Study on the Airflow Characteristics of the Airfoil Ventilation Fan Based on Coanda Effect

摘要

The airfoil ventilation fan based on Coanda effect was studied, which was simulated by Fluent software. The inducing velocity was considered as an important influence factor on the characteristic of the flow field. The paper reports the results of the velocity distribution in the flow field and the induction rate of the model in different inducing velocities, which shows that with the inducing velocity increasing, the velocity contour develops further and the coverage area becomes larger along the positive X axis, and the induction rate of airfoil ventilation fan decreases when the inducing velocity reduces and approaching a steady value when the reducing velocity is greater than 25m/s. Through the change law of the airfoil inducing rate is explored, the article will give a reference for the choice of inducing velocity in the optimization of the airfoil ventilation fan, and reduce the fan of energy conservation.