NDLI: Effect of Design Parmeters on Aero-Acoustic and Aerodynamic Performance of Wells Turbines

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Starzmann, R. Carolus, T. H. Tease, K. Arlitt, R.
Copyright Year	2011
Abstract	A Wells turbine is an axial turbine, which is capable of extracting energy from an oscillating airflow. In an oscillating water column (OWC) power plant the Wells turbine is operated along its complete characteristic curve from no load to overload and back. Not only maximum efficiency but also damping, pneumatic power, overload capacity and noise emission are crucial parameters which need to be taken into account when designing a turbine for an OWC system. Based on a classical blade element approach a number of rotors were designed varying the hub-tip ratio and the solidity systematically. Three-dimensional numerical RANS simulations are carried out to predict the characteristic curves and extract the optimum operating coefficients as well as the stall margin. Selected rotors are manufactured as scaled down models. A steady state test rig, equipped with highly efficient silencers to ensure low noise air supply, is used to measure the complete aerodynamic and aero-acoustic characteristic curves. The results indicate how the turbines’ performance is affected by the choice of the hub-tip ratio and solidity.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
Starting Page	299
Ending Page	308
Page Count	10
File Format	PDF
ISBN	9780791844373
DOI	10.1115/OMAE2011-49127
Volume Number	Volume 5: Ocean Space Utilization; Ocean Renewable Energy
Conference Proceedings	ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2011-06-19
Publisher Place	Rotterdam, The Netherlands
Access Restriction	Subscribed
Subject Keyword	Damping Silencers Water Blades Rotors Acoustics Steady state Stress Emissions Design Noise (sound) Air flow Simulation Reynolds-averaged navier–stokes equations Power stations Engineering simulation Wells Turbines
Content Type	Text
Resource Type	Article

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