Topic
Wells turbine
About: Wells turbine is a research topic. Over the lifetime, 2094 publications have been published within this topic receiving 28695 citations.
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Patent•
16 Apr 2004
TL;DR: In this paper, a diffuser-augmented wind-turbine assembly is presented, in which the diffuser has a cylindrical central section rotatably supporting a rotor drum which in turn supports turbine blades without requiring a central support shaft.
Abstract: A diffuser-augmented wind-turbine assembly in which the diffuser has a cylindrical central section rotatably supporting a rotor drum which in turn supports turbine blades without requiring a central support shaft. Wind energy drives the turbine blades and rotor drum, which in turn drive a generator of electrical power.
116 citations
TL;DR: In this paper, a linearized theory of an oscillating water column (OWC) installed on a straight coast is described, where the sea depth is assumed to be constant and the coast is a vertical cliff.
115 citations
Patent•
10 May 2005
TL;DR: In this paper, a turbine control system for a variable speed electrical generator in a wind turbine mounted atop a support tower is described, which includes a turbine support tower position sensor and may also include other tower acceleration and velocity sensors.
Abstract: A turbine control system for a variable speed electrical generator in a wind turbine mounted atop a support tower. The wind turbine converts wind energy into a driving torque applied to the generator. The control system includes a turbine support tower position sensor and may also include other tower acceleration and velocity sensors. A wind flow estimator uses the measured motion, generator rotation rate and blade pitch angle to predict wind flow over the swept area of the turbine's rotor, and the tower motion. The predicted wind flow and motion is used in the turbine control system to properly adjust its operating point, to tune the controller, to control the rotor rotation rate, and to damp tower oscillations.
114 citations
TL;DR: In this article, the effect of pulsating flow in a variable geometry radial inflow turbine was analyzed under isentropic pulses, which are similar to those created by a rotating disk in a turbocharger test rig.
114 citations
Patent•
10 Jul 1987TL;DR: In this paper, a new and improved gas turbine engine including a gas generator and a power turbine is described, with a first rotor having a plurality of first turbine blade rows extending radially outwardly therefrom, and a second rotor having an additional second turbine blade row extending outwardly inwardly there from.
Abstract: A new and improved gas turbine engine including a gas generator and a power turbine is disclosed. The power turbine includes a first rotor having a plurality of first turbine blade rows extending radially outwardly therefrom, and a second rotor having a plurality of second turbine blade rows extending radially inwardly therefrom. The power turbine is supported aft of the gas generator and is effective for receiving combustion gases therefrom and expanding the gases through the first and second turbine blade rows for extracting substantially all output power therefrom for driving the first and second rotors in counterrotating directions.
112 citations