Influence of Stream Pipes on Airflow in an Air Duct

To ensure the uniformity and stability of the airflow in the air supply system using a new type of airflow sensor,a new method which uses the stream tubes instead of the orifice plate was reseached.By the CFD software FLUENT,the airflow fields in the duct with and without stream tubes as well as with orifice plate is simulated,respectively.The test setup is also built up,the air flow fields in the duct with and without stream tubes are described.Both the simulation and test results show that the installation of the stream tubes can improve the airflow field greatly,which is the most economical,convenient and suitable method to create a stable and uniform airflow field.