Wind turbines harness energy from the wind. In the downstream of the wind, there is a wake generated from the wind turbine, where the wind speed is reduced. As the flow proceeds downstream, there is a distribution of the wake, and then the wake gradually recovers towards free stream conditions. 栽he wake effect is the aggregated influ-ence on the energy production of the wind farm, which results from the changes in wind speed caused by the impact of the turbines on each other.