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Full-Text Articles in Mechanical Engineering
Assessments And Computational Simulations In Support Of A Time-Varying Mass Flow Rate Measurement Technique For Pulsatile Gas Flow, Andrew Rice
Dissertations, Master's Theses and Master's Reports - Open
This thesis covers the correction, and verification, development, and implementation of a computational fluid dynamics (CFD) model for an orifice plate meter. Past results were corrected and further expanded on with compressibility effects of acoustic waves being taken into account. One dynamic pressure difference transducer measures the time-varying differential pressure across the orifice meter. A dynamic absolute pressure measurement is also taken at the inlet of the orifice meter, along with a suitable temperature measurement of the mean flow gas. Together these three measurements allow for an incompressible CFD simulation (using a well-tested and robust model) for the cross-section independent …
Vortex Shedding Dynamics In Long Aspect-Ratio Aerodynamics Bodies, Liu Chen
Vortex Shedding Dynamics In Long Aspect-Ratio Aerodynamics Bodies, Liu Chen
Dissertations, Master's Theses and Master's Reports - Open
The focus of the current dissertation is to study qualitatively the underlying physics of vortex-shedding and wake dynamics in long aspect-ratio aerodynamics in incompressible viscous flow through the use of the KLE method. We carried out a long series of numerical experiments in the cases of flow around the cylinder at low Reynolds numbers. The study of flow at low Reynolds numbers provides an insight in the fluid physics and also plays a critical role when applying to stalled turbine rotors. Many of the conclusions about the qualitative nature of the physical mechanisms characterizing vortex formation, shedding and further interaction …