Fundamental Studies of Accelerated Low Temperature Combustion Kinetics by Nonequilibrium Plasmas

1402640 lempert等离子体通常用于促进燃料的燃烧，特别是那些难以点燃或持续燃烧的燃料，因为它们可能在低温下燃烧。这项建议的重点是获取数据，这将有助于了解等离子体如何促进燃料在这些不利条件下燃烧。合作pi将与俄亥俄州都柏林市的学校系统建立合作安排。该拓展计划将包括现场课堂演示，虚拟课堂参观，并参与都柏林专业实习计划。该项目还将在几个方面促进“发现和理解”。除了研究生的参与外，该项目还将包括本科生的积极参与。该计划还将对美国（和世界）的科学基础设施产生重大影响。特别是，该项目产生的低温数据集将提供给世界各地的研究人员用于模型开发和验证。共同pi和学生定期为美国和国外的科学会议撰稿，并维护一个综合网站。该计划侧重于非平衡等离子体加速低温燃烧动力学的实验和建模研究。目标是生成广泛的基准低温（~400 - 850K）数据集，这些数据将为H2/空气和各种碳氢化合物/空气混合物中最重要的等离子体增强燃料氧化过程提供新的物理见解，特别是非平衡振动和亚稳态电子态物种的作用以及关键自由基（如O， H和OH）的大型非平衡池。该方法将利用一套广泛的激光诊断来测量电子密度和温度的时间演变，重物质旋转/平移温度，N2和H2振动分布函数，以及单个纳秒持续放电脉冲后选定的物质浓度。实验将在一对互补的纳秒等离子体放电细胞中进行，这两个细胞都将产生具有良好光学通路的漫射等离子体。

1402640LempertPlasmas are often used to facilitate burning of fuels, especially those either difficult to ignite or to sustain burning, as they might be burning at low temperatures. This proposal focuses on obtaining data that would help to understand how plasmas facilitate fuel burning under these unfavorable conditions. A collaborative arrangement will be established between the co-PIs and the Dublin, OH city school system. This outreach program will include live in-classroom demonstrations, virtual classroom visits, and participation in the Dublin Professional Internship Program. The program will also advance "discovery and understanding" in several ways. In addition to the participation of graduate students, the program will include active participation of undergraduates. The program will also significantly impact the scientific infrastructure in the U.S (and the world). In particular, the low temperature data sets generated from this program will be made available to researchers world-wide for model development and validation. The co-PIs and students are regular contributors to scientific meetings in the U.S. and abroad, and maintain a comprehensive web site.The proposed program focuses on experimental and modeling studies of the acceleration of low temperature combustion kinetics by non-equilibrium plasmas. The goal is to generate extensive sets of benchmark low temperature (~400 - 850K) data that will provide new physical insight into the most important plasma-enhanced fuel oxidation processes in H2/air and a variety of hydrocarbon/air mixtures, in particular the role of non-equilibrium vibrational and metastable electronic state species and large non-equilibrium pools of key radical species such as O, H, and OH. The methodology will utilize an extensive suite of laser diagnostics to perform measurements of the temporal evolution of electron density and temperature, heavy species rotational/translational temperature, N2 and H2 vibrational distribution function, and selected species concentrations after application of a single nano-sec duration discharge pulse. Experiments will be performed in a complimentary pair of nano-second plasma discharge cells, both of which will produce diffuse plasmas with excellent optical access.