Sonic and supersonic nozzle testing

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This Engage grant is designed to address a unique and challenging design issue for Hatch related to the development of a new concentrate burner lance. Presently, advanced simulation tools, such as computational fluid dynamics (CFD) are widely employed to design various technologies; however, there is still a need for experimentation, and consultation with outside experts when designing certain components. The present proposal focuses on specially design supersonic nozzles to achieve high momentum ratios within the dispersion air of a concentrate burner lance. The project will focus on the characterization of current Hatch nozzle designs, and develop recommendations that will help Hatch complete the design of supersonic nozzles for the concentrate burner lance. For this purpose, particle image velocimetry measurements of the flow field will be performed for a range of nozzle design. This will assess the performance of the nozzles and quantify the effect of the thin boundary layers found in the small converging/diverging channels of the nozzles.