Some techniques for reducing the tower shadow of the DOE/NASA mod-0 wind turbine tower - Burley, Richard R.; Savino, Joseph M.; Wagner, Lee H.; Diedrich, James H.; National Aeronautics and Space Administration; United States Department of Energy (Cleveland : National Aeronautics and Space Administration, 1979)
Wind speed profile measurements to measure the effect of a wind turbine tower on the wind velocity are presented. Measurements were made in the wake of scale models of the tower and in the wake of certain full scale components to determine the magnitude of the speed reduction (tower shadow). Shadow abatement techniques tested on the towers included the removal of diagonals, replacement of diagonals and horizontals with round cross section members, installation of elliptical shapes on horizontal members, installation of airfoils on vertical members, and application of surface roughness to vertical members.
Informe/número de patente NASA TM-79202
DOE/NASA/20370-79/17
Keywords: ENERGIA EOLICA; TURBINAS EOLICAS; PRODUCCION DE ENERGIA; CONVERSION DE ENERGIA; EFECTO SOMBRA INTERMITENTE; SHADOW FLICKER