What is it like to work for ADP

Student work

For other current thermal baths at the RSM, Dr. B. Böhm ([email protected]…) and Dr. S. Wagner ([email protected]…) can always be reached.
  • Master thesis

    Coherent anti-Stokes Raman spectroscopy (CARS) is a widely used laser measurement technique for determining gas temperatures and species concentrations. The measurement method enables the gas temperature to be determined over a wide temperature range and is at the same time non-intrusive. These are two properties that make CARS particularly interesting for the investigation of modern combustion mechanisms.

    To determine the gas temperature with CARS, the nitrogen molecule is usually sampled. In order to be able to investigate nitrogen-free processes, such as the oxyfuel process, in the future, the existing measurement technology is to be expanded to include the oxygen molecule. For this purpose, investigations on a generic flat flame burner should be carried out within the thesis. The aim of this work is to determine the accuracy of the gas temperature using the O2 molecule as a function of the parameters temperature, oxygen concentration and the signal-to-noise ratio. For the evaluation of the recorded CARS spectra it is necessary to expand the already existing spectra evaluation in Matlab.

    Supervisor: M.Sc. Henrik Schneider

    Announcement as PDF

  • Advanced Design Project (ADP)

    At the Reactive Flows and Measurement Technology (RSM) department, a working group deals with laser spectroscopic diagnostics to investigate the processes during exhaust gas aftertreatment in internal combustion engines. Various innovative measurement methods for the sensitive detection of the exhaust gas components have already been developed for this purpose.

    With a view to the further tightening of the legal requirements for the emission of particles from motor vehicles, but also industrial processes, it is necessary to develop new methods for measuring particle parameters here too. For the investigation of the particle load in the exhaust gas (amount, mass, size) of various thermo-chemical processes, a measurement setup based on laser-optical methods is to be developed and characterized with regard to the detection limits.

    As part of the ADP, a benchmark of various ideas for measuring particularly small particles in a hot gas flow is to be carried out and, based on this, a first optical structure of one or more optical systems is to be carried out.

    Supervisor: Dr. rer. nat. Steven Wagner

    Announcement as PDF

  • Master thesis

    At the Reactive Flows and Measurement Technology (RSM) department, a working group deals with laser spectroscopic diagnostics to investigate the processes during exhaust gas aftertreatment in internal combustion engines. Various innovative measuring methods for the sensitive detection of the exhaust gas components have already been developed for this purpose.

    With a view to the further tightening of the legal requirements for the emission of particles from motor vehicles, but also industrial processes, it is necessary to develop new methods for measuring particle parameters here too. For the investigation of the particle load in the exhaust gas (quantity, mass, size) of various thermochemical processes, a measurement setup based on laser-optical methods is to be developed and characterized with regard to the detection limits.

    As part of the master's thesis, a benchmark of various ideas for measuring particularly small particles in a hot gas flow should therefore be carried out and, based on this, an initial optical structure of one or more optical systems should be carried out. This is intended to characterize the detection limits that can be achieved when determining the various particle parameters.

    Supervisor: Dr. rer. nat. Steven Wagner

    Announcement as PDF

  • Master thesis

    At the Reactive Flows and Measurement Technology department, a working group focuses on absorption spectroscopy using tunable diode lasers. The concentrations of various gases in a volume are measured contact-free and highly dynamic using innovative, laser-diagnostic methods using fiber-coupled lasers.

    Supervisor: M.Sc. Luigi Biondo

    Announcement as PDF

  • Master's thesis, Bachelor's thesis, Advanced Design Project (ADP), Advanced Research Project (ARP)

    Due to the high energy density of hydrocarbon fuels, there will continue to be many applications in the field of mobility and energy generation that are based on internal combustion engines. Here it is important to meet legal requirements on pollutant emissions, increase efficiency and enable the use of diversified fuels. A visually accessible direct-injection gasoline engine is therefore available at the institute, on which the internal engine energy conversion is examined using laser diagnostic methods.

    In the thesis, a novel indium tin oxide (ITO) coating is to be examined for its suitability for measurements of spray wetting. This material is an electrical semiconductor and at the same time largely transparent in visible light, which means that the wall wetting can be measured using an infrared camera and the spray can be characterized with visible light at the same time.

    Supervisor: M.Sc. Marius Schmidt

    Announcement as PDF

  • Bachelor thesis, Advanced Research Project (ARP)

    Due to the high energy density of hydrocarbon fuels, there will also be many future applications in the field of mobility and energy generation based on internal combustion engines. Here it is important to meet legal requirements on pollutant emissions, increase efficiency and enable the use of diversified fuels. A visually accessible direct-injection gasoline engine is therefore available at the institute, on which the internal engine energy conversion is examined using laser diagnostic methods.

    In the work, an existing 0D / 1D model of the test bench in GT-Power is to be further developed. With the help of such reduced models, fundamental characteristics such as gas dynamics, acoustic vibrations, heat transport, performance and emission formation can be investigated. It is precisely the sensitivity of such variables to the boundary conditions, which inevitably vary on the real test bench, that is relevant for the interpretation of experiments and numerical CFD simulations.

    Supervisor: M.Sc. Marius Schmidt

    Announcement as PDF

  • Master thesis

    The RSM department deals with the optical and spectroscopic investigation of reactive flows. This expertise is to be used in the future to diagnose industrial catalytic processes. Specifically, heterogeneous catalytic processes are to be analyzed in which high temperatures and short contact times of the reactants with the catalyst prevail. In order to better understand the gas phase reactions that occur, a new sensor system is to be developed which allows for the first time to measure the concentrations as a function of the spatial distance from the catalyst. Spontaneous Raman spectroscopy is used as the measuring principle. For the spatial resolution of the gas concentrations, a new type of spectrometer, specially designed for the requirements of catalytic processes, is to be developed and constructed. In detail, the broadband background radiation from glowing catalyst surfaces in the spectrometer, which interferes with the measurement signal, must be reduced as much as possible by means of a new, already developed concept.

    Supervisor: M.Eng. Konrad Koschnick

    Announcement as PDF

  • Master's thesis, Bachelor's thesis, Advanced Design Project (ADP), Advanced Research Project (ARP)

    As part of various research projects, the Reactive Flows and Measurement Technology department examines flow and combustion processes in gasoline engines in order to derive a basic understanding of the physical processes and provide measurement data for the model validation of numerical simulations. For this purpose, an optically accessible gasoline engine is available at the department, which is examined with various measurement techniques, e.g. minimally invasive optical laser diagnostics.

    Supervisors: M.Sc. Marius Schmidt,

    Announcement as PDF

Work already awarded

  • Advanced Design Project (ADP)

    The high-temperature process diagnostics working group in the Reactive Flow and Measurement Technology (RSM) department develops sensors based on absorption spectroscopy to investigate chemical processes close to the wall, such as those that occur in the NOx reduction in the exhaust system. In order to be able to better understand and model the pollutant reduction, chemistry and deposit formation in SCR catalysis in the future, generic experiments are necessary which systematically examine the processes in the exhaust system as a function of the initial and boundary conditions. For this purpose, a test stand has already been designed at the department, on which, among other things, films formed by AdBlue injection are examined.

    In order to be able to control the temperature of the floor plate wetted by the AdBlue film, a heatable floor plate for the optical access to the exhaust gas duct is to be developed and characterized within the scope of this work. The aim is to achieve a homogeneous temperature distribution. In addition, it should be possible to monitor the temperature.

    Supervisors: M.Sc. Anna Schmidt, Dr. rer. nat. Steven Wagner

    Announcement as PDF