Phase VI: Development of the Core Fluid Dynamics Laboratory at UCLA

第六阶段：加州大学洛杉矶分校核心流体动力学实验室的开发

• 批准号: 2143939
• 负责人: Jonathan Aurnou
• 金额: $ 82.84万
• 依托单位: University of California-Los Angeles
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-06-15 至 2025-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2143939&HistoricalAwards=false
• 关键词: Phase; VI; Development; Core; Fluid; Phase; VI; Development; Core; Fluid

This project expands the realm of experimental- theoretical simulations of the processes occurring in Earth’s molten iron core that generate the geomagnetic field. It provides fundamental laboratory data characterizing convective turbulence. The outputs of this project will help to benchmark and validate advanced theories of the Earth's core flow and to build predictive models of planetary dynamo generation. This work will be useful to models of Earth's core and other planetary dynamos, fluid turbulence, solar and stellar convection zones, as well as oceanic and atmospheric dynamics. This project also will provide training in laboratory experimentation, numerical and theoretical modeling to three graduate students, at least two undergraduates and one postdoctoral researcher. The project disseminating information on a set of do-it-yourself experimental tools that can be used with students of all ages and backgrounds (https://diynamics.github.io/).This project is comprised of three main tasks. In Task 1, the researchers will carry out rotating convection experiments in water and silicone oils that are elucidating principles about turbulent core convective flows. For Task 2, the project will continue a series of liquid metal convection experiments, enhanced by closely-coupled numerical simulations. These experiments will focus on making the first ultrasonic Doppler measurements of velocity fields in turbulent magnetostrophic convection, to quantify and diagnose the complex dynamics occurring in a simulated polar parcel of Earth’s core fluid. Task 3 will carry out coupled laboratory-numerical simulations of rotating convection occurring at low latitudes in Earth’s core via the development of a new parabolic free surface convection device.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.

该项目扩展了对产生地磁场的地球铁芯中发生的过程的实验理论模拟领域。它提供了表征对流湍流的基本实验室数据。该项目的产出将有助于基准和验证地球核心流的先进理论，并建立行星发电机的预测模型。这项工作将对地球核心和其他行星发电机，流体湍流，太阳和恒星连接区以及海洋和大气动力学的模型有用。该项目还将为三名研究生，至少两名本科生和一名博士后研究人员提供实验室实验，数值和理论模型的培训。该项目在一组Do-yourself的实验工具上传播信息，这些工具可与所有年龄段和背景的学生一起使用（https://diynamics.github.io/).io/).this Project由三个主要任务组成。在任务1中，研究人员将在水和有机硅油中进行旋转的会议实验，这些实验阐明了有关湍流核心对流流的原则。对于任务2，该项目将继续进行一系列液态金属构造实验，并通过紧密耦合的数值模拟增强。这些实验将着重于制作湍流磁转换中速度场的第一个超声波多普勒测量值，以量化和诊断地球核心流体的模拟极性块中发生的复杂动力学。任务3将通过开发新的抛物线无抛物线免费表面会议设备，进行地球核心低纬度的旋转连接发生的耦合实验室数模拟。该奖项反映了NSF的法定任务，并被认为是通过基金会的知识分子优点和更广泛的影响审查标准来通过评估来通过评估来获得的支持。