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Experimental research on flash boiling spray of dimethyl ether

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Abstract

The high-speed digital imaging technique is applied to observe the developing process of flash boiling spray of dimethyl ether at low ambient pressure, and the effects of nozzle opening pressure and nozzle hole diameter on the spray shape, spray tip penetration and spray angle during the injection are investigated. The experimental results show that the time when the vortex ring structure of flash boiling spray forms and its developing process are determined by the combined action of the bubble growth and breakup in the spray and the air drag on the leading end of spray; with the enhancement of nozzle opening pressure, the spray tip penetration increases and the spray angle decreases. The influence of nozzle hole diameter on the spray tip penetration is relatively complicated, the spray tip penetration is longer with a smaller nozzle hole diameter at the early stage of injection, while the situation is just opposite at the later stage of injection. This paper establishes that the variation of spray angle is consistent with that of nozzle hole diameter.

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Authors and Affiliations

  1. China Ship Development and Design Center, Wuhan, 430064, China

    Peng Zhang

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  1. Peng Zhang
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Correspondence to Peng Zhang.

Additional information

Peng Zhang is an engineer at China Ship Development and Design Center. He has been the investigator of a large variety of funded research work regarding the design and optimization of marine power system. His research interests include simulation of marine power system, marine diesel technology, program evaluation of marine power system, design of marine power control system and so on. He has published over 14 papers about the research field mentioned above.

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Zhang, P. Experimental research on flash boiling spray of dimethyl ether. J. Marine. Sci. Appl. 13, 416–421 (2014). https://doi.org/10.1007/s11804-014-1268-4

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  • DOI: https://doi.org/10.1007/s11804-014-1268-4

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