Collaborative Research Projects
The profile area Thermo-Fluids & Interfaces (TFI) comprises a number of collaborative research prgrammes, in particular sponsored by the German Science Foundation (DFG) and the EU Framework Programmes. The following list gives an overview of those programmes in which TFI members take a leading role.
1. Collaborative Research Centers
Spokesperson: Prof. Dr.-Ing. Peter Stephan
Funding period: 2016-2020 (first period)
What happens when surfaces are printed and coated with different liquids? What processes occur when liquid meets a solid? How do wetting and dewetting depend on the mutual local momentum, heat and mass transport processes? The underlying mechanisms of the mutual interaction between these processes have largely not been understood to date, and are the focus of the Collaborative Research Center (SFB) 1194. Although the physical phenomena take place only in a range of several nanometres or a few micrometres, they determine the efficiency of the processes as a whole as well as the resulting product quality.
Co-spokesperson: Prof. Dr. Dieter Bothe, Mathematical Modeling and Analysis
Spokesperson: Prof. Dr.-Ing. Johannes Janicka
Funding period: 2015-2019 (first period)
The CRC/Transregio “Near-Wall Turbulent Chemically Reacting Multiphase Flows” is concerned with important aspects of combustion processes. The presence of walls has an important influence on the behaviour of chemically reacting flows. Near-wall processes impact on technological applications in energy engineering such as engines, gas turbines and power plants.
However, little research has been done into the underlying mechanisms of near-wall processes and how they interact. The researchers therefore intend to analyse the basic principles involved in complex near-wall three-phase flows. Their aim is to develop a software package that brings together many of the chemical and physical processes that take place near walls. This could help engineers to design more efficient combustion processes and reduce the impact on the environment.
- Prof. Dr. Andreas Dreizler, Institute Reactive Flows and Diagnostics, Mechanical Engineering
- Prof. Dr. Olaf Deutschmann, Institute Chemical Technology, Karsruhe Institute of Technology
Coordinator at TU Darmstadt: Prof. Dr.-Ing. Cameron Tropea
Funding period: 2009-2017 (first and second period)
The fundamental understanding of droplet dynamics is a critical prerequisite to the prediction of processes in numerous technical systems. Many of these processes happen under extreme ambient conditions – e.g. high pressure or extreme temperatures – and can already be found in technical applications, despite the absence of fundamental knowledge.
The goal is to gain a profound physical understanding of the essential processes. This understanding is the basis for new ways of analytical and numerical descriptions. Thereby, an improved prediction of large systems in nature or in technical applications shall be possible.
Coordinator at TU Darmstadt: Prof. Dr. Nico van der Vegt
Funding period: 2014-2018 (first period)
Multiscale modelling is a core topic in materials science. Soft matter is an important and technologically relevant class of materials. Its properties are determined by a subtle interplay of energy and entropy, so that small changes in molecular interactions can have major changes in the macroscopic properties of a system.
The SFB/TRR 146 seeks to address some of the most pressing issues of multiscale modelling in a joint effort by physicists, chemists, applied mathematicians and computer scientists. The aim is to enable simulations of more complex systems in the “real world”, determined by non-equilibrium processes, by the development of new simulation and analysis techniques.
2. Priority Programmes
Coordinator: Prof. Dr. Dieter Bothe
Funding period: 2010-2016
In multiphase flow systems several physico-chemical processes determine the systems' behaviour, e.g., the fluid dynamics in the different fluids and the dynamics of the interfaces, heat and mass transport between the fluids, adsorption effects at the interface and transport of species on the interface, variable interface properties, phase changes. In general these processes are strongly coupled and properties of the interface play a crucial role.
A rigorous understanding of the behaviour of such very complex flow problems must be based on physically sound mathematical models accounting especially for local processes at the interface. The aim of this Priority Programme is to further develop and expand such models, to analyse their mathematical properties and to develop and advance numerical methods for the rigorous simulation of these models.
Program committee at TU Darmstadt: Prof. Dr. Dieter Bothe
Funding period: 2014-2020
SPP 1740 focuses on time scales of reaction networks (kinetics) on the local (inherent) level relevant in chemical reaction engineering to investigate the interplay between hydrodynamics and reaction in bubble flows. In this connection, great importance is attached to the interdisciplinary cooperation of engineering scientists, chemists and mathematicians.
Within the first funding period, pilot experiments with a manageable level of complexity will promote cross-institutional cooperation. During the course of the SPP, the level of complexity of the investigated flows will be increased to a free reactive bubble flow.
3. Research Training Groups
Coordinator: PD Dr.-Ing. habil. Tatiana Gambaryan-Roisman
Funding period: 2014-2018
CoWet aims at bridging the gap between industrially relevant processes involving complex fluid-solid interactions and high resolution experiments, as well as developing physically sound models and direct computer simulations. The high-resolution, high-speed experimental techniques, including confocal microscopy, atomic force microscopy and fluorescent correlation spectroscopy, will be used to reveal the nano- and microscopic phenomena governing the complex fluid-solid interactions in the course of wetting/spreading processes of complex liquids over complex substrates.
The modern computational and modelling techniques will help to reveal, predict and optimize the industry-relevant processes. The young researchers will be trained to study the systems of practical importance rather than focusing on model systems only. They learn the cutting edge scientific methodology and application technology from an industrial perspective. CoWet fellows will form a powerful network of experts which will eventually result in ground-breaking development of new complex fluid-solid technological processes.
Funding period: 2009-2018 (first and second period)
Coordinator at TU Darmstadt: Prof. Dr. Matthias Hieber
The International Research Training Group funded by DFG and JSPS and associated with TU Darmstadt, Waseda University in Tokyo and University of Tokyo started on June 1, 2009. The research focuses on analytical, stochastic, geometric and optimization as well as on aerodynamical aspects of fluid dynamics.
The program mainly seeks to combine methods from several mathematical disciplines, as analysis, stochastics, geometry and optimization to pursue fundamental research in Fluid Dynamics.The International Research Training Group distinguishes itself through joint teaching and supervision. The core program consists of interdisciplinary lectures and seminars and includes research and study periods in Tokyo.