Experimental and Computational Study of Soot Morphology and Optical Characteristics for Improved Soot Modeling

[03224] long, Marshall b .题目：改进烟尘模型的煤烟形态和光学特性的实验和计算研究。来自陆地电源的燃烧产生的煤烟颗粒构成重大的健康风险，并且一直是严格法规的主题。飞机发动机还通过高空烟尘排放增加大气气溶胶水平，对长期全球气候变化和臭氧消耗产生影响。减轻烟灰形成的负面影响将改善社会中个人的福祉。除了&amp；#8232；拟议的燃烧相关技术研究的影响，将在教学和推广活动中产生溢出效应。Graduate& # 8232;学生们将接受培训，其中的一些内容可以由本科生来完成，也可以由高中高年级的学生来完成。这些活动是培养多样化、具有全球竞争力的STEM（科学、技术、工程和数学）劳动力的关键组成部分。对实际系统中烟灰形成的基本理解仍然是一个艰巨的挑战，而实验室火焰是取得进展的最佳环境。本研究的现实目的是研究有利于烟尘形成条件下层流火焰的结构。它需要表征温度，气体种类，包括煤烟前体和生长种类，以及煤烟性质，包括体积派别，聚集形态和火焰中的光学性质。提案代表了[amp；#8232;]在燃烧的环境足迹方面具有潜在变革性影响的全面努力。条件的选择，使烟灰的形成是高度控制通过使用合适的燃料惰性组合，以方便探测&amp；#8232；通过侵入式和非侵入式技术对火焰结构进行分析。该方法是实验性和计算性的。这项研究的结果将被传播&amp；#8232；在技术会议和同行评议的文章中。此外，数据集将在网络上提供，以方便研究人员进行后续建模。

1403224Long, Marshall B.Title: Experimental and Computational Study of Soot Morphology and Optical Characteristics for Improved Soot ModelingCombustion-generated soot particulates from land-based power sources pose a significant health risk and have been the subject of stringent regulations. The aircraft engine also contributes to atmospheric aerosol levels via high altitude soot emissions with impact on long term global climate change and ozone depletion. Mitigation of the negative aspects of soot formation will lead to improved well-being of individuals in society. In addition to
the impact of the proposed research in combustion-related technologies, there will be a spillover in teaching and outreach activities. Graduate
students will be trained and some aspects of the proposed work can be tackled by undergraduate students and possibly, upper level high school students. These activities are key components in the development of a diverse, globally competitive STEM (science, technology, engineering, and mathematics) workforce.A fundamental understanding of soot formation in practical systems remains a daunting challenge and laboratory flames are the best setting in which to make progress. The proposed research has the realistic objective of examining the structure of laminar flames under conditions favorable to soot formation. It entails the characterization of temperature, gas species, including soot precursors and growth species, and soot properties including volume faction, aggregate morphology, and optical properties in flames. The proposal represents
a comprehensive effort with potentially transformative impact in the context of the environmental footprint of combustion. Conditions are chosen so that the formation of soot is highly controlled by using suitable fuel-inert combinations to facilitate probing
of the flame structure by both intrusive and nonintrusive techniques. The approach is both experimental and computational. Results of this research will be disseminated
at technical meetings and in peer-reviewed articles. Furthermore, data sets will be made available on the web to allow convenient access to researchers for subsequent modeling.