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Experimental Investigation of the Entrainment into Diesel Spray
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English
Abstract
The mixing process of fuel with the surroundings are necessary to verify combustion process and then to make a combustion model.
In this study, a single shot of diesel spray is injected through either a constant pressure injection system or bypass type injection system which has the same characteristics as the one of an actual engine.
Measurement are made on the gas velocity distribution around the spray and its time history using a hot wire anemometer. The gas flow direction is determined by the smoke tracer method.
In this investigation the axial and radial distributions of entrainment air are determined, and also their time histories are observed. Radial distribution of the entrainment velocity can be shown
ū(t) = CrA
and the entrainment coefficient αe is estimated to be a volume between 0.2 ∼ 0.3.
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Citation
Ha, J., lida, N., Sato, G., Hayashi, A. et al., "Experimental Investigation of the Entrainment into Diesel Spray," SAE Technical Paper 841078, 1984, https://doi.org/10.4271/841078.Also In
References
- Kuniyoshi H. Sato G. T. et al. Investigation on the characteristics of diesel fuel spray SAE Trans. 800968
- Ha J-Y. Sato G. T. et al. Investigation on the Initial part and the spray formation delay of diesel spray SAE paper 830451 1983
- Tanabe H. Sato G.T. et al. Experimental study on transient gas jet Proc. 19th FISITA 1 1982
- Ricou F. P. Spalding D.B. Measurements of entrainment by axisymmetrical turbulent jets J. Fluid Mech. 11 1962 21