The correction that must be applied to the upstream wind velocity, when a rectangular flat plate normal to the flow direction is placed in an open jet wind tunnel, is determined and is found to be at all times equal to or greater than unity. It is also found to be dependent upon the distance of the body from the tunnel outlet, and the projected area of the body. Comparisons with previous work carried out in closed wind tunnels are made to confirm the experimental technique used.
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References
1.
SayersA. T.ChristoperA. F.Performance characteristics of a horizontal axis model wind turbine. Proc. Instn. Mech. Engrs., 1981, 195, 223–229.
PopeA.HarperJ. J.Low speed wind tunnel testing, Wiley, New York, 1966.
4.
MaskellE. C.A theory of the blockage effects on bluff bodies and stalled wings in a closed wind tunnel. Aero Res. Council, Reports and Memoranda 3400, 1965, pp 1–22.
5.
AlexanderA. J.Wind tunnel corrections for Savonius rotors. 2nd International Symposium on Wind Energy Systems, Amsterdam, Oct. 1978.
6.
FackrellJ. E.Blockage effects on two-dimensional bluff body flow. Aero. Quart., 1975, 26, 243–253.
7.
AwbiH. B.Wind tunnel wall constraint on two-dimensional rectangular-section prisms. J. Indust. Aero., 1972, 3, 285–306.
