Experiments were performed with a 1 m diameter, 1 m tall three-bladed vertical axis turbine in a towing tank. Rotor power and drag (or thrust) were measured at a tow speed of 1 m/s, corresponding to a turbine diameter Reynolds number ReD = 106 and an approximate blade chord Reynolds number Rec = λU∞c/ν ∼ 105. Mechanical exergy efficiency estimates were computed from power and drag measurements using an actuator disk approach. Characteristics of the turbine’s near-wake were measured at one turbine diameter downstream. Variation of all three mean and fluctuating velocity components in the vertical and cross-stream directions were measured at peak turbine power output via acoustic Doppler velocimeter. The effect of tip speed ratio on near-wake mean velocity was observed at the turbine center line. Transverse profiles of mean velocity, fluctuating velocity, and Reynolds stresses were also measured at the turbine’s quarter height for two tip speed ratios of interest. Results are compared and contrasted with previous lower Reynolds number studies, and will provide a detailed data set for validation of numerical models.
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ASME 2013 Fluids Engineering Division Summer Meeting
July 7–11, 2013
Incline Village, Nevada, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5555-3
PROCEEDINGS PAPER
Performance and Near-Wake Measurements for a Vertical Axis Turbine at Moderate Reynolds Number
Peter Bachant,
Peter Bachant
University of New Hampshire, Durham, NH
Search for other works by this author on:
Martin Wosnik
Martin Wosnik
University of New Hampshire, Durham, NH
Search for other works by this author on:
Peter Bachant
University of New Hampshire, Durham, NH
Martin Wosnik
University of New Hampshire, Durham, NH
Paper No:
FEDSM2013-16575, V01BT12A005; 9 pages
Published Online:
December 13, 2013
Citation
Bachant, P, & Wosnik, M. "Performance and Near-Wake Measurements for a Vertical Axis Turbine at Moderate Reynolds Number." Proceedings of the ASME 2013 Fluids Engineering Division Summer Meeting. Volume 1B, Symposia: Fluid Machinery; Fluid Power; Fluid-Structure Interaction and Flow-Induced Noise in Industrial Applications; Flow Applications in Aerospace; Flow Manipulation and Active Control: Theory, Experiments and Implementation; Fundamental Issues and Perspectives in Fluid Mechanics. Incline Village, Nevada, USA. July 7–11, 2013. V01BT12A005. ASME. https://doi.org/10.1115/FEDSM2013-16575
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