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 7 of 7 for “"Actuator Disk Theory"”.
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Actuator Disk Theory for Compressible Flow
… applications of propellers and turbines, the Actuator Disk Theory or Froude’s Momentum Theory was established for compressible, subsonic flow using the three laws of conservation and isentropic thermodynamics. The compressible Actuator Disk Theory was established for the unducted (bare) and …
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Scattering of an entropy disturbance into sound by a linear cascade of turbine stator blades
… are used to verify the analytical predictions of actuator disk theory. The actuator disk theory (ADT) ignores the geometric details of a blade under the assumption that wavelengths of all the disturbances are much longer than the chord length of the blade and replaces it with a discontinuity at …
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Tension-Leg Platform for Offshore Diffusor-AugmentedHydrokinetic Turbine
… modeling of the diffuser and turbine using Actuator Disk Theory (ADT), with tools such as Rhino and Star CCM+. Mounted on a floating tension-leg platform anchored to the seabed, the turbine is designed to exceed the Betz limit, maximizing power output and advancing offshore energy harvesting …
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Magnetohydrodynamic Induction Pump Jet Propuslor for Undersea Vehicles
… kts). This research modeled the propulsor using Actuator Disk Theory (ADT) and incorporates inflow boundary layer effects and hydrodynamic drag to develop a total propulsor efficiency. There was a significant investigation into the mitigation of the finite length effect that has traditionally led …
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Implementation of a trim routine in a rotor model for the numerical simulation of helicopter flow-fields
… utilised a combination of blade element and actuator disk theory. Forces exerted by the rotor are calculated with the use of blade characteristics and flow properties. These forces were applied to the domain as momentum sources terms. The rotor model was incorporated with the CFD solver, …
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Turbulence ingestion noise of open rotors
… framework involves using Rapid Distortion Theory to calculate the distortion of an isotropic turbulence field (such as given by the von Karman spectrum) by the mean flow induced by the rotor (such as given by actuator disk theory), leading to an expression for the velocity incident upon the …
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Modeling of Small-Scale Wind Energy Conversion Systems
… dynamics code. Two-dimensional modeling using actuator disk theory was used to optimize the diffuser design. A statistical study was then conducted to reduce the computational time by selecting a descriptive set of models to simulate and characterize relevant parameters' effects instead of …