Experimental investigation on the spray performance of industrial swirl nozzle assisted by ion wind

A method for improving the swirl nozzle spray performance using electric field is proposed. A pair of symmetrical needle electrodes is arranged perpendicular to the fuel injection direction. The influence of the electrode height and distance, along with that of the voltage between electrode pair on...

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Bibliographic Details
Published in:Journal of electrostatics 2023-03, Vol.122, p.103798, Article 103798
Main Authors: Qiu, Chengxu, Zhou, Weixing, Chen, Zhe, Wu, Chuanwei
Format: Article
Language:English
Subjects:
Electric field
Ion wind
Swirl nozzle
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Summary:A method for improving the swirl nozzle spray performance using electric field is proposed. A pair of symmetrical needle electrodes is arranged perpendicular to the fuel injection direction. The influence of the electrode height and distance, along with that of the voltage between electrode pair on spray morphology are studied. The results show that when the electrodes are arranged at the fuel-film breakup height, the ion wind shortens the liquid film penetration length and increases the spray angle. The average fuel drop size is reduced by up to 35.8%. The distance between the electrodes also affects the atomization performance. •A method of assisting swirl nozzle atomization by electric field was proposed.•Spray performance is improved by the ionic wind between electrode pair.•The best electrode arrangement for assisting atomization was found.•Charge density on fuel droplet surface was investigated.
ISSN:0304-3886
1873-5738
DOI:10.1016/j.elstat.2023.103798