Direct Numerical Simulation and Modeling of Turbulent Convection in Porous Media

多孔介质中湍流对流的直接数值模拟和建模

• 批准号: 408356608
• 负责人: Privatdozent Dr.-Ing. Yan Jin, Ph.D.
• 金额: --
• 依托单位: Institut für Mehrphasenströmungen V-5
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/408356608?language=en
• 关键词: Direct; Numerical; Simulation; Modeling; Turbulent

Convection in porous media is an often observed phenomenon in everyday life and also an important process in industry as well. Turbulent natural and mixed convections in porous media are particularly important in some emerging industries, e.g., long term storage of CO2 in deep saline aquifers and thermal energy storage. However, the effect of turbulence on convection in porous media is very complicated and its physics is still not clear. Significant simplifications and strong assumptions have been made in the macroscopic models, causing considerable model errors. In the purposed project, the turbulent convection in porous media will be investigated with microscopic direct numerical simulation (MIC-DNS) methods. A more accurate macroscopic model will be developed for calculating turbulent convection in porous media. The developed model will be validated with our DNS results.

多孔介质中的对流是日常生活中经常观察到的现象，也是工业中的一个重要过程。多孔介质中的湍流自然对流和混合对流在一些新兴产业中尤其重要，例如深层盐水层中二氧化碳的长期储存和热能储存。然而，多孔介质中湍流对对流的影响非常复杂，其物理原理仍不清楚。宏观模型进行了显着的简化和强假设，导致了相当大的模型误差。在该项目中，将采用微观直接数值模拟（MIC-DNS）方法研究多孔介质中的湍流对流。将开发更准确的宏观模型来计算多孔介质中的湍流对流。开发的模型将使用我们的 DNS 结果进行验证。