Print Email Facebook Twitter High Frequency Oscillations in a Combustion Chamber Title High Frequency Oscillations in a Combustion Chamber: A Novel Mitigation Strategy Author de Jongh, Reinout (TU Delft Mechanical, Maritime and Materials Engineering) Contributor Klein, S.A. (mentor) Boersma, B.J. (graduation committee) Panek, Lukasz (graduation committee) Degree granting institution Delft University of Technology Programme Mechanical Engineering Date 2019-02-15 Abstract Restrictions on NOx emissions are increasingly stricter. In order to reduce the emissions of a gas turbine, manufacturers moved from diffusion-flames to lean premixed flames in their combustion process. However lean premixed flames are prone to (transverse) combustion instabilities. These instabilities consists of thermoacoustically driven pressure oscillations. In order to mitigate acoustic oscillations, dampers are implemented in a gas turbine combustion chamber. These dampers have proven to be effective, but they also consume cooling air, which has a negative impact on the efficiency of the gas turbine. Therefore in this thesis, a solution that potentially provide damping without consuming cooling air is investigated. Subject CombustioninstabilitiesHigh Frequency To reference this document use: http://resolver.tudelft.nl/uuid:736b7d22-2a36-43f7-a049-e9149fc012be Embargo date 2024-02-15 Part of collection Student theses Document type master thesis Rights © 2019 Reinout de Jongh Files PDF Reinout_TUDELFT_4164652_FINAL.pdf 57.28 MB Close viewer /islandora/object/uuid:736b7d22-2a36-43f7-a049-e9149fc012be/datastream/OBJ/view