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Measurement of Droplet Diameter and Fuel Concentration in a Non-Evaporating Diesel Spray by Means of an image Analysis of Shadow Photographs
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English
Abstract
A new method was developed which measures the atomization characteristics of a non-evaporating, axisymmetric diesel spray: The film image density of the high speed focused shadow photographs of a spray was analyzed based on the incident light extinction principle, and the Sauter mean diameter and the fuel concentration distribution were calculated from the image data and the measured injection rate with the help of the onion peeling model. The measured Sauter mean diameter showed good agreement with the diameter measured by the conventional immersion method, and also the measured fuel concentration distribution along the spray axis was proved to coincide well with the predicted result by Che one dimentional quasi-steady jet model except at a region near the spray tip.
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Authors
- Takeyuki Kamimoto - Tokyo Institute of Technology Dept. of Mechanical Engineering
- Soo Kil Ahn - Tokyo Institute of Technology Dept. of Mechanical Engineering
- Young June Chang - Tokyo Institute of Technology Dept. of Mechanical Engineering
- Haruki Kobayashi - Tokyo Institute of Technology Dept. of Mechanical Engineering
- Shin Matsuoka - Tokyo Institute of Technology Dept. of Mechanical Engineering
Citation
Kamimoto, T., Ahn, S., Chang, Y., Kobayashi, H. et al., "Measurement of Droplet Diameter and Fuel Concentration in a Non-Evaporating Diesel Spray by Means of an image Analysis of Shadow Photographs," SAE Technical Paper 840276, 1984, https://doi.org/10.4271/840276.Also In
References
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