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Improving The Efficiency Of Wind Farm Turbines Using External Airfoils, Shujaut Bader
Improving The Efficiency Of Wind Farm Turbines Using External Airfoils, Shujaut Bader
Masters Theses
Wind turbine efficiency typically focuses on the shape, orientation, or stiffness of the turbine blades. In this thesis, the focus is instead on using static fixed airfoils in proximity to the wind turbine to control the airflow coming out of the turbine. These control devices have three beneficial effects. (1) They gather air from “higher up” where the air is moving faster on average (and therefore has more kinetic energy in it). (2) They throw the used (and slowed down air) downwards. This means that any turbines in the wind farm behind the lead turbines do not get “stale” air. …
Turbulent Transition In Electromagnetically Levitated Liquid Metal Droplets, Jie Zhao
Turbulent Transition In Electromagnetically Levitated Liquid Metal Droplets, Jie Zhao
Masters Theses
The condition of fluid flow has been proven to have a significant influence on a wide variety of material processes. In electromagnetic levitation (EML) experiments, the internal flow is driven primarily by electromagnetic forces. In 1-g, the positioning forces are very strong and the internal flows are turbulent. To reduce the flows driven by the levitation field, experiments may be performed in reduced gravity and parabolic flights experiments have been adopted as the support in advance. Tracer particles on the surface of levitated droplets in EML experiment performed by SUPOS have been used to investigate the transition from laminar to …