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Cihan Ates, Dogan Bicat, Radoslav Yankov, Joel Arweiler, Rainer Koch and Hans-Jörg Bauer
In this study, we propose a population-based, data-driven intelligent controller that leverages neural-network-based digital twins for hypothesis testing. Initially, a diverse set of control laws is generated using genetic programming with the digital tw...
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Beata Medynska-Gulij, Tillmann Tegeler, Hans Bauer, Krzysztof Zagata and Lukasz Wielebski
Research on a specific topic requires the individualized cartographic methods of work that may be defined as the Realm of Maps. The double dimensionality in the Realm of Maps is understood here as a physical place?a studio workroom?and as a research meth...
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Marta Kuzma and Hans Bauer
The article presents research on the evaluation of hidden map metadata. A hidden map is a map being part of a book that illustrates certain facts described in the book (e.g., military campaigns, political processes, migrations). The evaluation regards th...
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Jens Frühhaber, Christian Lieber, Dominik Mattes, Thomas Lauer, Rainer Koch and Hans-Jörg Bauer
Ammonia preparation from urea-water solutions is a key feature to ensure an effective reduction of nitrogen oxides in selective catalytic reduction (SCR) systems. Thereby, air-assisted nozzles provide fine sprays, which enhance ammonia homogenization. In...
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Christian Lieber, Rainer Koch and Hans-Jörg Bauer
The quantitative investigation of droplet laden turbulent flows at high temperature conditions is of great importance for numerous applications. In this study, an experiment was set up for investigation of evaporating urea?water sprays, which are relevan...
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Manuel Hildebrandt, Corina Schwitzke and Hans-Jörg Bauer
The literature already contains some experimental, analytical and numerical investigations on the rubbing and hysteresis behaviour of brush seals. What the investigations have in common is that they were carried out with new and uncontaminated seals, or ...
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Oliver Munz, Tim Pychynski, Corina Schwitzke and Hans-Jörg Bauer
Labyrinth seals are a state-of-the-art sealing technology to prevent and control leakage flows at rotor–stator interfaces in turbomachinery. Higher pressure ratios and the economical use of cooling air require small clearances, which lead to potent...
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Manuel Hildebrandt, Heiko Schwarz, Corina Schwitzke, Hans-Jörg Bauer and Jens Friedrichs
Reducing losses in the secondary air system of gas and steam turbines can significantly increase the efficiency of such machines. Meanwhile, brush seals are a widely used alternative to labyrinth seals. Their most valuable advantage over other sealing co...
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Fabian Bleier, Corina Schwitzke and Hans-Jörg Bauer
The paper presents the setup and analysis of an experimental study on heat transfer of a jet cooled compressor rear cone with adjacent conical housing. The main goal of the paper is to describe the systematic derivation of empirical correlations for glob...
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