Large-Eddy simulation of combustion induced vortex breakdown in an unconfined turbulent vortex using a presumed-PDF combustion model Kröger, Hannes , 1979- Text theses Text Hochschulschrift 2010 [2010] eng electronic resourceremoteComputermedienOnline-Ressourcetext/htmlapplication/pdfapplication/pdfOnline-Ressource Ill., graph. Darst. The work presents numerical investigations of flame propagation in a free straight vortex. The simulations rely on the LES technique and presumed-PDF combustion modeling with a chemical mechanism reduced by an ILDM approach which has been validated on a number of test cases. Numerical and experimental study confirm that the phenomenon of the Combustion Induced Vortex Breakdown (CIVB) can take place in an unconfined turbulent vortex with a strong inner axial flow. The LES analysis allowed to determine the main physical mechanisms of this phenomenon. vorgelegt von Hannes Kröger Rostock, Univ., Fak. f. Maschinenbau u. Schiffstechnik, Diss., 2010 Langzeitarchivierung gewährleistet pdager 621.40230151864 621.433 620 50.34 http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2010-0118-2 http://rosdok.uni-rostock.de/resolve?urn=urn:nbn:de:gbv:28-diss2010-0118-2&pdf http://nbn-resolving.de/urn:nbn:de:gbv:28-diss2010-0118-2 http://d-nb.info/1008950289/34 http://rosdok.uni-rostock.de/metadata/rosdok_disshab_000000000485 Large-Eddy simulation of combustion induced vortex breakdown in an unconfined turbulent vortex using a presumed-PDF combustion model--(DE-627)632150351 urn:nbn:de:gbv:28-diss2010-0118-2 oclc: 696107511 ppn: (DE-627)634525204