Numerical Research on Airflow-Controlled Swing Burners

A new-type burner is presented which used transverse airflow to control the air-jet angle from the burner instead of traditionally used swing burner which used mechanical components to control the installation angle of the burner. Jamming problems of traditional swing burners can be avoided. The structure and working principle of the airflow-controlled swing burners are also introduced. Numerical simulation by means of a ¿-¿ turbulence model is carried out. The simulation model is validated by a semi-empirical formula of other air-jet. The effect of the jet position and the momentum ratio of the controlling airflow to the main airflow on the deflective angle of the main airflow is discussed. The simulation results show that the airflow-controlled swing burner can control the swing angle of the air jet as an alternative to the traditional mechanically operated swing burner. And the deflective angle can be controlled by different momentum ratios of the controlling airflow to the main flow of the burner.