Characterizing micro-plasmas for aerospace applications: electric propulsion and active flow control

表征航空航天应用的微等离子体：电力推进和主动流量控制

• 批准号: RGPIN-2017-06364
• 负责人: Jugroot, Manish
• 金额: $ 1.82万
• 依托单位: Royal Military College of Canada
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638811
• 关键词: Characterizing; micro; plasmas; aerospace; applications

In recent years, significant efforts have been made to fabricate small plasma sources that can be integrated with other micro-devices to form more complex microsystems. Understanding and controlling the dynamics within small spaces will therefore be crucial to both fundamental research and technological innovations. Micro-scale plasmas with their very high concentration of charged and excited particles represent a new regime of operation for low-temperature plasmas. The proposal will describe the rationale and methods to achieve the goals that will contribute to new science and engineering opened by microplasmas in the aerospace field, namely plasma-based propulsion for small spacecraft and active flow control. The project will pursue the detailed understanding of all the flow parameters (both neutral gas and charged species) via computer simulations and investigate miniaturization of flow control and spacecraft propulsion systems. A self-consistent coupling modeling formalism will provide both a qualitative and quantitative evaluation of the effects between plasma and fluid. Interestingly, the high-fidelity simulation results have the potential of providing access to local but critical parameters (difficult to obtain experimentally due to the small scales) on other complex interactions between the plasma flow and gas: involving both momentum and energy transfers and also complex cross-related effects.

近年来，人们在制造小型等离子体源方面做出了重大努力，这些等离子体源可以与其他微器件集成，形成更复杂的微系统。因此，理解和控制小空间内的动态对于基础研究和技术创新都至关重要。具有高浓度带电和激发粒子的微尺度等离子体代表了低温等离子体的一种新的运行机制。该提案将描述实现微等离子体在航空航天领域开辟的新科学和工程目标的基本原理和方法，即小型航天器的等离子体推进和主动流动控制。该项目将通过计算机模拟详细了解所有流动参数（包括中性气体和带电气体），并研究流动控制和航天器推进系统的小型化。自洽耦合建模形式将提供等离子体和流体之间影响的定性和定量评估。有趣的是，高保真度模拟结果有可能提供关于等离子体流和气体之间其他复杂相互作用的局部但关键参数（由于小尺度难以通过实验获得）：包括动量和能量转移以及复杂的交叉相关效应。