Research Of The Influence Of The Wind Turbine On The Atmosphere Structure Under Different Conditions

Due to the need of environmental protection and energy structure optimization,wind power generation as an important part of renewable energy has been rapidly developed in recent years.When we concerned about the advantage of wind power generation,the negative impact on the climate environment should not be ignored.The wind power generation take advantage of wind in atmospheric boundary layer,would cause the atmospheric energy loss.And wind turbine rotation will produce disturbance to the atmospheric flow,it will break the original balance of the atmosphere.So,it has important significance in analysis of the influence of wind turbine on the atmospheric structure.This paper established the wind field model by numerical simulation methods,combined with the characteristics of flow and atmospheric turbulence theory,conducted the research of the influence of wind turbine operation on the air flow under the different conditions.First simulated the changes in velocity,temperature,turbulence at different temperature stratification conditions of single wind turbine.The simulation results show that in the night of stable condition,the wind turbine rotation will lead to the occurrence of near surface area warming and high altitude area cooling phenomenon;and in the daytime of unstable stratification or neutral conditions,wind turbine rotation will make the near surface high temperature region had cooled,while temperature increased in high altitude region.These phenomena indicate that the operation of the wind turbine will cause some disturbance to the atmospheric temperature stratification,and change the original structure of the atmosphere.And then the multiple wind turbine flow field simulation results show that both sequence or staggered arrangement,velocity,temperature and turbulence has dramatic changes compared to the single wind turbine.And the effects of the turbulence intensity in vertical direction of the greater height,the atmospheric boundary layer influenced region has expanded.Finally,with the increase of surface roughness,wind speed is gradually reduced,and the rate of recovery is gradually reduced.The turbulence intensity also increases as the surface roughness increases,causing turbulence will become more disordered.