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Comparison of Spray Collapses from Multi-Hole and Single-Hole Injectors Using High-Speed Photography
Technical Paper
2020-01-0321
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, the differences between multi-hole and single-hole spray contour under the same conditions were compared by using high-speed photography. The difference between the contour area of multi-hole and that of single-hole spray was used as a parameter to describe the degree of spray collapse. Three dimensionless parameters (i.e. degree of superheat, degree of undercooling, and nozzle pressure ratio) were applied to characterize inside-nozzle thermodynamic, outside-nozzle thermodynamic and kinetic factors, respectively. In addition, the relationship between the three dimensionless parameters and the spray collapse was analyzed. A semi-empirical equation was proposed for evaluation of the degree of collapse based on dimensionless parameters of flash and non-flash boiling sprays respectively.
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Xinhui, L., Shen, Y., Gong, Y., Ma, X. et al., "Comparison of Spray Collapses from Multi-Hole and Single-Hole Injectors Using High-Speed Photography," SAE Technical Paper 2020-01-0321, 2020, https://doi.org/10.4271/2020-01-0321.Data Sets - Support Documents
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