Fluctuating velocity measurements in the turbulent wake of a wind turbine model

An experimental study of the turbulent wake of a wind turbine model was realized at the “Joaquim Blessmann” wind tunnel of the UFRGS. The turbine model was developed at the Universidade de Caxias do Sul and it represents a three blade turbine characterized by a NACA 4412 aerodynamic profile. Measurements of the velocity fluctuations were realized by hot wire anemometry. Complexity of the turbulent flow is evaluated by mean and fluctuating velocity profiles. The influence of the incident flow turbulence and the flow reconstructing process are analysed by the measurement results

Características da esteira turbulenta do modelo de um aerogerador

An experimental study of the turbulent wake of a wind turbine model was realized at the “Joaquim Blessmann” wind tunnel of the UFRGS. The turbine model was developed at the Universidade de Caxias do Sul and it represents a three blade turbine characterized by a NACA 4412 aerodynamic profile. Measurements of the velocity fluctuations were realized by hot wire anemometry. Complexity of the turbulent flow is evaluated by mean and fluctuating velocity profiles. The influence of the incident flow turbulence and the flow reconstructing process are analyzed by the measurement results.Um estudo experimental das características da esteira turbulenta a sotavento do rotor de uma turbina eólica foi realizado no túnel de vento “Joaquim Blessmann” da UFRGS. O modelo da turbina foi desenvolvido na Universidade de Caxias do Sul e representa um aerogerador de três pás caracterizadas por um perfil aerodinâmico NACA 4412. Medições das flutuações de velocidade foram realizadas com um anemômetro de fio quente. A complexidade do escoamento turbulento é avaliada a partir dos perfis de velocidade média e flutuantes. A influência da turbulência do escoamento incidente e o processo de recomposição do escoamento são avaliados através das medições realizadas

Fluctuating velocity measurements in the turbulent wake of a wind turbine model

An experimental study of the turbulent wake of a wind turbine model was realized at the “Joaquim Blessmann” wind tunnel of the UFRGS. The turbine model was developed at the Universidade de Caxias do Sul and it represents a three blade turbine characterized by a NACA 4412 aerodynamic profile. Measurements of the velocity fluctuations were realized by hot wire anemometry. Complexity of the turbulent flow is evaluated by mean and fluctuating velocity profiles. The influence of the incident flow turbulence and the flow reconstructing process are analysed by the measurement results