Browse > Article
http://dx.doi.org/10.3795/KSME-A.2012.36.12.1643

Numerical Study of Design of Micro Bubble Generation Nozzle  

Kim, Hyun-Il (Energy Materials Division, Pohang Institute of Metal Industry Advancement)
Lee, Sang Min (Korea Institute of Science and Technology Information)
Shin, Myung Sun (SM-WATERTECH)
Lee, Jong Ho (SM-WATERTECH)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.36, no.12, 2012 , pp. 1643-1651 More about this Journal
Abstract
Recently, with increasing standards of living and income, environmental pollution has attracted increased interest. On account of a revision to water pollution regulations, the improvement of sewage disposal efficiency was studied. One of the ways to improve the sewage disposal efficiency is to increase the dissolved oxygen content of water in the water treatment tank. In this study, we suggest a nozzle design using a spiral and a crash mode for generating micro bubbles and thus increasing the dissolved oxygen content of water. The micro bubbles through the spiral and crash flows are generated in the nozzle. In the design of the crash mode, the development goal with regard to the bubble size was not achieved. On the other hand, a bubble size of $0-50{\mu}m$ accounted for 79.3% of all bubbles in the spiral mode. This study should contribute toward increasing the sewage disposal efficiency.
Keywords
Environment Pollution; Sewage Disposal; Micro Bubble; Spiral; Crash;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Jang, C. S. and Choi, S. M., 2000, "Application of the CFD to Internal Flow Analysis and Design of High Pressure Swirl Injector Nozzles," The Korean Society of Automotive Engineers, pp. 190-195.
2 Tu, J. Y., Yeoh, G. H., Park, G. C. and Kim, M. O., 2005, "On Population Balance Approach for Subcooled Boiling Flow Prediction," Transactions of the ASME, pp. 253-264.
3 Tu, J. Y. and Yeoh, G. H., 2006, "Numerical Modelling of Bubbly Flows with and Without Heat and Mass Transfer," Applied Mathematical Modelling, pp. 1067-1095.
4 Chung, H. T., Lee, C. H., Choi, B. I., Han, Y. S. and Ock, Y. W., 2006, "Application of CFD Technique to Performance Prediction of Spray Characteristics of Water-Mist Fire Suppression Nozzles," Korean Society of Computational Fluids Engineering, Vol. 11, No. 4, pp. 56-61.
5 Park, G. J., Kwak, H. S., Sohn, B. C. and Kim, K. J., 2007, "Numerical Investigation of the Flow in a Micronozzle for Seal Dispenser," Korean Society of Computational Fluids Engineering, pp. 236-242.
6 Chen, E., Li, Y., Cheng, X. and Wang, L., 2009, "Modeling of Low-Pressure Subcooled Boiling Flow of Water via the Homogeneous MUSIG Approach," Nuclear Engineering and Design, pp. 1733-1743.
7 Baik, D. S. and Lee, J. S., 2007, "Study on CFD Solution in Bidet Nozzle System," The Korea Academia-Industrial Cooperation Society, pp. 312-314.
8 Seo, J. H., Cho, H. G., Lee, D. H., Jung, S. C., Myung, R. S. and Huh, H. I., 2007, "A Computational Study on the Characteristics of Flowfields in Micronozzles," Korean Society of Computational Fluids Engineering, Vol. 12, No. 4,pp. 38-43.
9 Baik, J. S. and Kim, Y. J., 2007, "A Numerical on Flow Characteristics in HVOF Thermal Spray with Various Torch Shapes," Trans. of the KSME(B), pp. 3062-3067.
10 Lim, O. K., Choi, E. H. and Kim, S. S., 2007, "Optimum Design of Dual Orofoce Fuel Nozzle," Computational Structural Engineering Institute of Korea, Vol. 20, No. 4, pp. 407-416.
11 Lee, D. G., Cho, H. H., Cho, N. C. and Lee, C. M, 2009, "An Analysis Study on Desuperheater Valve Attachment on Multi Water Spray Nozzles," The Korean Solar Energy Society, pp. 74-79.