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Full-Text Articles in Mechanical Engineering
Data Driven Low-Bandwidth Intelligent Control Of A Jet Engine Combustor, Nathan L. Toner
Data Driven Low-Bandwidth Intelligent Control Of A Jet Engine Combustor, Nathan L. Toner
Open Access Dissertations
This thesis introduces a low-bandwidth control architecture for navigating the input space of an un-modeled combustor system between desired operating conditions while avoiding regions of instability and blow-out. An experimental procedure is discussed for identifying regions of instability and gathering sufficient data to build a data-driven model of the system's operating modes. Regions of instability and blow-out are identified experimentally and a data-driven operating point classifier is designed. This classifier acts as a map of the operating space of the combustor, indicating regions in which the flame is in a "good" or "bad" operating mode. A data-driven predictor is also …
Algebraic Level Sets For Cad/Cae Integration And Moving Boundary Problems, Kritika Upreti
Algebraic Level Sets For Cad/Cae Integration And Moving Boundary Problems, Kritika Upreti
Open Access Dissertations
Boundary representation (B-rep) of CAD models obtained from solid modeling kernels are commonly used in design, and analysis applications outside the CAD systems. Boolean operations between interacting B-rep CAD models as well as analysis of such multi-body systems are fundamental operations on B-rep geometries in CAD/CAE applications. However, the boundary representation of B-rep solids is, in general, not a suitable representation for analysis operations which lead to CAD/CAE integration challenges due to the need for conversion from B-rep to volumetric approximations. The major challenges include intermediate mesh generation step, capturing CAD features and associated behavior exactly and recurring point containment …