BRIGE: Experimental Analysis of Vortex Flow in Porous Media

BRIGE：多孔介质中涡流的实验分析

• 批准号: 1227930
• 负责人: Fatemeh Hassanipour
• 金额: $ 17.43万
• 依托单位: University of Texas at Dallas
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2015-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1227930&HistoricalAwards=false
• 关键词: BRIGE; Experimental; Analysis; Vortex; Flow

PI: HassanipourProposal Number: 1227930A vast number of natural and man-made materials are solids that contain pores (voids), for example rocks, soil, biological tissues, cements, ceramics, etc. These porous media are used in many areas of applied science and engineering including filtration, soil mechanics, petroleum engineering, bioengineering, etc. The static properties of porous media have been studied intensively for many decades, but the understanding of dynamic interactions of fluids with porous media remains an important area of investigation that can yield critical and much-needed improvements to applications in health care, environment, and various other areas of engineering. The challenges in this area arise from the complex internal structure of a porous medium, together with the highly nonlinear dynamic behavior of fluids. The proposed activity involves the construction of a carefully conceived experimental apparatus that facilitates precise and repeatable experiments involving (dynamic) vortex flows and porous media. Key difficulties are addressed, firstly by a high-precision vortex generator devised in the PI's lab that is controlled by a computer, whose software is also developed in-house. This will allow the generation of a variety of velocity profiles for the fluid to an unprecedented level of precision. Secondly, a synthetic porous medium will be constructed whose optical refractive index is matched to the fluid, thus making it transparent and allowing observation and measurement of the flow by planar laser-induced fluorescence.Intellectual Merits of the proposed activity involves the investigation of fundamental scientific questions regarding vortex flows in porous media, namely uncovering the effect of (a) porosity, (b) permeability, (c) fluid density and viscosity, (d) injection velocity, pressure, pulse duration, and frequency on the behavior of fluid pattern separation, accumulation, and transport phenomena of vortex flow within the porous medium. This research is well motivated by preliminary results and will be conducted with a new and unique experimental setup for measurements and visualization of vortex flows in porous media. The interaction of vortex flows with porous media and their transport through porous media is a new direction that can potentially be transformative.Broader Impacts: This proposal benefits the society by contributions to the advancement of many processes and devices that are critically important to our well being due to their effect on healthcare (biomedical devices), the environment (underground flows), and agriculture (erosion, grain drying and conditioning), among others. The results of this research will be widely disseminated through the web, via conferences,as well as seminars. This research will be integrated with educational activities via new courses, by providing research opportunities for undergraduates in their required (capstone) design projects, as well as K-12 outreach via collaboration with HI-TECCC (High-Technology Education Coalition of Collin County). The proposed activity includes a carefully crafted broadening participation plan that has two main components: one targeting individuals with disability, and the other targeting under-represented minorities and women. The PI has created an accessible lab environment and has collaboration with UTD Office of Accessibility to make research positions available to disabled students. The PI also has an active, consistent, and successful track record in recruiting, retaining, and graduating female and minority students.

主要研究者：Hassanipour提案编号：大量的天然和人造材料是含有孔（空隙）的固体，例如岩石、土壤、生物组织、水泥、陶瓷等。这些多孔介质用于应用科学和工程的许多领域，包括过滤、土壤力学、石油工程、生物工程等。但是对流体与多孔介质的动态相互作用的理解仍然是一个重要的研究领域，其可以对健康护理、环境和各种其它工程领域中的应用产生关键的和急需的改进。 这一领域的挑战来自于多孔介质复杂的内部结构，以及流体的高度非线性动力学行为。 拟议的活动涉及一个精心构思的实验装置，有利于精确和可重复的实验，涉及（动态）涡流和多孔介质的建设。关键的困难得到解决，首先是由PI实验室设计的高精度涡流发生器，由计算机控制，其软件也是内部开发的。这将允许以前所未有的精度水平生成流体的各种速度分布。第二，将建造一种合成多孔介质，其光学折射率与流体相匹配，从而使其透明，并允许通过平面激光诱导荧光观察和测量流动。拟议活动的智力价值涉及研究有关多孔介质中涡流的基本科学问题，即揭示（a）孔隙率，（B）渗透率，（c）流体密度和粘度，（d）注射速度、压力、脉冲持续时间和频率对多孔介质内的涡流的流体模式分离、积聚和输送现象的行为的影响。这项研究是很好的动机，初步结果，并将进行一个新的和独特的实验装置的测量和可视化的涡流在多孔介质中。涡流与多孔介质的相互作用及其在多孔介质中的传输是一个具有潜在变革性的新方向。该提案通过促进许多工艺和设备的进步而使社会受益，这些工艺和设备由于其对医疗保健的影响而对我们的健康至关重要除其他外，还包括生物医学设备、环境（地下水流）和农业（侵蚀、谷物干燥和调节）。这项研究的结果将通过网络、会议和研讨会广泛传播。这项研究将通过新课程与教育活动相结合，为本科生提供必要的（顶点）设计项目的研究机会，以及通过与HI-TECCC（柯林县高科技教育联盟）合作进行K-12推广。拟议的活动包括一项精心制定的扩大参与计划，该计划有两个主要组成部分：一个针对残疾人，另一个针对代表性不足的少数群体和妇女。PI创造了一个无障碍的实验室环境，并与UTD无障碍办公室合作，为残疾学生提供研究职位。PI在招聘，保留和毕业女性和少数民族学生方面也有积极，一致和成功的记录。