CAREER: Formation and Evolution of Soot Particles During Turbulent Nonpremixed Combustion

职业：湍流非预混燃烧过程中烟灰颗粒的形成和演化

• 批准号: 9876475
• 负责人: Umit Koylu
• 金额: --
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-04-01 至 2000-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9876475&HistoricalAwards=false
• 关键词: CAREER; Formation; Evolution; Soot; Particles

The objective of this research is to provide an understanding of the evolution of soot particles in turbulent nonpremixed flames, specifically how soot precursor particles are formed from high-molecular-weight compounds. The aggregation kinetics of super-large aggregates in heavily sooting flames is explored. The detailed nanostructure of soot particles is analyzed to help identify the source of the soot. Two fuels are used: methane for studies of soot precursor particles and acetylene for studies of high concentrations and large aggregates. Experimental techniques include angular light scattering/extinction and thermophoretic sampling. The effect of turbulence on the soot field is evaluated by analysis of the scattered signal. Measurements of temperature, velocity, and radiative heat loss are also made.A broad range of educational activities is included consisting of development of courses and curricula, active participation of undergraduates in research, encouragement of members of underrepresented groups, involvement of industrial practice, and bringing computer technology and the interest to the classroom and instructional laboratory.

本研究的目的是提供一个了解的演变的烟尘颗粒在湍流非预混火焰，特别是如何形成的烟尘前体颗粒的高分子量化合物。探讨了严重煤烟火焰中超大聚集体的聚集动力学。分析烟灰颗粒的详细纳米结构以帮助识别烟灰的来源。使用两种燃料：甲烷用于研究烟尘前体颗粒，乙炔用于研究高浓度和大聚集体。实验技术包括角光散射/消光和热泳采样。通过对散射信号的分析，评估了湍流对烟尘场的影响。温度，速度和辐射热损失的测量也made. A广泛的教育活动包括课程和课程的开发，本科生积极参与研究，鼓励代表性不足的群体的成员，参与工业实践，并将计算机技术和兴趣带到教室和教学实验室。