Deep Ocean Burning of Methane Hydrate

1333605 Sirignano一个巨大的甲烷仓库存在于大陆架边缘的甲烷水合物沉积物中，处于永久冻土状态，深度约一千米，甲烷和空气处于超临界压力，但水处于亚临界压力。氧气或空气可以被输送到水合物燃烧的深度，用于熔化和泵送或开采水合物的动力和热量。 将模拟甲烷水合物在深海条件下（水和燃料的高压）与氧气或空气燃烧。甲烷-水-空气混合物在高压下的氧化将在一个规范的配置中进行分析，该配置与一个平行的、单独资助的计划中的计划实验相匹配：分析氧气、富氧空气或空气中的燃烧和汽化水合物颗粒汽化和燃烧。大量的化学和热物理性质的不确定性将通过一个随机的框架，使用多项式混沌扩展方法进行分析。合作将与新的UCI深海动力科学实验室的实验团队进行。在能源和燃烧科学界，这项研究的两个开创性方面是研究深海条件下碳氢化合物与水（水合物或笼形物）的混合燃烧，以及使用随机框架来量化不确定性。研究生研究人员，包括代表性不足的群体，将被该计划的新奇性所吸引，并通过该内容接受教育。这项研究可以为Sirignano教授的成功著作的未来版本做出贡献。参与者将进行演讲，并与NSF资助的少数民族CAMP计划和UCI COSMOS高中外展计划的夏季科学计划合作。

1333605SirignanoA huge methane storehouse exists in methane hydrate sediments at the continental shelve edges in a permafrost state at depths of about a thousand meters at supercritical pressures for methane and air but subcritical for water. Oxygen or air can be delivered to depths for hydrate combustion for power and heat to melt and pump or to mine the hydrate. Methane hydrate burning with oxygen or air at the deep-ocean conditions (high pressures with water and fuel) will be simulated. Methane-water-air mixture oxidation at high pressures will be analyzed in a canonical configuration matching a planned experiment in a parallel, separately funded program: analysis of combustion and vaporization hydrate particle vaporization and combustion in oxygen, enriched air, or air. Substantial uncertainties about chemical and thermophysical properties will be analyzed through a stochastic framework, using the Polynomial Chaos Expansion approach. Collaborations will occur with the experimental team of the new UCI Deep Ocean Power Science Laboratory. Two pioneering aspects of this research within the energy and combustion science community are the study of combustion of hydrocarbons mixed with water (hydrates or clathrates) at deep ocean conditions and use of a stochastic framework to quantify the uncertainties. Graduate student researchers, including under-represented groups, will be attracted by the program novelty and educated through the substance. This research can contribute to future editions of Professor Sirignano's successful book. Participants will make presentations and work with the Summer Science program of the NSF-funded minority CAMP program and UCI COSMOS high-school-outreach program.