Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"gap variation"”.
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3D turbine tip clearance flow redistribution due to gap variation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1991.
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Computational Modeling of a-SiO₂ Nanoparticles and their Electronic Structure Calculation
… method. The results show some trends in band gap variation for Type I models. The trends in band gap variation for other two types are less clear. A series of NP models with a spherical pore in the middle of a solid NP model are constructed and studied. Spherical pores of radii of 6 Å, 8 Å, 10 …
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Two-dimensional simulation of quantum well lasers including energy transport
… Fermi-Dirac statistics and the spatial band-gap variation in a degenerate semiconductor device with nonuniform band structure are included in the analysis. Sources of ill-conditioning in the simulation of thermal flow in semiconductor devices are considered, and a new conditioning scheme …
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Effects of rotor tip clearance on an embedded compressor stage performance
Compressor efficiency variation with rotor tip gap is assessed using numerical simulations on an embedded stage representative of that in a large industrial gas turbine with Reynolds number being approximately 2 x 106 to 7 x 106. The results reveal three distinct behaviors of efficiency variation …
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Characterization of an Electromagnetic Tuned Vibration Actuator
… that can have its tuned frequency altered by gap and current variation. The advantage of an adjustable TVA is that the system can be tuned to various excitation frequencies to cancel vibration. This research examines a unique embodiment using permanent magnets and an electromagnetic absorber …
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Loosely Coupled Transformer and Tuning Network Design for High-Efficiency Inductive Power Transfer Systems
… approach is built and tested under different gap and load conditions. Peak IPT system DC-DC efficiencies of 98% and 96.6% are achieved with 4-cm and 8-cm air gap conditions, which is comparable to the conventional plug-in type or wired charging systems for EVs. A long-hour test with real EV …