Focused Schlieren Flow Visualization Studies of Multiple Venturi Fuel Injectors in A High Pressure Combustor

摘要

Multiple venturi fuel injectors have been used to obtain uniform fuel distributions, better atomization and vaporization in the premixing/prevaporizing section of a lean premixed/prevaporized flame tube combustor. A focused Schlieren system, was used to investigate the fuel/air mixing effectiveness of various fuel injection configurations. The Schlieren system was focused to a plane within the flow field of a test section equipped with optical windows. The focused image plane was parallel to the axial direction of the flow and normal to the optical axis.