BRIGE: Ignition, Burning Rate, Chemistry and Transport Properties of Alternative Fuels

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。提案编号：0927243本提案针对替代燃料这一新兴领域，对经济、交通和发电系统具有重要意义。在我们的全球化、准时经济中，美国的竞争力和创新需要一种负担得起的、多样化的、稳定的、环保的燃料供应。在努力提高燃油效率和减少发电系统对环境的影响的同时，随着我们迈向新世纪，市场上正在出现一种新的、多样化的燃料来源。先进能量转换系统的可靠设计和优化将依赖于对燃料的化学和物理特性的充分理解。下一代燃料很可能与目前的燃料大不相同。这些燃料将从油砂、油页岩、煤以及各种生物材料等替代来源生产，所有这些都与目前的石油基燃料有根本不同。新的替代燃料可能会更加复杂，如含氧化合物、环烷和烯烃等化合物的含量会增加，而这些化合物的化学性质和燃烧动力学尚不清楚。迫切需要了解替代燃料的化学和物理特性。本提案的总体目标是通过结合实验和模型研究来研究替代燃料和替代燃料的点火、燃烧速率、化学和分子运输。目标将通过广泛的实验和建模程序来实现，其中包括：(1)测量火焰速度，最小点火能量，以及在高温和高压下稀释的替代和替代燃料-空气混合物的马克斯坦数，以及广泛的燃料等效比；(2)平面层流预混火焰的数值模拟，包括复杂化学动力学和分子输运；(3)数值模拟了随时间变化的火焰传播，研究了燃料刘易斯数和拉伸对火焰动力学的影响；(4)利用激光诱导火花点火技术研究超贫替代燃料-空气混合物的点火行为。知识价值：拟议的研究具有以下潜力：(1)提供一个基本的实验数据库，涵盖我们知之甚少的替代燃料和替代燃料的验证动力学和模型的广泛参数；(2)提高我们对燃料化学和分子传递对火焰特性影响的认识；(3)提高我们对超稀薄替代燃料-空气混合物激光诱导等离子体点火行为的认识。研究活动是对PI的补充？该计划的重点是：(1)开发能源新课程；(2)发展高中学生研究计划，重点是吸引高中女生学习工程和科学；(3)通过与普渡大学女性工程项目合作，招收女性研究生，并为女性本科生提供研究机会。这项研究的广泛影响是显著的。这些结果将使人们对替代燃料和替代燃料的点火、燃烧、化学和运输特性有一个基本的了解，这些燃料是一种复杂的、未经测试的燃料。研究结果将提高我们预测设计的建模和仿真能力，从而加快下一代清洁、燃料灵活和高效能源转换系统的开发。研究结果还将有助于将新的替代燃料资源整合到发电设备中，减少我们对外国石油的依赖。其他更广泛影响的贡献与教育活动有关，这些活动的目的是使广泛的个人群体，特别是妇女受益。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."PI: Qiao, LiProposal Number: 0927243This proposal targets on an emerging area of alternative fuels that have great significance for theeconomy, transportation and power generation systems. In our global, just-in-time economy, American competitiveness and innovation require an affordable, diverse, stable, and environmentally acceptable fuel supply. Simultaneous with efforts to increase the fuel efficiency and decrease the environmental impact of power generation systems, a new, diversified fuel source future is emerging in the marketplace as we move forward into the new century. Reliable design and optimization of advanced energy conversion systems will rely on a fully understanding of the chemical and physical properties of fuels. The next generation fuels are likely to be much different from current fuels. These fuels will be produced from alternative sources such as oil sands, oil shale, coal, as well as from a variety of biomaterials, all of which are fundamentally different from current petroleum-based fuels. New alternative fuels can be even more complex with increased fractions of compounds such as oxygenates napthenes and olefins, whose chemical properties and combustion kinetics are poorly known. There is an urgent need to understand the chemical and physical properties of alternative fuels.The overall objective of this proposal is to study ignition, burning rate, chemistry, and moleculartransport of surrogate and alternative fuels by a combined experimental and modeling study. Theobjectives will be pursued through an extensive experimental and modeling program that will include to: (1) Measure flame speed, minimum ignition energy, and Markstein number of surrogate and alternative fuel-air mixtures at elevated temperatures and pressures, with dilution, and for a wide range of fuelequivalence ratios; (2) Numerically simulate the planar laminar premixed flames, including complex chemical kinetics and molecular transport; (3) Numerically simulate the time-dependent flame propagation and study the effect of fuel Lewis number and stretch on flame dynamics; (4) Investigate the ignition behavior of extra lean alternative fuel-air mixtures using laser-induced spark ignition.Intellectual merit: The proposed research has the potential to (1) Provide a fundamental experimental database covering a wide range of parameters for validation kinetics and models ofsurrogate and alternative fuels that we have little knowledge of; (2) Improve our understanding of the effects of fuel chemistry and molecular transport on flame properties; (3) Improve our understanding of the ignition behavior of extra-lean alternative fuel-air mixtures by laser-induced plasmas. The research activities complement the PI?s education plan which is focused at: (1) Developing new courses in energy; (2) Developing high-school student research program with an emphasis of attracting high-school girls to engineering and science; (3) Recruiting women graduate students and providing research opportunities for women undergraduate students by collaborating with the Women in Engineering Program of Purdue University.The broader impact of the research proposed is significant. The results will lead to a fundamentalunderstanding of the ignition, burning, chemistry and transport properties of surrogate and alternative fuels, a complex and untested range of fuels. The results will improve our modeling and simulation capability for predictive design and thus will speed the development of the next generation of clean, fuelflexible and efficient energy conversion systems. The results will also assist in integrating new alternative fuel resources into the power generation devices, reducing our dependence on foreign oil. Additional broader impact contributions are associated with the educational activities, which are designed to benefit a broad group of individuals, especially women.