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학술저널
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한국자동차공학회 International journal of automotive technology International journal of automotive technology Vol.4 No.4
발행연도
2003.12
수록면
157 - 164 (8page)

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An experimental and numerical study was performed to investigate the macroscopic and microscopic atomization characteristics of high-speed diesel spray issued from the common-rail injection system. For the experiments, spray visualization system and a phase Doppler particle analyzer system were utilized to obtain the spray atomization characteristics such as the process of spray development, spray tip penetration, and SMD distribution. In order to analyze the process of spray atiomization with KIVA-3 code, the TAB breakup model is changed to the KH-DDB competition model, which assumes the competition between the wave instability and droplet deformation causes the droplet breakup above the breakup length. The calculated results were also compared with the experiments in terms of spray tip penetration and SMD distribution. The results provide the process of spray development, axial and radial distribution of SMD, and calculated overall SMD as a function of time after start of injection.

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ABSTRACT

1.INTRODUCTION

2.EXPERIMENTAL APPARATUS AND PROCEDURES

3.KH-DDB COMPETITION MODEL

4.RESULTS AND DISCUSSIONS

5.CONCLUSIONS

ACKNOWLEDGEMENT

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