Abstract
The article discusses the effect of viscosity, density, surface tension and flow rate of fuel on the Sauter mean diameter of fuel spray in an air-assisted atomizer. The atomization of the film is simulated by the Voluem-of-Fluid method in the axisymmetric approximation, whereby only the primary atomization of the film into ligaments are simulated correctly. However, as shown earlier, the sizes of these ligaments, multiplied by a constant, approximately equal the diameter of drops into which these ligaments would disintegrate if the calculation were carried out in a three-dimensional problem statement. The study had two objectives, the first of which was to obtain formulas describing the influence of fuel properties on the Sauter mean diameter, and to compare them with those previously published. The second aim was 1) to investigate the influence of the approach to determining the shift parameter of the Weibull distribution on the asymptotic Sauter mean diameter (which is defined as the Sauter mean diameter obtained using the approximating Weibull distribution under the condition that the shift parameter is zero) and 2) to compare with that which is directly calculated from the distribution obtained from the simulation.
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The data that support the findings of this study are available from UEC-Aviadvigatel JSC but restrictions apply to the availability of these data, which were used under license for the current study, and so are not publicly available. Data are however available from the authors upon reasonable request and with permission of UEC-Aviadvigatel JSC.
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Mingalev, S., Khudyakov, D. Numerical Study on Effects of Fuel Properties on Sauter Mean Diameter in Air-assisted Atomizer. Microgravity Sci. Technol. 34, 58 (2022). https://doi.org/10.1007/s12217-022-09986-9
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DOI: https://doi.org/10.1007/s12217-022-09986-9