For mining fans, the convexity of the partition is directly related to the pumping efficiency of the fan. Because the convexity of the partition will make the airflow field very irregular, making the pumping effect not good. Changing the shape of the air extraction baffle and adopting the shape of the structure is very helpful for improving the air extraction efficiency of the mine fan, and this is also a widely used method. The extraction efficiency of mining fans will also be affected by other factors such as the outside world. In the fluctuating air flow field, it will lead to fluctuations in the extraction efficiency of the fan. Once the circumferential uniformity and radial uniformity are destroyed, it will stimulate A stalled view of a wind turbine. This is why we need to control the airflow phenomenon in time to ensure the stability of the machine.