Influence of Roof Shape on Micrositing of Rooftop Wind Turbine in the Building Group

Hou, Yali

doi:10.3901/jme.2018.02.191

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…First, the accuracy of different turbulence models in building wind environment numerical simulation was compared 41 . The numerical analysis method of wind turbine micro-site selection in urban buildings was summarized 42 , discussed, and analyzed 43 . The specific installation height of wind turbine at different types of roofs 44 was also discussed and analyzed.…”

Section: Introductionmentioning

confidence: 99%

Influence of wind energy utilization potential in urban suburbs: a case study of Hohhot

Wang

Chen

Bai

et al. 2021

Sci Rep

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Given the increasing trend of using wind energy in cities, the utilization of distributed wind energy in cities has been widely concerned by researchers. The related research on the micro-site selection of wind turbines, a sub-project of the Task27 project of the International energy agency, was continued in this paper. The wind speed data of an observation station near Hohhot, Inner Mongolia, with a range of 10–19 m were collected. The evaluation included wind direction, Weibull parameter characteristics, and turbulence intensity. The potential energy output in 10 different heights was estimated using commercial horizontal and vertical axis wind turbines of the same power. Results showed that the following: the three-parameter Weibull distribution model can well describe the statistical properties of the wind speed in this site. The wind speed distribution model constructed from extrapolation parameters reflects the wind speed statistical properties out of detection positions to a certain extent. The wind energy density of the vertical axis wind turbine is slightly lower than that of the horizontal axis wind turbine. Furthermore, more power can be generated from March to May.

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Section: Introductionmentioning

confidence: 99%

Influence of wind energy utilization potential in urban suburbs: a case study of Hohhot

Wang

Chen

Bai

et al. 2021

Sci Rep

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Experimental study on rooftop flow field of building based on the operation of vertical-axis wind turbines

Hu,

Wang,

Yang

et al. 2024

Journal of Renewable and Sustainable Energy

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Vertical-axis wind turbines (VAWTs) demonstrate good adaptability for harnessing wind energy on the building rooftops. However, knowledge gaps still exist in the understanding of the wind resources on the rooftop, the operation of VAWTs, and its effect on the wind field. To add new knowledge on this subject, the operation of wind turbines modeled by the NACA0018 airfoil on the rooftop of a building is experimentally studied via wind tunnel. The results indicate that flow above the rooftop of building shows an obvious speed reduction due to the blunt body effect of the turbines, and the turbulence intensities are dramatically enhanced. The different tip-speed ratios, wind directions, and installation locations of wind turbine have significant effect on flow field on the roof. Due to the flow characteristics above the rooftop, the power spectral density of the fluctuating wind speed exhibits high energy below the top position of the VAWT on the rooftop. Additionally, the wind profiles and probability distribution of the wake of VAWTs on the rooftop are analyzed and mathematically fitted for quantifying wind field characteristics rooftop turbines on the roof. For the VAWTs investigated in this study, the impacts of the operation of VAWTs on the wind field are non-negligible on the roof of building. The findings of this study will provide valuable insights for the optimal placement of VAWTs and utilization of wind energy on the rooftops.

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The effects of turbulent air streams and corrugated surfaces on the output of a wind turbine

Al-Shnynat

Duwairi

2022

Advances in Mechanical Engineering

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It is challenging to select the area that best fit the installation of wind turbines within complex and forestry terrains. This study aims to highlight the effects of corrugated surfaces on the characteristics of a turbulent wind flow, and on the performance of a wind turbine installed within this topography. It is hypothesized that a sinusoidal wave can be utilized to describe a corrugated surface. The physical stance was analytically modeled based on conservation principles of mass and mechanical energy. Model’s mathematical equation was then solved, by adopting finite difference method and MATLAB’s Bvp4c algorithm. The results show that wind and turbine related parameters are affected by the evolved atmospheric Boundary Layer (ABL) and differed according to the location within the boundary layer (BL) from the leading part to the edge, where BL’s retarding effects diminishes. The study also proves that velocity and turbine harvested power are inversely proportional to the corrugated surface’s amplitude, and to the wind’s turbulence ratio. On the other hand, it demonstrates a direct proportion between boundary layer thickness (BLT) and corrugated surfaces-related parameters. To the contrary of previous works, this study concentrated on capturing interaction effects between wind turbine, atmospheric inflow, and complex terrains.

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Influence of Roof Shape on Micrositing of Rooftop Wind Turbine in the Building Group

Cited by 3 publications

References 5 publications

Influence of wind energy utilization potential in urban suburbs: a case study of Hohhot

Influence of wind energy utilization potential in urban suburbs: a case study of Hohhot

Experimental study on rooftop flow field of building based on the operation of vertical-axis wind turbines

The effects of turbulent air streams and corrugated surfaces on the output of a wind turbine

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