceanographers, geologists, geomorphologists, and engineers in terrestrial, coastal and marine systems. In addition to oral and poster presentations, the symposium will feature achievements of young researchers and a workshop for open-source modeling tools. The participation of oceanographers, geomorphologists and geologists, especially those early career researchers (graduate students, postdoctoral researchers and early career scientists and faculty) will be facilitated by reducing participation costs. Furthermore, this symposium will be expanded to cover more field observation, laboratory experiments and instrumentation for measuring multiphase flow in geophysical flow. A balanced coverage of terrestrial, coastal and marine applications and including multiphase flow applications beyond sediment transport, such as air-sea interaction and flow over vegetation is planned. This activity seeks to complement the tremendous progresses made in the past two decades benefited significantly from regional scale open-source models and facilitate the dissemination and development of similar open-source models for wave-scale and turbulence/grain-scale processes that started to emerge recently. This symposium will promote the creation of open-source community-driven numerical modeling tools for small-scale processes by hosting a 3-hour clinical workshop for an opensource Eulerian two-phase model for sediment transport, SedFoam. Sediment transport dynamics involve complex nonlinear interaction between waves, currents, turbulence, and sediment particles with a range of particle inertia and concentration. It has been one of the most challenge fluid mechanics problems attracting many researchers interested in turbulent flows, multiphase flows and granular flows. In the context of earth surface processes, additional challenges arise from vastly different temporal and spatial scales to further address pressing issues such as sediment source to sink, impact of sea-level rise and increase storm intensity on shoreline evolution, coastal habitat and the sustainability of infrastructure and coastal community resilience. To accelerate the progress in understanding the physical mechanisms controlling coastal changes and earth surface processes, it is important to bring together communities from the areas of fluid mechanics, physical oceanography, geomorphology and geology into a symposium to share their findings, nourish collaboration and to provide new perspectives. The symposium will focus on: (1) Addressing cross-scale modeling challenges in geophysical flows. (2) Identifying mechanisms behind several intriguing field observations and develop benchmark problems for high-fidelity, fluid-mechanics-based investigations that the community can address in the next couple of years. (3) Advancing sediment transport modeling and promote existing and new open-source community modeling tools.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项将为特拉华大学提供资金，以促进年轻研究人员的参与，并支持年轻学者的旅行，作为邀请发言人到第四次研讨会上关于地球物理流中沉积物动力学的两相模型的演讲者，将于9月17日举行吗？ 2019年19月19日在美国纽瓦克大学，美国德拉华大学。该研讨会旨在通过将陆地，沿海和海洋系统的流体物理学家，海洋学家，地质学家，地质学家和工程师汇集在一起​​，旨在加快沉积物运输的进步。除了口头和海报演示外，研讨会还将以年轻研究人员的成就和开源建模工具的研讨会为特色。海洋学家，地貌学家和地质学家的参与，尤其是那些早期的职业研究人员（研究生，博士后研究人员以及早期职业科学家和教职员工）的参与，将通过降低参与成本来促进。此外，该研讨会将扩展，以涵盖更多的现场观察，实验室实验和仪器，以测量地球物理流中的多相流。计划对陆地，沿海和海洋应用的平衡覆盖范围，包括超出沉积物传输以外的多相流量应用，例如空气相互作用和植被上的流动。这项活动旨在补充过去二十年中所取得的巨大进步，从区域尺度开源模型中受益匪浅，并促进了用于波量表和湍流/粒度/粒度流程的类似开源模型的传播和开发，这些模型开始逐渐涌现。最近。该研讨会将通过举办3小时的临床研讨会来为小型工艺创建开源社区驱动的数值建模工具，用于用于Sedfoam沉积物运输的Opensource Eulerian两相模型。沉积物传输动力学涉及波浪，电流，湍流和沉积物颗粒之间的复杂非线性相互作用，并具有一定粒子的惯性和浓度。它一直是吸引许多对湍流，多相流和颗粒流量感兴趣的研究人员的挑战性流体力学问题之一。在地球表面过程的背景下，额外的挑战是由截然不同的时间和空间尺度引起的，以进一步解决压迫问题，例如沉积物来源，海平面上升的影响以及暴风雨强度对海岸线进化，沿海栖息地以及可持续性的影响基础设施和沿海社区的弹性。为了加快控制沿海变化和地面过程的物理机制的进展，重要的是要将来自流体力学，物理海洋学，地貌和地质学领域的社区汇集到研讨会中，以分享他们的发现，滋养并提供滋养并提供新观点。研讨会将重点关注：（1）应对地球物理流中的跨尺度建模挑战。 （2）识别几个有趣的现场观察背后的机制，并为基于流体力学的调查而产生基准问题，社区可以在接下来的几年中解决这些问题。 （3）推进沉积物运输建模并促进现有和新的开源社区建模工具。该奖项反映了NSF的法定任务，并且使用基金会的知识分子优点和更广泛的影响审查标准，被认为值得通过评估来获得支持。