Investigation of mesospheric instabilities: observations and direct numerical simulations Ramachandran, Kesava Prasad , 1992- (VerfasserIn) Grundmann, Sven (AkademischeR BetreuerIn) Chau, Jorge Louis , 1969- (AkademischeR BetreuerIn) Universität Rostock (Grad-verleihende Institution) Universität Rostock Fakultät für Maschinenbau und Schiffstechnik (Grad-verleihende Institution) Text theses Text Hochschulschrift 2023 30.11.2023 eng ger electronic resourceremoteComputermedienOnline-Ressourceapplication/pdf1 Online-Ressource (viii, 138 Seiten) Illustrationen, Diagramme Using airglow imagers, a particular type of gravity wave event called a mesospheric bore was observed over Germany and the observation was complemented by 2D Direct Numerical Simulation of the Navier-Stokes equations under Boussinesq approximation. The inclusion of the wind in addition to temperature, led to the generation of secondary instabilities previously reported in observations of both bores and solitons. The extension of the existing simulation to 3D showed that the dynamics are also influenced by the generation of these instabilities in the transverse direction to the propagation.<eng> Open Access Namensnennung - Weitergabe unter gleichen Bedingungen 4.0 International vorgelegt von Kesava Prasad Ramachandran GutachterInnen: Sven Grundmann (Lehrstuhl Strömungsmechanik, Universität Rostock) ; Jorge Chau (Leibniz-Institut für Atmosphärenphysik e.V., Universität Rostock) Dissertation Universität Rostock 2024 530 620 551.51 550 https://purl.uni-rostock.de/rosdok/id00004757 https://doi.org/10.18453/rosdok_id00004757 https://nbn-resolving.org/urn:nbn:de:gbv:28-rosdok_id00004757-8 https://d-nb.info/1361954353/34 Investigation of mesospheric instabilities--(DE-627)1920730990 urn:nbn:de:gbv:28-rosdok_id00004757-8 doi: 10.18453/rosdok_id00004757 oclc: 1511806039 ppn: (DE-627)1920726705