Profiles of mean wind speeds and vertical turbulence intensities measured at seashore and two inland sites using Doppler sodars

Autor:	Takashi Maruyama, Kenichi Suda, Yukio Tamura, Osamu Nakamura, Kazuki Hibi, Yoshiharu Iwatani, Ryukichi Ishibashi
Rok vydání:	2007
Předmět:	Meteorology Renewable Energy Sustainability and the Environment Turbulence Mechanical Engineering Aerodynamics Power law Wind speed symbols.namesake Wind profile power law Wind shear Turbulence kinetic energy symbols Environmental science Doppler effect Civil and Structural Engineering
Zdroj:	Journal of Wind Engineering and Industrial Aerodynamics. 95:411-427
ISSN:	0167-6105
DOI:	10.1016/j.jweia.2006.08.005
Popis:	The authors’ group has been conducting full-scale measurements of wind velocities with Doppler sodars. It is very important to accurately assess the profiles of mean wind speeds and turbulence intensities in relation to terrain roughness. In this study, the profiles were evaluated for all data measured over a long period at a seashore and two inland sites. It is confirmed that for strong winds the profiles can be approximated by a single power law at altitudes between 50 and 340 m. The power law exponents of the mean wind speed profiles are approximately 0.1 for wind from the sea and 0.2–0.3 for wind blown over land. Those of the turbulence intensity profiles are approximately 0 and −0.2 to 0.4, respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::57eefad4a3eb5f480c7702199a9a8ce3 https://doi.org/10.1016/j.jweia.2006.08.005 Zobrazit plný text záznamu Full Text from ScienceDirect