The wake characteristics of a hill-top wind turbine are investigated by means of large-eddy simulations (LESs) of stably stratified atmospheric boundary-layer (ABL) flows. All simulations are conducted with synchronized turbulent inflow data retrieved from an LES of diurnal cycle-driven boundary-layer flow over homogeneous surface. An investigation of different (weak, moderate, strong) stably stratified flow regimes passing over various 3 D hill configurations with heights up to 50 m reveals that the occurrence of flow separation not only depends on hill properties but also on the atmospheric stratification. The hill-top wake characteristics of all flow regimes are compared with wakes resulting from the same flow fields passing through the same wind turbine, however, sited on a homogeneous surface. For the same atmospheric stratification the flow over the hill impacts only the near-wake region. In contrast, the stratification impact on the hill-top wind-turbine wake is much more distinct, especially, in the far wake.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Wind-turbine wakes responding to stably stratified flow over complex terrain


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2018



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Deutsch







    Further studies on wind turbine generator wakes

    SFORZA, P. / SHEERIN, P. / SMORTO, M. | AIAA | 1980


    Dynamic Mode Decomposition of Stratified Wakes

    Nidhan, Sheel / Ortiz-Tarin, Jose Luis / Chongsiripinyo, Karu et al. | AIAA | 2019