| 项目编号: | 1437857
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| 项目名称: | Coherent Structures and Mixing in Rotating and Stratified Flows |
| 作者: | Susan Kurien
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| 承担单位: | New Mexico Consortium
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| 批准年: | 2013
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| 开始日期: | 2014-10-01
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| 结束日期: | 2018-09-30
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| 资助金额: | USD293292
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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: | turbulent flow
; infrastructure decision
; work
; geophysical flow
; atmospheric flow
; coherent structure
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| 英文摘要: | This is a proposal to explore and model the structure of turbulence that leads to mixing in turbulent flows. The work will focus on cases of anisotropic turbulence, an area that has not been explored as much as other turbulent flows, but is of the utmost importance in engineering and in the environment. The research proposed in this work covers computations at a multitude of scales, even scales relevant to geophysical flows, allowing the results to be useful not only because of the fundamental aspect of turbulent mixing, but also due to applicability in practical situations. Our climate, agriculture, and commerce are affected by turbulence in the atmosphere and in the ocean. This work could lead to more accurate models for ocean and atmospheric flows with impact on policy, economic and infrastructure decision. The data that will be generated will become available to the scientific community through the established Johns Hopkins University Turbulence Database. In addition, graduate students will participate in this project.
The goal of the proposed study is to investigate rotation and stratification effects and the scales at which different mixing dynamics are active in a turbulent flow. The PI proposes to use state-of-the-art direct numerical simulations (DNS) code and to run several large calculations using computational resources that are quite impressive (available through allocations from the DOE Office of Science). The proposed work aims to advance our fundamental understanding of turbulent mixing by, 1) characterizing and quantifying the instrinsic scales of coherent structures formed in canonical rotating and stratified flows using statistical measures and, 2) quantifying the relationship of the scales thus recovered to the statistics and the instrinsic scales of mixing. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95403
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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: | |
Susan Kurien. Coherent Structures and Mixing in Rotating and Stratified Flows. 2013-01-01.
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