Fundamental investigations with respect to turbulent flows through porous media

多孔介质湍流的基础研究

• 批准号: 262377115
• 负责人: Professor Dr.-Ing. Heinz Herwig
• 金额: --
• 依托单位: North Carolina State University Raleigh
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/262377115?language=en
• 关键词: Fundamental; investigations; respect; turbulent; flows

In this fundamental study about turbulent flows through porous media the question will be answered whether in such flows there are turbulence structures with scales larger than the typical pore scales. This question is un-answered until now, controversially discussed and very important with respect to an adequate turbulence modelling. In order to avoid all kinds of circular argument by using turbulence models, results will be gained by direct numerical simulations (DNS). For that purpose we introduce a carefully designed model-matrix which will be changed with respect to various geometrical parameters later in the project. Special emphasize is laid on the physical interpretation of the results by introducing new concepts of a pseudo-correlation and a representative volume of the turbulent flow.

在这项关于多孔介质湍流的基础研究中，将回答在这种流动中是否存在尺度大于典型孔隙尺度的湍流结构的问题。这个问题到目前为止还没有答案，存在争议，并且对于充分的湍流建模非常重要。为了避免使用湍流模型时出现的各种循环论证，将通过直接数值模拟（DNS）来获得结果。为此，我们引入了一个精心设计的模型矩阵，该矩阵将在项目后期根据各种几何参数进行更改。通过引入伪相关和湍流代表体积的新概念，特别强调结果的物理解释。

项目成果

A direct numerical simulation study on the possibility of macroscopic turbulence in porous media: Effects of different solid matrix geometries, solid boundaries, and two porosity scales

• DOI: 10.1063/1.4949549
• 发表时间: 2016-06
• 期刊: Physics of Fluids
• 影响因子: 4.6
• 作者: M. Uth;Yan Jin;A. Kuznetsov;H. Herwig

Natural Convection in a Two-Dimensional Cell Filled with a Porous Medium: A Direct Numerical Simulation Study

填充多孔介质的二维单元中的自然对流：直接数值模拟研究

• DOI: 10.1080/01457632.2018.1432083
• 发表时间: 2018
• 期刊: Heat Transfer Engineering
• 影响因子: 2.3
• 作者: P.U. Kränzien;Y. Jin
• 通讯作者: Y. Jin

Turbulence modeling for flows in wall bounded porous media: An analysis based on direct numerical simulations

壁面多孔介质流动的湍流建模：基于直接数值模拟的分析

• DOI: 10.1063/1.4979062
• 发表时间: 2017
• 期刊: Physics of Fluids
• 影响因子: 4.6
• 作者: Jin, Y.;Kuznetsov, A. V.
• 通讯作者: Kuznetsov, A. V.

Turbulent Forced Convection in Porous Media: A Direct Numerical Simulation Study

多孔介质中的湍流强制对流：直接数值模拟研究

• 发表时间: 2018
• 期刊: IHTC-16
• 作者: Gasow, S.;Kuznetsov, A.V.;Schlüter, M.;Jin, Y.
• 通讯作者: Jin, Y.

Numerical investigation of the possibility of macroscopic turbulence in porous media: a direct numerical simulation study

• DOI: 10.1017/jfm.2015.9
• 发表时间: 2015-02
• 期刊: Journal of Fluid Mechanics
• 影响因子: 3.7
• 作者: Yan Jin;M. Uth;Andrey V. Kuznetsov;Heinz Herwig