Novel subgrid-scale modelling for large-eddy simulation of turbulent flow and dispersion in urban environments

用于城市环境中湍流和扩散的大涡模拟的新型亚网格尺度建模

基本信息

  • 批准号:
    357453-2008
  • 负责人:
  • 金额:
    $ 1.66万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2012
  • 资助国家:
    加拿大
  • 起止时间:
    2012-01-01 至 2013-12-31
  • 项目状态:
    已结题

项目摘要

The environmental and toxicological impact of the downwind dispersion of contaminants released into the atmosphere, resulting from an accidental or deliberate release of a hazardous material into an urban environment, has become an increasingly important problem in recent years. The major challenge associated with this important problem involves obtaining a deeper understanding of the interaction of the dynamically evolving flow structures with the complex building geometry in an urban environment, as well as the coupling of the momentum, thermal energy and passive scalar transport processes. In contrast to conventional methods based on the Reynolds averaged Navier-Stokes (RANS) approach, the proposed research aims at developing novel dynamic linear and nonlinear subgrid-scale (SGS) stress and scalar-flux models for high-performance large-eddy simulation (LES) of urban flow and dispersion. In order to achieve the goal of this research, this proposal is divided into two parts. Part 1 focuses on the fundamental aspects of the LES methodology for prediction of turbulent transport of active and passive scalars; and Part 2 focuses on application of the advanced SGS modelling approaches developed in Part 1 for improved LES of turbulent transport of hazardous substances in complex urban environments. In order to validate the novel LES approaches developed in this research, the obtained numerical results will be compared with experimental and direct numerical simulation (DNS) data. It is anticipated that the proposed research will provide a systematic comparative study of the existing and proposed SGS stress and scalar-flux models; advance the methodology of LES for high-performance computing of urban flow and dispersion; and lead to a deeper physical understanding of the subgrid-scale motions and their interactions with the coherent flow structures within and above the urban canopy. It is also anticipated that the proposed research will provide an opportunity to train highly qualified personnel in areas related to mechanical and environmental engineering, advanced scientific computing, and defence science and technology.
近年来,由于意外或故意将有害物质释放到城市环境中而导致的释放到大气中的污染物的顺风扩散的环境和毒理学影响已成为日益重要的问题。与这一重要问题相关的主要挑战涉及获得更深入的了解动态演变的流动结构与复杂的建筑物几何形状在城市环境中的相互作用,以及耦合的动量,热能和被动标量传输过程。与基于雷诺平均Navier-Stokes(RANS)方法的传统方法相比,该研究旨在开发新的动态线性和非线性亚网格尺度(SGS)应力和标量通量模型,用于城市流动和扩散的高性能大涡模拟(LES)。为了达到本研究的目的,本研究分为两个部分。第1部分侧重于预测的主动和被动标量的湍流输送的LES方法的基本方面;和第2部分侧重于应用先进的SGS建模方法,在第1部分中开发的改进LES的湍流输送的危险物质在复杂的城市环境。为了验证新的LES方法在这项研究中开发的,得到的数值结果将与实验和直接数值模拟(DNS)数据进行比较。预计拟议中的研究将提供一个系统的比较研究现有的和拟议的SGS应力和标量通量模型;推进LES的方法,高性能计算的城市流量和分散;并导致更深入的物理理解的亚网格尺度运动及其相互作用的相干流结构内和上方的城市冠层。预计拟议的研究还将提供机会,在机械和环境工程、先进科学计算以及国防科学和技术等领域培训高素质人才。

项目成果

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Wang, BingChen其他文献

Wang, BingChen的其他文献

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{{ truncateString('Wang, BingChen', 18)}}的其他基金

Study of Dual-Jet Interference and Scalar Mixing using Direct Numerical and Large-Eddy Simulations
使用直接数值和大涡模拟研究双射流干涉和标量混合
  • 批准号:
    RGPIN-2019-06735
  • 财政年份:
    2022
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual
Study of Dual-Jet Interference and Scalar Mixing using Direct Numerical and Large-Eddy Simulations
使用直接数值和大涡模拟研究双射流干涉和标量混合
  • 批准号:
    RGPIN-2019-06735
  • 财政年份:
    2021
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual
Study of Dual-Jet Interference and Scalar Mixing using Direct Numerical and Large-Eddy Simulations
使用直接数值和大涡模拟研究双射流干涉和标量混合
  • 批准号:
    RGPIN-2019-06735
  • 财政年份:
    2020
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual
Study of Dual-Jet Interference and Scalar Mixing using Direct Numerical and Large-Eddy Simulations
使用直接数值和大涡模拟研究双射流干涉和标量混合
  • 批准号:
    RGPIN-2019-06735
  • 财政年份:
    2019
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual
Large-Eddy Simulation of Turbulent Scalar Transport Processes in Smooth and Rough Wall Boundary Layers
光滑和粗糙壁边界层中湍流标量输运过程的大涡模拟
  • 批准号:
    357453-2013
  • 财政年份:
    2018
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual
Large-Eddy Simulation of Turbulent Scalar Transport Processes in Smooth and Rough Wall Boundary Layers
光滑和粗糙壁边界层中湍流标量输运过程的大涡模拟
  • 批准号:
    357453-2013
  • 财政年份:
    2015
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual
Large-Eddy Simulation of Turbulent Scalar Transport Processes in Smooth and Rough Wall Boundary Layers
光滑和粗糙壁边界层中湍流标量输运过程的大涡模拟
  • 批准号:
    357453-2013
  • 财政年份:
    2014
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual
Large-Eddy Simulation of Turbulent Scalar Transport Processes in Smooth and Rough Wall Boundary Layers
光滑和粗糙壁边界层中湍流标量输运过程的大涡模拟
  • 批准号:
    357453-2013
  • 财政年份:
    2013
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual
Advance numerical simulation system for urban atmospheric hazard prediction and assessment
先进的城市大气灾害预测与评估数值模拟系统
  • 批准号:
    386895-2009
  • 财政年份:
    2012
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Collaborative Research and Development Grants
Novel subgrid-scale modelling for large-eddy simulation of turbulent flow and dispersion in urban environments
用于城市环境中湍流和扩散的大涡模拟的新型亚网格尺度建模
  • 批准号:
    357453-2008
  • 财政年份:
    2011
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Discovery Grants Program - Individual

相似海外基金

LEAPS-MPS: Exploring various subgrid scale turbulence models via convergence analysis, data assimilation and deep learning
LEAPS-MPS:通过收敛分析、数据同化和深度学习探索各种亚网格尺度湍流模型
  • 批准号:
    2316894
  • 财政年份:
    2023
  • 资助金额:
    $ 1.66万
  • 项目类别:
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Subgrid-Scale Modeling for Large Eddy Simulation of Soot Evolution in Turbulent Reacting Multiphase Flows to Account for Sensitivity to Fuel Composition and Properties
用于湍流反应多相流中烟灰演化的大涡模拟的亚网格尺度建模,以考虑对燃料成分和性能的敏感性
  • 批准号:
    517037-2018
  • 财政年份:
    2020
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Postgraduate Scholarships - Doctoral
Subgrid-Scale Modeling for Large Eddy Simulation of Soot Evolution in Turbulent Reacting Multiphase Flows to Account for Sensitivity to Fuel Composition and Properties
用于湍流反应多相流中烟灰演化的大涡模拟的亚网格尺度建模,以考虑对燃料成分和性能的敏感性
  • 批准号:
    517037-2018
  • 财政年份:
    2019
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Postgraduate Scholarships - Doctoral
RII Track-4: Turbulence Effects on Cloud Microphysical Processes: Development and Testing of Subgrid-Scale Parameterizations for Large Eddy Simulation
RII Track-4:湍流对云微物理过程的影响:大涡模拟的亚网格尺度参数化的开发和测试
  • 批准号:
    1929124
  • 财政年份:
    2019
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Standard Grant
Subgrid-Scale Modeling for Large Eddy Simulation of Soot Evolution in Turbulent Reacting Multiphase Flows to Account for Sensitivity to Fuel Composition and Properties
用于湍流反应多相流中烟灰演化的大涡模拟的亚网格尺度建模,以考虑对燃料成分和性能的敏感性
  • 批准号:
    517037-2018
  • 财政年份:
    2018
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Postgraduate Scholarships - Doctoral
PREEVENTS Track 2: Collaborative Research: Subgrid-Scale Corrections to Increase the Accuracy and Efficiency of Storm Surge Models
预防事件轨道 2:协作研究:亚网格尺度修正以提高风暴潮模型的准确性和效率
  • 批准号:
    1664037
  • 财政年份:
    2017
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Continuing Grant
PREEVENTS Track 2: Collaborative Research: Subgrid-Scale Corrections to Increase the Accuracy and Efficiency of Storm Surge Models
预防事件轨道 2:协作研究:亚网格尺度修正以提高风暴潮模型的准确性和效率
  • 批准号:
    1664040
  • 财政年份:
    2017
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Continuing Grant
CDS&E: Appraisal of Subgrid Scale Closures in Reacting Turbulence via DNS Big Data
CDS
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    1609120
  • 财政年份:
    2016
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    $ 1.66万
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Collaborative Research: A Langevin Subgrid Scale Closure and Discontinuous Galerkin Exascale Large Eddy Simulation of Complex Turbulent Flows
合作研究:复杂湍流的 Langevin 亚网格尺度闭合和不连续 Galerkin 百亿亿次大涡模拟
  • 批准号:
    1603131
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  • 项目类别:
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Collaborative Research: A Langevin Subgrid Scale Closure and Discontinuous Galerkin Exascale Large Eddy Simulation of Complex Turbulent Flows
合作研究:复杂湍流的 Langevin 亚网格尺度闭合和不连续 Galerkin 百亿亿次大涡模拟
  • 批准号:
    1603589
  • 财政年份:
    2016
  • 资助金额:
    $ 1.66万
  • 项目类别:
    Standard Grant
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