A method of micrositing of wind turbine on building roof-top by using joint distribution of wind speed and direction, and computational fluid dynamics

作者：Ovgor Bavuudorj; Lee Sang Kwon; Lee Seungbae

来源：Journal of Mechanical Science and Technology, 2012, 26(12): 3981-3988.

DOI：10.1007/s12206-012-0897-2

• Building roof-top
• CFD
• Joint probability
• Micrositing

Urban wind turbines are recommended for installation on a building roof-top to capture more wind energy. It is critical to decide an exact location for the wind turbine installation on the roof-top area. In this paper a joint probability density function of wind speed and direction is proposed as a statistical model for wind distribution, and a CFD approach is taken to predict the wind acceleration effect by the geometry of the building. Singly Truncated Normal Weibull (TNW) PDF mixture (TNW-PDF) is used as the wind speed distribution function, and von Mises mixture distribution is utilized for the wind direction distribution. These two functions are jointly tested to accurately describe the wind database. The method proposed by Johnson and Wehrly is used to obtain angular-linear distributions for this purpose. The inevitable acceleration and secondary effects of building%26apos;s roof-top upon the wind distribution is assessed quantitatively by means of the CFD technique. The CFD simulation provides time-averaged wind speeds of various directions with their calculated probabilities at a specific location over the roof top. Thereby the micrositing method is suggested for determination of optimal location for the installation of small wind turbine in the urban roof-top environment.

• 出版日期2012-12