| 项目编号: | 1403403
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| 项目名称: | Simulation and modeling of soot formation and transport in turbulent flames |
| 作者: | David Lignell
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| 承担单位: | Brigham Young University
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| 批准年: | 2013
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| 开始日期: | 2014-09-01
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| 结束日期: | 2018-08-31
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| 资助金额: | USD205213
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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: | soot formation
; flame
; only simulation approach
; direct numerical simulation
; dns
; les simulation
; well-characterized experimental jet flame
; simulation code
; subgrid soot model
; large eddy simulation
; engineering simulation
; 1403403lignellsoot emission
; fine-scale information
; soot transport model
; fundamental soot-flame-turbulence-radiation interaction
; practical flame
; non-trivial flame interaction
; consistent soot model
; soot form
; soot-flame interaction
; turbulent soot modeling
; odt
; simulation approach
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| 英文摘要: | 1403403
Lignell
Soot emission from flames is a pollutant, a health hazard, and affects heat transfer. Soot formation is a challenging problem that involves non-trivial flame interactions over a wide range of conditions in their size and time. Efforts are focused on how soot forms in practical flames that are usually embedded in turbulence, such as those in jet engines and furnaces. Computer-based models will be developed and their validation will be carried out. Research advances will be communicated through publication, presentation, and on the web. Graduate and undergraduate students will be mentored and trained in computational combustion. Elementary school students will be introduced to what engineers do through flame and flow demonstrations that get students to look carefully at how combustion drives society. High school seniors will be mentored by undergraduate students as they participate in a junior-level fluid mechanics course project where groups define a problem, gather and analyze data, and present results.
This work will address problems in turbulent soot modeling by applying three simulation approaches: one-dimensional turbulence (ODT), direct numerical simulation (DNS), and large eddy simulation (LES), in a single study to understand soot formation and transport, and to validate models used in engineering simulations. Four tasks are considered: (1) implementing consistent soot models into simulation codes; (2) performing ODT, DNS, and LES simulations to understand soot-flame interactions; (3) evaluating subgrid soot models; and (4) educational outreach to elementary and high school students. However, the only simulation approach that resolves all scales is DNS, which is prohibitively expensive for practical flows. For DNS and LES, models are needed below certain scales, because fine-scale information is not available. This work will use ODT, DNS, and LES to understand fundamental soot-flame-turbulence-radiation interactions, and quantify soot transport models. ODT and LES will be compared to well-characterized experimental jet flames. The strengths of these models, used together, complement their weaknesses and provide guidance as to where research needed. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95895
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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: | |
David Lignell. Simulation and modeling of soot formation and transport in turbulent flames. 2013-01-01.
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