Air flow split control by fluidic diverter for fluidically controlled staged jet engine burner

Abstract

To investigate flow split control performance of fluidic diverter, two-dimensional CFD analysis was carried out. The fluidic diverter is supposed to use as a flow split ratio control device in an air blast staged burner. The flow split ratio obtained by CFD analysis was compared to that of liquid flow test. They were agreed with each other. A method to calculate mass flow in outlet channel of the fluidic diverter was applied to the CFD results. The method was used on the experiment of the fluidically controlled staged burner to estimate mass flow rates in channels in the burner. The result showed the method is accurate. One more CFD analysis was carried out to simulate actual fluidic burner and the result was compared to a measurement of the burner in atmospheric pressure. The results were slightly different due to the model shapes: two-dimensional and three-dimensional.