The Influence of Deflector Form on Airflow Organization in Prefabricated Duct Elbows Based on CFD Simulation

There are different types of elbows in the duct system, including inside and outside arc type, inside arc outside right angle type and inside diagonal outside right angle type elbows, which are commonly used. The uniformity of the airflow organization inside large elbows is a key factor in determining the size of the system resistance. the energy consumption and the noise of air conditioning and ventilation. Therefore, a certain deflector is usually set up inside the elbow.In this paper, CFD simulation technology is used to predict and compare the air distribution of the different types of large elbows. The conclusions of this study intend to serve as a reference for similar projects in the future.