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Atomization and Sprays
Fator do impacto: 1.262 FI de cinco anos: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimir: 1044-5110
ISSN On-line: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v14.i2.60
pages 175-190

CHANGE OF ATOMIZATION PERFORMANCE WITH SELECTION OF NOZZLE MATERIALS IN ELECTROHYDRODYNAMIC SPRAYING

Myoung Chan Kim
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
Sang Yong Lee
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291, Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
Wamadeva Balachandran
Brunel University, UK

RESUMO

In the present study, a series of experiments has been conducted for proper selection of nozzle materials to generate fine liquid (water) drops ranging between 30 and 450 μm through the electrohydrodynamic atomization process. The spindle mode was the primary drop-generation mode considered in this experimental work. Three nozzles made of different materials were prepared and tested: a stainless steel tube, and plain and metal (gold)-coated (except for the tip portion) silica tubes. The drop size distribution changed with the electrical conductivity and the surface wettability of the tubes, as well as with other parameters such as the liquid flow rate and the capillary tube voltage. Among these nozzles, the metal-coated silica tube showed the best performance in generating uniform, fine drops over a wide range of tube voltage because the pivoting motion and the sporadic corona could be suppressed.


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