Actions for Wake characteristics of a tower for the DOE--NASA MOD-1 wind turbine

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Wake characteristics of a tower for the DOE--NASA MOD-1 wind turbine

Author
Savino, J. M.
Published
United States : [publisher not identified], 1978.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1978.
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Nash, M. and Wagner, L. H.

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Summary
A /sup 1///sub 40/th-scale model of a tower concept designed for the DOE-NASA MOD-1 wind power turbine was tested in a low-speed wind tunnel to determine the flow characteristics in the wake downwind of the tower. The tower model is a four-leg lattice type structure constructed with round members and gusset plates at the intersections of the members. Wind speed profiles were determined in a fixed plane downstream of the tower. Local values of wake minimum velocity ratio, average velocity ratio, and width were determined from these profiles, and these quantities were presented as a function of tower elevation for six wind approach angles form 0/sup 0/ to 45/sup 0/. The results from the MOD-1 tower model were compared to those of a MOD-O tower model (also a four-leg lattice configuration, but without gusset plates) and an eight-leg model previously reported. All three towers were constructed with round members. The comparison was based on single mean values of ratio of average velocity defect to free-stream velocity and ratio of wake thickness to blade radius.
Report Numbers
DOE/NASA/1028-78/17; NASA-TM-78853
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: EX-76-A-29-1028
OSTI Identifier 6970499
Research organization: National Aeronautics and Space Administration, Cleveland, Ohio (USA). Lewis Research Center.
View MARC record | catkey: 44797518