Technology Development for Next Generation of Gas Turbine Engines: Turbulent Combustion Science and Thermoacoustics

下一代燃气轮机发动机技术开发：湍流燃烧科学和热声学

• 批准号: RGPIN-2018-04554
• 负责人: Kheirkhah, Sina
• 金额: $ 1.97万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=761764
• 关键词: Technology; Development; Next; Generation; Gas

Aircraft and electric power generation industries contributed to about $70B CAD revenue for the government of Canada in 2016. Today, these industries face two main challenges relating to their use of gas turbine engines. First, they operate with fossil fuels which are limited natural resources and need to be replaced by future alternative fuels (e.g. non-edible biomass). Current knowledge related to both fossil and alternative fuels burning rates relevant to gas turbine engine conditions is limited, and this limitation has hindered our capability of developing the next generation of gas turbine engines. Both knowledge and technology need to be developed to estimate and enhance the burning rate of fossil and future alternative fuels in gas turbine engines.The second challenge these industries face is the emission of pollutants, e.g. nitrogen oxides and particulate matter. These partly contributed to about 722 mega tonnes of greenhouse gas emission in 2016; and, through international agreements, Canada has committed to reduce this emission by about 80% in thirty years. Today, reducing emissions of nitrogen oxides and particulate matter has been made possible by utilizing fuel injection technology that allows for enhanced fuel and air premixing prior to combustion. However, premixed flames are prone to thermoacoustic oscillations (which are detrimental to engine operation) and technology that allows for mitigation of these oscillations needs to be developed.The proposed research program will pursue two parallel fronts: (I) enhancing burning rate of premixed flames (for both gaseous as well as liquid fossil/alternative fuels), and (II) mitigating thermoacoustic oscillations. For gaseous fuels, dynamics of intense turbulent flow and premixed flames interaction (which is relevant to engine applications) will be first investigated. The generated knowledge will then be used to develop a novel flow control apparatus that allows for enhanced gaseous fuel burning rate. This apparatus will be integrated with a lean premixing and prevaporizing unit to study burning rate of both fossil and alternative liquid fuels. Models for the corresponding burning rate will be developed and transferred to the relevant industry. On the second front, dynamics of thermoacoustic oscillations in spray flames will be first investigated. Then, this study will be complemented by development of a novel fuel injection technology that allows for mitigation of thermoacoustic oscillations.The proposed program will generate knowledge and technology required for development of future gas turbines that feature enhanced fuel burning rate, reduced greenhouse gas emission, and improved engine life-time. These will save Canadian natural resources, help the government of Canada comply with its international agreements related to pollutants emission, decelerate global warming, and enhance aircraft engines safety.

飞机和发电行业在2016年为加拿大政府贡献了约70B加元的收入。今天，这些行业面临着与使用燃气轮机发动机有关的两个主要挑战。首先，它们用化石燃料有限的自然资源运行，需要用未来的替代燃料（例如不可用的生物质）代替。当前与化石和替代燃料燃烧速率相关的知识与燃气轮机发动机条件相关，这一限制阻碍了我们开发下一代燃气轮机发动机的能力。知识和技术都需要开发以估算和提高燃气轮机发动机中化石和未来替代燃料的燃烧速率。这些行业面临的第二个挑战是污染物的排放，例如氮氧化物和颗粒物。这些部分贡献了2016年约722吨温室气体排放；而且，通过国际协议，加拿大承诺在三十年来将这一排放量减少约80％。如今，通过利用燃料注入技术，可以减少氮氧化物和颗粒物的排放，从而使燃料和空气在燃烧之前增强。然而，预混合火焰容易容易进行热声振荡（对发动机操作有害）和技术，需要开发缓解这些振荡的技术。拟议的研究计划将追求两个平行的阵线：（i）增强燃烧速率的预制火焰燃烧速率（对于气体和液体液体/液体/替代品种和替代品种）和替代品（II）和II型（II），MIT（II）MIT（II）MIT（II）MIT（II）MIT（II）。对于气态燃料，将首先研究强烈的湍流和预混合火焰相互作用的动力学（与发动机应用相关）。然后，生成的知识将用于开发一种新型的流动控制设备，该设备可提高气态燃料燃烧速率。该设备将与瘦肉的预混合和前置单元集成，以研究化石和替代液体燃料的燃烧速率。相应燃烧率的模型将开发并转移到相关行业。在第二个方面，将首先研究喷射火焰中热声振荡的动力学。然后，这项研究将通过开发一种新型的燃油喷射技术来补充，该技术允许减轻热声振荡。拟议的计划将产生开发未来燃气轮机所需的知识和技术，这些燃气轮机具有增强的燃油燃烧速率，减少温室气体排放和提高发动机的寿命。这些将为加拿大自然资源提供，帮助加拿大政府遵守其与污染物排放有关的国际协议，减速全球变暖，并增强飞机发动机的安全。