ICLASS 97
Proceedings of the Seventh International Conference on Liquid Atomization and Spray Systems

ISBN Print: 89-950039-2-8

Computational Analysis of Swirl Atomizer Internal Flow

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DOI: 10.1615/ICLASS-97.1070
pages 868-875

John Joss Chinn School of Mechanical, Aerospace, and Civil Engineering, University of Manchester, University of Manchester Institute of Science and Technology (UMIST), Sackville Street, M60 1QD, UK

Andrew J. Yule Spray Research Group (SRG), Insititute of Materials Research (IMR), School of Computing, Science and Engineering, University of Salford, Manchester, UK; Thermofluids Division, Department of Mechanical Engineering, UMIST

Аннотация

The objective of this paper is to describe a methodology for estimating the size and shape of the air core, and the velocity field, within pressure swirl atomizers using a Computational Fluid Dynamics (CFD) code, FLUENT. The calculated air core topology together with the axial and tangential velocity components of the flow within the atomizer and the discharge coefficient are all compared with their experimentally determined counterparts with reasonable agreement. The investigation shows complexities of the internal flow pattern that have not been described in previous work. The modelling approach provides a new method for designing atomizers.

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