Browse > Article
http://dx.doi.org/10.5762/KAIS.2017.18.2.31

Optimization of ejector for swirl flow using CFD  

Kang, Sang-Hoon (NK. CO., LTD.)
Park, Young-Chul (Division of Mechanical Engineering, Dong-A University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.18, no.2, 2017 , pp. 31-37 More about this Journal
Abstract
This paper investigates the effect of the rotational motion of a driving fluid generated by a rotational motion device at the inlet of a driving nozzle for a gas-liquid ejector, which is the main device used for ozonated ship ballast water treatment. An experimental apparatus was constructed to study the pressure and suction flow rate of each port of the ejector according to the back pressure. Experimental data were acquired for the ejector without rotational motion. Based on the data, a finite element model was then developed. The rotational motion of the driving fluid could improve the suction efficiency of the ejector based on the CFD model. Based on the CFD results, structure optimization was performed for the internal shape of the rotation induction device to increase the suction flow rate of the ejector, which was performed using the kriging technique and a metamodel. The optimized rotation induction device improved the ejector efficiency by about 3% compared to an ejector without rotational motion of the driving fluid.
Keywords
CFD; Ejector; Kriging; Optimization; Swirl;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Witte, J.H., "Efficiency and design of liquid-gas ejector", British-chemical Engineering, Vol. 10, No. 9 pp. 602-607, 1965.
2 G. H. Park, S. J. Kwon, "INTERNAL FLOW PROPERTIES AND THRUST CHARACTERISTICS OF AXI-SYMMETRIC ANNULAR BELL TYPE EJECTOR-JET", Journal of Computational Fluids Engineering, Vol. 12, No. 2, pp. 46-50, 2007.
3 H. M. Jeong, T. Utomo, Z. H. Jin, H. S. Chung, "A CFD Analysis on the Gas-Liquid Ejector", Journal of The Korea Society for Power System Engineering, Vol. 12, No. 1, pp. 28-34, 2008.
4 S. B. Mun, H. K. Choi, J. H. Choi, H. J. Kwon, K. K. Kim, S. H. Choi, "Experimental Study for the Development of New Type Water Ejector", Journal of the Korean Society of Marine Engineering, Vol. 30, No. 6, pp. 677-684, 2006.
5 S. Y. Jeong, K. B. Lee, S. H. Rhi, "Secondary Flow Characteristics of Liquid Ejector According to the Nozzle Diameter Change", Journal of Industrial Science and Technology Institute, Vol. 29, No. 2, pp. 7-11, 2015.
6 Y. J. Kim, S. H. Park, K. H. Lee, Y. C. Park, "Lightweight Design of an Outer Tie Rod Using Meta-Model Based Optimization Technique", Journal of the Korea Academia-Industrial cooperation Society, Vol. 16, No. 11, pp. 7754-7760, 2015. DOI: https://doi.org/10.5762/KAIS.2015.16.11.7754   DOI
7 Y. H. Lee, M. O. Kim, C. G. Kim, Y. T. Kim, "The evaluation of performance and flow characteristics due to the length of throat and diffuser for ship's ejector", Journal of the Korean Society of Marine Engineering, Vol. 38, No. 1, pp. 31-38, 2014. DOI: https://doi.org/10.5916/jkosme.2014.38.1.31   DOI