Browse > Article

Numerical Analysis of Mixing Flow in a Small-Scale Water Supply System  

Yoo, Young-Hyun (Department of Mechanical Engineering, Graduate School, Sunchon National University)
Ki, Hyun (Department of Mechanical Engineering, Graduate School, Sunchon National University)
Choi, Jong-Wook (School of Mechanical and Aerospace Engineering, Sunchon National University)
Kim, Sung-Cho (School of Mechanical and Aerospace Engineering, Sunchon National University)
Kim, Yong-Seon (Suck sung Co., LTD)
Lee, Yong-Ho (Department of Mechanical-Automotive Engineering, Chonnam National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.6, 2009 , pp. 460-466 More about this Journal
Abstract
The mixing method of water and chemicals is significant in a small-scale water supply system because drinking water should be supplied with a certain quantity of remaining chemicals maintained. In the present study, the concentration distribution and the mixing index were obtained from four models, which were to find out the optimal mixing method of water and chemicals. The two models brought the good mixing effects out of the four, one for providing chemicals from the center of water supply pipe and the other for setting up the semicircle block at the downstream of the chemicals-providing pipe. As a result, the mixing effect was found out to be increased due to the diffusion and the disturbance of flows. In conclusion, these numerical results are expected to contribute to designing the optimal mixing system.
Keywords
Concentration Distribution; Mixing Index; Flow Analysis; Small-Scale Water Supply System;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
1 Kim, Y., An, S., and Maeng, J., "The Effect of Karman Vortex for Mixing in a Micro-channel with an Oscillating Micro-stirrer," Trans. of the KSME(B), 30(2), 144-152(2006)
2 Cho, I. Y., Kim, B. K., Lee, 1. P., Lee, H. D., and Kim, S. H., "Comparison of the Dynamic Inverse Chlorine Models Considering the Diffusion Effect," J. Kor. Soc. Environ. Eng., 25(6), 716-722(2003)
3 Costin, D. C. and Synovec, E. R., "Measuring the transverse concentration gradient between adjacent laminar flows in a microfludic device by a laser-based refractive index gradient detector," Talanta, 58(3), 551-560(2002)   DOI   ScienceOn
4 Maeng, J., Cho, I., and Kim, B., "Prediction of Degree of Mixing for Insoluble Solution with Vortex Index in a Passive Micromixer," Trans. of the KSME(B), 29(2), 232-238(2005)
5 Jeong, E. H., Yoon, S. Y., and Kim, K. C., "Simultaneous Measurement of Velocity and Concentration Field in a Stirred Mixer using PIVILIF Technique," Trans. of the KSME(B), 27(4), 504-510(2003)
6 Kim, D. K., Bae, S. T., Kim, J. H., Kim, O. K., and Lee, Y. H., "A Study about Choice of Industrial Mixer's Impeller Type for Concentration Measurement Method and PIV," J. Kor. Soc. Marine Eng., 30(3), 413-419 (2006)
7 Lee, D. S., Kim, H. G., Ha, M. Y., Park, Y. H., and Park, I. M., "Mixing Effect by the Geometry of Static Mixer with Turbulent In-Situ Mixing," Trans. of the KSME(B), 29(12), 1307-1312(2005)
8 Suh, Y. K., "On the Problem of Using Mixing Index Based on the Concentration Dispersion," Trans. of the KSME(B), 30(8), 796-805(2006)
9 Beebe, J. D., Adrian, J. R., Olsen, G. M, Stremler, A. M., Aref, H., and Jo, B., "Passive mixing in microchannels: Fabrication and flow experiments," Mec. Ind., 2, 343-348(2001)
10 Shin, M. S., Kim, H. S., Jang, D. S., Lee, S. N., and Lee, Y. S., "A Numerical and Experimental Study on the Mixing Characteristics of Stratified Thermal Storage," Environ. Eng. Res., 8(1), 41-47(2003)   DOI   ScienceOn
11 Ansys CFX-Solver, Release 10.0 : modeling(2005)
12 Ansys CFX-Solver, Release 10.0 : Theory(2005)
13 Song, H. S., Kim, J. W., and Bae, B. W., "Chlorine Disinfection for Inactivating Indicator Microorganisms for Wastewater Treatment," Proceedings of the Korean Society of Environmental Engineers, Korean Society of Environmental Engineers, Daejeon, pp. 527-530(2003)