On the Operational Characteristics of a Multi-annular Swirl Burner

摘要

Further experimental results are described from the multi-annular swirl burner (MASB). The burner comprises a plurality of concentric annular divergent nozzles with the inner end of each nozzle aligned substantially with the outer end of the adjacent nozzle. The MASB makes use of the principle that under turbulent conditions high volumetric heat release rates can be achieved by matching the concentrations and directions of flow of reactants in such a way that regions of high fuel concentration overlap regions of large shear stresses in the flow. Wider stability limits and better mixing of reactants are found in this MASB compared to the conventional type of single annular swirl burner.