Abstract
High-speed particle beams have found extensive applications in physical and chemical characterization of airborne particles. Expanding a particle-laden gas through an orifice into an evacuated chamber may generate these beams. Such particle inlets transmit a narrow particle size range, and this optimal size range strongly depends on the nozzle geometry and operating conditions. In this work, the choked flow through the primary focusing element is simulated using the CFD code FLUENT to seek an understanding of the mechanisms behind the formation of particle beams and the governing parameters. The focusing process is simulated to validate experimental results for existing inlet geometries and further used to evaluate novel inlet geometries that obtain higher transmission and focusing efficiencies. The best geometries yield particle transmission rates that are about 13 times higher than current designs.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.