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.

在这项有关通过多孔介质湍流流动的基本研究中，将回答问题，在这样的流中，是否有比典型孔径大的湍流结构。到目前为止，这个问题尚未解决，在适当的湍流建模方面有争议，非常重要。为了避免使用湍流模型避免各种循环参数，将通过直接数值模拟（DNS）获得结果。为此，我们引入了一个经过精心设计的型号矩阵，该模型将在项目以后的各种几何参数方面进行更改。特别强调的是，通过引入伪相关的新概念和湍流的代表性量，对结果的物理解释进行了解释。

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