| 项目编号: | 1502477
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| 项目名称: | Collaborative Research: High-speed Imaging Guided Large Eddy Simulation (LES) Model Development for Turbulent Flames |
| 作者: | Venkatramanan Raman
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| 承担单位: | University of Michigan Ann Arbor
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| 批准年: | 2013
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| 开始日期: | 2014-08-01
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| 结束日期: | 2017-05-31
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| 资助金额: | USD104999
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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: | flame stabilization
; les modeling approach
; computer model
; soot modeling
; high speed imaging guided large eddy simulation model development
; current les model
; cfd model
; high-speed imaging datum
; 1403969/1403901meyer/ramancollaborative research
; research team
; large eddy simulation
; les model
; research effort
; turbulent non-premixed flame
; undergraduate researcher
; high-speed laser-based imaging
; practical flame
; predictive computational modeling
; modeling tool
; turbulent flamesthe
; fire simulation
; large-scale direct numerical simulation
|
| 英文摘要: | 1403969/1403901
Meyer/Raman
Collaborative Research: High Speed Imaging Guided Large Eddy Simulation Model Development for Turbulent Flames
The proposed research effort is to develop computer models for practical flames that are usually embedded in turbulent flows such as those in aircraft engines and power generation plants. The improved modeling tools developed here can be extended for use in many other fields such as soot modeling, fire simulations, geophysical fluid dynamics, and environmental sciences. The principal investigators will furthermore continue their practice of mentoring a diverse group of high-school and undergraduate researchers to attract and prepare them for graduate careers in science and engineering.
A comprehensive understanding of flame stabilization is critical for clean and efficient combustion in future power, propulsion, and transportation systems. In this context, the large eddy simulation (LES) methodology provides a suitable framework for modeling flame stabilization and related combustion dynamics. However, current LES models are far from ideal and introduce simplifications that potentially alter the temporal dynamics in the simulations. Here, the LES modeling approach will be reformulated to introduce temporal statistics and a non-equilibrium dissipation rate. Simultaneously, high-speed imaging data will be combined with very large-scale direct numerical simulations (DNS) to validate central assumptions in the statistical data and LES model. An industry partner will collaborate with the research team to ensure the relevance of models and experimental data. Educational and outreach components will aid the transfer of new knowledge and technologies to the classroom and industry. The intellectual merit of the proposed work lies in providing a comprehensive understanding of flame stabilization beyond typical one-point, ensemble statistical averages and will enable the development of a robust and predictive computational modeling. It will take advantage of recent advances in high-speed laser-based imaging and DNS to expand the range of applicability of the LES modeling approach. The CFD models and experimental data developed here will be made accessible to the gas turbine industry and the well-established international working group on turbulent non-premixed flames (TNF). |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96146
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Venkatramanan Raman. Collaborative Research: High-speed Imaging Guided Large Eddy Simulation (LES) Model Development for Turbulent Flames. 2013-01-01.
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