10.18453/rosdok_id00004598 John, Kristine Kristine John http://d-nb.info/gnd/1331519632 https://orcid.org/0000-0002-7380-2982 Universität Rostock 2023 620 Engineering & allied operations 2023 en https://purl.uni-rostock.de/rosdok/id00004598 urn:nbn:de:gbv:28-rosdok_id00004598-8 Magnetic resonance velocimetry is a comparatively new measurement method in experimental fluid dynamics with several advantages compared to conventional laser optical measurement techniques. In recent years, nuclear reactor safety problems have been identified as an application that could greatly benefit from this measurement technique. The thesis presents an improved measurement method to provide comprehensive experimental data in a fuel assembly model. In particular, focus is placed on reducing the effect of systematic errors and extending the acquisition to the Reynolds stress tensor.