본 논문에서는 풍동 내에 설치된 고층 건축물 모형의 정면의 양 모서리에 코너 기류제어기를 설치하고, 코너 기류제어기의 회전 속도와 자유흐름 속도의 비인 풍속비에 따라 건축물 표면의 압력이 어떻게 변화하는지를 조사하였다. 코너 기류제어기가 풍상측에 설치되었을 때 정압을 받는 풍상면인 정면의 평균 풍압 및 최대 풍압은 풍속비에 따라 거의 변화가 없었으나, 부압이 발생하는 풍하면인 배면 및 측면의 최소 풍압은 풍속비가 증가함에 따라 감소하는 경향을 보여 주었다. 특히 풍하면인 배면에서 최소 풍압의 감소량은 측면에 비해서 더 컸으며, 풍속비가 0.98일 때 배면에서의 최소 풍압의 감소량은 약 36%로 크게 발생하였다. 또한 코너 기류제어기가 풍상측에 설치되었을 때 부압이 발생하는 풍하면인 배면 및 측면의 평균 풍압 및 rms 풍압도 풍속비가 증가함에 따라 감소하는 경향을 보여 주었다. 특히 풍하면인 배면에서 평균 풍압 및 rms 풍압의 감소량은 측면에 비해서 더 컸으며, 풍속비가 0.98일 때 배면에서의 평균 풍압 및 rms 풍압의 감소량은 각각 약 34% 및 37%로 크게 발생하였다.
In the paper, corner air controllers in both edges of the front surface of a tall building model in a wind tunnel were installed, and the variations of wind pressures on the surface of the tall building were investigated according to the wind velocity ratio, which is the ratio of the rotating velocity of corner air controllers and the free stream velocity. When corner air controllers were installed at the windward side, the average pressure and the maximum pressure of the front surface, that is the windward side, in which positive pressures occurred, were similar when the wind velocity ratio varied. However, the minimum pressures of both the rear surface, that is the leeward side, and the side surface, in which negative pressures occurred, decreased as the wind velocity ratio increased. In particular, the decrease rate of the minimum pressure on the rear surface, that is the leeward side, was larger than that on the side surface, and was about 36% when the wind velocity ratio was 0.98. Also, when corner air controllers were installed at the windward side, the average pressure and the rms pressure of both the rear surface, that is the leeward side, and the side surface, in which negative pressures occurred, decreased as the wind velocity ratio increased. In particular, the decrease rate of the average pressure and the rms pressure on the rear surface, that is the leeward side, were larger than those on the side surface, and were about 34% and 37%, respectively when the wind velocity ratio was 0.98.