TU BRAUNSCHWEIG

Multiphysics

The field of research called "Multiphysics" deals with the interdisciplinary investigation of systems with interacting physical effects. The main challenge herein is the combination of different complex solvers within a coupling scheme. An example for a multiphysical problem is the fluid-structure interaction (fsi) or aero-thermo-structural interaction, which takes also the influence of temperature into account.

 

Current projects

Collaborative project SARAH (Increased Safety and robust certification for ditching of aircrafts and helicopters)

DFG-Collaborative Research Center 880: Fundamentals of high lift for future commercial aicraft

DFG SFB-TR 40 sub-project D2 - "Mechanical integrity of thermal barrier coatings on nozzle structures under thermo mechanical loads"

DFG SFB-TR 40 sub-project D3 - "Life time prediction of nozzle structures under aerodynamic loads"

DFG SFB-TR 40 Subproject D9 - Experimental investigation for life-cycle prediction

HyMoWi (Hybrid-Morphing-Wing: Future potential of hybrid-morphing wing) - Passive and hybrid morphing wing structures

Completed projects

 


Current projects


Collaborative project SARAH (Increased Safety and robust certification for ditching of aircrafts and helicopters)

SARAH (Increased Safety and robust certification for ditching of aircrafts and helicopters) is a Horizon 2020 collaborative project, aiming at establishing novel holistic, simulation-based approaches to the analysis of aircraft ditching. The project's consortium is built up from a consortium of experts from OEM industries, experienced suppliers of simulation technologies, established research institutions and representatives of the certification authorities. Results of SARAH are expected to support a performance-based regulation and certification for next generation aircraft and helicopter and to enhance the safe air transport as well as to foster the trustworthiness of aviation services.

One major part of the expected outcomes of the project are more robust and reliable solutions for aircraft and helicopters, based on an improved understanding of novel numerical simulation technologies that incorporate complex fracture mechanics and the interaction between hydrodynamics and structural mechanics.

additional information

Contact : M. Müller, M. Woidt

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DFG-Collaborative Research Center 880: "Fundamentals of high lift for future commercial aicraft", TP C3 - Structural Design and Aeroelasticity

A full analysis of today’s commercial aircrafts has shown a substantial need for high lift devices, which will not be covered by the predominant technology evolution. This is true in particular in the domains of noise reduction and enhanced scalability of the performance parameters of high lift device during take-off and landing.

In the long term, these requirements lead to the development of the technological fundamentals for a new segment of low noise commercial aircrafts capable of short take-offs and landings, which allow for better integration in the cities of industrialized societies. The realization of this vision of new means of transport requires technologies based on aeroaccustics, aerodynamics and flight dynamics, which surpasses the available methods and knowledge by far.

The subproject C3 "Structural Design and Aeroelasticity" focuses on the requirements of the structural design of the aircraft taking into account the general aeroelastic effects of the wing and the special effects created by the blown flap. New flap designs will be evaluated within this context.

Flow and deformation of SFB-880 plane

additional information

Contact TP C3: F. Runge, M. Rohdenburg

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DFG-Collaborative Research Center Transregio 40 - sub-project D2: “Mechanical integrity of thermal barrier coatings on nozzle structures under thermo mechanical loads”

The SFB-TR40 focuses on technological foundations for the design of thermally and mechanically highly loaded components of future space transportation systems.

The aim of the sub-project D2 is to investigate failure mechanisms of thermal barrier coatings on combustion chambers of liquid rocket engines. Our collaboration partner for this project is the Institut für Werkstoffe of the TU Braunschweig. At our institute we follow a multi scale analysis approach in order to investigate these phenomena. A global FSI model of a typical thrust chamber is used to analyse the acting thermal and mechanical loads. For highly loaded positions resultant boundary conditions of the global model are transferred to a local FEM model, where possible delaminations are analysed by a fracture mechanics approach.

additional information

Contact TP D2: Daniel Kowollik

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DFG-Collaborative Research Center Transregio 40 - sub-project D3: “Life time prediction of nozzle structures under aerodynamic loads” 

The SFB-TR40 focuses on technological foundations for the design of thermally and mechanically highly loaded components of future space transportation systems.

The sub-project D3 aims at a realistic modeling of the cyclic thermo mechanical processes in specific combustion chamber and nozzle structures for the purpose of lifetime estimation. Our collaboration partner for this project is the Institut für angewandte Mechanik of the RWTH Aachen University. At our institute we develop the global fluid and structural models in order to analyze entire rocket engine cycles by means of a partitioned FSI approach. The development of an efficient coupling strategy for three interacting domains hot gas, structure and supercritical cooling fluid is a methodological challenge that we face in this project.

Results of a coupled hot gas/structure FSI analysis at a steady state hot gas run.

additional information

Contact TP D3: F. Hötte

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DFG-Collaborative Research Center Transregio 40 - sub-project D9: Experimental investigation for life-cycle prediction

The aim of the research project SFB-TR 40 is the investigation of fundamental technologies for the development of future space-transport-system components under high thermal and mechanical loads. Within the subproject D9 experimental investigations of a rocket combustion chamber under cyclic loads should be carried out. Hence an experimental setup using a rectangular combustion chamber should be designed in cooperation with the TU Munich. The wall structure, the hot flow and the flow of the cooling media should be investigated using optical measurement systems. In addition the experimental investigation of the cooling flow using a scaled cooling channel under thermal loads is planned.

Fatigue Segment

Fatigue Segment(Prefabrication)

additional information

Contact:F. HötteM. Rohdenburg

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HyMoWi (Hybrid-Morphing-Wing: Future potential of hybrid-morphing wing) – sub project : Passive and hybrid morphing wing structures

The aim of the research project PyMoWi is to significantly reducte the wing’s weight and complexity by implementing a passive and in particular a hybrid morphing of the wing geometry. The term "hybrid" is understood to refer to the symbiosis of active and passive morphing of the wing structure.

Starting point is the investigation of passive morphing wings (without or with only few actuators) with regards to the future potentials until 2050. In addition to increasing flight performance in individual flight conditions, a passive morphing wing is to be investigated in order to reduce the intensity of critical load cases. From the findings, concepts for a simplified, novel wing structure with passive and active, thus "hybrid" morphing are to be developed in cooperation with the ILR of TU Dresden. Ideally the different control surfaces can be realized in one overall morphing structure with a high innovation potential until 2050. By reducing complexity and the number of systems, additional weight is to be saved and reliability to be increased.

Contact: S. Ko

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Completed projects



DFG - Priority Program SPP 1207: Analysis of flapping flight with elastic profiles (DFG- Schwerpunktprogramm SPP 1207: Analyse des Schlagfluges mit elastischen Profilen)



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