| 项目编号: | 1705649
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| 项目名称: | GOALI: Dynamics of Reacting Jets in Cross-Flow |
| 作者: | Tim Lieuwen
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| 承担单位: | Georgia Tech Research Corporation
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| 批准年: | 2017
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| 开始日期: | 2017-07-01
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| 结束日期: | 2020-06-30
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| 资助金额: | 270000
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
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| 英文关键词: | jet
; crossflow
; jet-in-crossflow
; jet-in-crossflow configuration
; flow
; non-reacting flow
; high temperature crossflow
; basic topological flow picture
; hydrodynamic stability
; strained flow
; new flow dynamics
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| 英文摘要: | Gas turbine power plants are a major enabler for both land-based power generation and air-breathing aircraft propulsion. These power plants consist of several components, at the heart of which is the combustor. In a combustor, rapid mixing of air and fuel is required for efficient combustion and cooling of combustor parts. This critical feature constitutes the use of the fluid dynamic benefits of a jet-in-crossflow configuration. In this configuration, a jet is injected in a perpendicular direction to a crossflow, resulting in complex fluid mechanic characteristics that can be leveraged for the above applications. Thus, the broad focus on this project is the fundamental physics in the fluid mechanics and combustion of a jet-in-crossflow configuration. Understanding these physics is critical to the design of the next generation clean and efficient gas turbines for the U.S. aerospace and power generation industries.
The specific objective of the proposed work is to improve the understanding of the dynamics of reacting jets in crossflow. Jets in crossflow are an important fundamental problem that incorporates partially premixed flame propagation in highly strained flows, non-premixed flame autoignition, edge flame propagation, and hydrodynamic stability in reacting flows. It is an important canonical problem where chemical kinetics and hydrodynamic stability of the flow are tightly coupled. This project will focus on two major thrusts. The first thrust will address the question of the impacts of exothermicity and kinetics on the topology and hydrodynamic stability. In particular it will address the question of whether the basic topological flow picture that has been developed in non-reacting flows remain, perhaps with some quantitative adjustments, or whether and when fundamentally new flow dynamics emerge. The second thrust will address flame stabilization processes. This focuses on elucidating the relative roles of flame propagation and autoignition on flame stabilization and spreading in high temperature crossflows. This work will utilize a suite of high frequency planar laser diagnostics at high frame rates. In addition, the research team will also leverage various on-campus programs to promote STEM education and outreach activities. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/89932
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Tim Lieuwen. GOALI: Dynamics of Reacting Jets in Cross-Flow. 2017-01-01.
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