SFB 1313: Interface-Driven Multi-Field Processes in Porous Media - Flow, Transport and Deformation -

多孔介质中的流动、输运和变形是高度耦合的过程，强烈依赖于物理、化学和生物现象之间的非线性相互作用。根据目前的技术状况，对这些过程的分析主要在由多孔介质的几何、结构和非均质性确定的各种特征空间和时间尺度上进行。然而，人们越来越认识到，多孔介质系统的相关整体功能是由各种类型的流体-流体和流体-固体界面的特征、几何和动力学决定的，这些界面不仅发生在特征尺度上，而且最明显地发生在较小的尺度上。因此，许多可用的模型概念不能充分地捕捉和预测实际的系统行为。缺乏预测能力的例子包括多相流的扩展达西定律，当前的多孔介质蒸发模型，以及现有的多孔介质中裂缝扩展模型。该合作研究中心(CRC)的研究旨在获得关于界面如何影响多孔介质系统中的流动、传输和变形过程的迫切需要的基本理解。这涉及到以下具有挑战性的任务：量化多孔介质系统中流体-流体和流体-固体界面的动力学如何受到孔隙几何、非均质性和裂缝的影响，以及开发描述多孔介质系统的有效行为的数学和计算模型，包括在小得多的空间尺度上发生的界面的影响。为了将研究工作集中在《儿童权利公约》内，确定了三个项目领域，它们代表了多孔性介质中广泛的界面驱动过程。项目领域A涉及耦合的自由流动/多孔介质系统的复杂的依赖于界面的交换过程(质量、动量和能量)。B项目区处理充满流体的多孔介质中的复杂破裂和损伤过程，C项目区处理由于流体和固体相之间的界面上的相互作用过程而引起的孔隙空间变化。这些项目领域的工作涉及一项协调的研究工作，将数学和计算模型开发与先进的多尺度成像实验相结合。项目领域A到C面临许多概念挑战，例如模拟和实验结果的可视化、代码和模型验证基准的定义以及不同多物理和多尺度模拟环境的耦合。这些主题在项目领域D中讨论。最后，为中央事务确定了一个项目领域，通过提供实验平台、信息基础设施以及总体协调、组织综合研究培训小组和向公众传播研究成果来支持《儿童权利公约》

Flow, transport and deformation in porous media are highly coupled processes that strongly depend on the non-linear interplay between physical, chemical and biological phenomena. According to the current state of the art, the analysis of these processes is mostly carried out on a variety of characteristic spatial and temporal scales that are determined by the geometry, structure and heterogeneity of the porous media. However, it is increasingly being recognised that the relevant overall functioning of porous-media systems is dictated by the character, geometry and dynamics of various types of fluid-fluid and fluid-solid interfaces that occur not only on the characteristic scales but most notably on smaller scales. For this reason, many available model concepts do not adequately capture and predict the actual system behaviour. Examples for this lack of predictive ability include the extended Darcy’s law for multi-phase flow, current models for evaporation from porous media, and existing models for fracture propagation in porous media.The research in this Collaborative Research Centre (CRC) aims to acquire the much-needed fundamental understanding of how interfaces affect flow, transport and deformation processes in porous-media systems. This involves the challenging tasks of quantifying how the dynamics of fluid-fluid and fluid-solid interfaces in porous-media systems are affected by pore geometry, heterogeneity and fractures, and of developing mathematical and computational models that describe the effective behaviour of porous-media systems including the effects of interfaces that occur on much smaller spatial scales. In order to focus research efforts within the CRC, three project areas have been defined that are representative of a wide range of interface-driven processes in porous media. Project Area A deals with complex interface-dependent exchange processes (mass, momentum and energy) for coupled free-flow/porous-media systems. Project Area B addresses complex fracture and damage processes in fluid-filled porous media, and Project Area C deals with pore-space alterations due to interacting processes at the interface between the fluid and the solid phase. The work in these project areas involves a coordinated research effort that combines mathematical and computational model development with advanced multi-scale imaging-based experiments. Project Areas A to C share many conceptual challenges, such as the visualization of both simulation and experimental results, the definition of benchmarks for code and model validation, as well as the coupling of different multi-physics and multi-scale simulation environments. These topics are addressed in Project Area D. Finally, a project area for central services has been defined that supports the CRC through providing an experimental platform, information infrastructure, as well as overall coordination, organising the integrated research training group, and disseminating research results to the public