Abstract
A modified approach is suggested to achieve even flow distribution (i.e., the equality of flow distribution) in an open channel in water treatment plant. The suggested approach includes installing a longitudinal baffle with orifices in the main flow direction. To evaluate the efficiency of suggested model, both computational fluid dynamics (CFD) model and pilot tests were carried out. The pilot tests, which were scaled down to 1/8 of full scale, showed that the equalities of the flow distributions in the modified channels were up to 30% higher compared to those in the conventional channel when the equalities were quantified using the standard deviation of the flow distributions. In addition, the velocity contours computed by numerical simulation in the conventional full scale channel were compared with the velocity contours in the remodeled channel in order to verify the more even flow distribution in the modified one than that in the conventional one.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
H. K. Baek, N. S. Park, J. H. Kim, S. J. Lee and H. S. Shin, Journal of Water Supply: Research & Technology — AQUA-, 54(6), 349 (2005).
H. K. Baek and W. K. Kim, Rapid mixing and Flocculation basins, Composite Correction Program for Seoung-nam Water Treatment Plant, Korea Water Resources Corporation (2000).
J. L. Chao and R. R. Trussel, J. Environ. Eng., ASCE, 106, 321 (1980).
D. B. Larry, F. J. Joseph and P. A. David, Flow in Open Channels in Treatment plant of Environmental Engineers, Prentice-Hall (1984).
E. H. Jr. Herbert, Water Clarification Process Practical Design and Evaluation, Van Nostrand (1981).
ANSYS, CFX Application manual, United Kingdom: Oxfordshire (2006).
S.-U. Choi and H. Kang, Journal of Hydraulic Research, 42(1), 3 (2004).
F. Lopez and M. Garcia, Water Resources Research AGU, 34(9), 2341 (1998).
Athanassios A. Dimas, Nikolaos TH. Fourtiotis, Adreas P. Vouros and Alexander C. Demetracopoulos, Journal of Hydraulic Research, 46(6), 802 (2008).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lee, AK., Park, NS., Kim, S. et al. Physical modifications to improve a channel’s flow distribution. Korean J. Chem. Eng. 29, 201–208 (2012). https://doi.org/10.1007/s11814-011-0163-9
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11814-011-0163-9