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SIMULATION AND MODELING OF AN ACOUSTICALLY FORCED MODEL ROCKET INJECTOR

dc.contributor.advisorYu, Kenen_US
dc.contributor.authorGers, Daviden_US
dc.date.accessioned2010-10-07T06:05:09Z
dc.date.available2010-10-07T06:05:09Z
dc.date.issued2010en_US
dc.identifier.urihttp://hdl.handle.net/1903/10917
dc.description.abstractA numerical and experimental study was performed to assess the capability of the Loci-CHEM CFD solver in simulating dynamic interaction between hydrogen-oxygen turbulent diffusion flames and periodic pressure waves. Previous experimental studies involving a single-element shear-coaxial model injector revealed an unusual flame-acoustic interaction mechanism affecting combustion instability characteristics. To directly compare the simulation and experiments, various models in the present solver were examined and additional experiments conducted. A customized mesh and corresponding boundary conditions were designed and developed, closely approximating the experimental setup. Full 3-D simulations were conducted using a hybrid RANS/LES framework with appropriate chemistry and turbulence models. The results were compared for both reacting and non-reacting flows that were excited at various forcing frequencies representing both resonant and non-resonant behaviors. Although a good qualitative agreement was obtained for the most part, there was a significant discrepancy in simulating the flame-acoustic interaction behavior observed under non-resonant forcing conditions.en_US
dc.titleSIMULATION AND MODELING OF AN ACOUSTICALLY FORCED MODEL ROCKET INJECTORen_US
dc.typeThesisen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentAerospace Engineeringen_US
dc.subject.pqcontrolledEngineering, Aerospaceen_US
dc.subject.pquncontrolledCFDen_US
dc.subject.pquncontrolledcombustion instabilityen_US
dc.subject.pquncontrolledLoci-Chemen_US
dc.subject.pquncontrolledpropulsionen_US
dc.subject.pquncontrolledrocket engineen_US


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