Deep Ocean Burning of Methane Hydrate

1333605 siignanoa巨大的甲烷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1000米，甲烷和空气的压力为超临界，而水的压力为亚临界。氧气或空气可以被输送到深海中进行水合物燃烧，获得能量和热量来熔化和泵送或开采水合物。将模拟在深海条件下（水和燃料的高压）与氧气或空气燃烧的甲烷水合物。高压下的甲烷-水-空气混合物氧化将在一个标准配置中进行分析，该配置与一个平行的计划实验相匹配，单独资助的项目：分析燃烧和汽化水合物颗粒在氧气、富氧空气或空气中的汽化和燃烧。化学和热物理性质的大量不确定性将通过随机框架，使用多项式混沌展开方法进行分析。合作将发生与新的UCI深海动力科学实验室的实验团队。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）混合的燃烧，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，将被项目的新颖性所吸引，并通过内容进行教育。这项研究可以为siignano教授这本成功的书的未来版本做出贡献。参与者将在nsf资助的少数民族CAMP项目和UCI COSMOS高中推广项目的夏季科学项目中进行演讲和工作。

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.