Browse > Article
http://dx.doi.org/10.11001/jksww.2013.27.2.177

Hydraulic Characteristics in the Movable Venturi Flume with Circular Cone  

Kim, Dae Geun (목포대학교 공과대학 토목공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.27, no.2, 2013 , pp. 177-184 More about this Journal
Abstract
This study analyzed the hydraulic characteristics of a venturi flume with a circular cone using a 3-D numerical model which uses RANS(Reynolds-Averaged Navier-Stokes Equation) as the governing equation. The venturi flume with the circular cone efficiently measures the discharge in the low-flow to high-flow range and offers the advantage of accurate discharge measurements in the case of a low flow. With no influence of the tail-water depth, the stage-discharge relationship and the flow behaviors were analyzed to verify the numerical simulation results. Additionally, this study reviewed the effect of the tail-water depth on the flow. The stage-discharge relationship resulting from a numerical simulation in the absence of an effect by the tail-water depth showed a maximum margin of error of 4 % in comparison to the result of a hydraulic experiment. The simulation results reproduced the overall flow behaviors observed in the hydraulic experiment well. The flow starts to become influenced by the tail-water depth when the ratio of the tail-water depth to the total head exceeds approximately 0.7. As the ratio increases, the effect on the flow tends to grow dramatically. As shown in this study, a numerical simulation is effective for identifying the stage-discharge relationship of a venturi flume with various types of venturi bodies, including a venturi flume with a circular cone.
Keywords
3-D numerical model; RANS; venturi flume with a circular cone; tail-water depth; stage-discharge relationship;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Hager, W.H. (1988) Venturi flume of minimum space requirements, J. of Irrigation and Drainage Engineering, 114(2), pp. 226-243.   DOI   ScienceOn
2 Kim, D .G., Kim, S.M., and Park, W.C. (2010) Numerical analysis of flow and settling efficiency in a sedimentation basin, J. of Korean Society of Water and Wastewater, 24(6), pp. 713-722.
3 Kim, D .G., Lee, J.H., and Seo, I.W. (2004) A numerical simulations on the flow over ogee spillway with pier, J. of Korea Water Resources Association, 37(5), pp. 363-373.   과학기술학회마을   DOI   ScienceOn
4 Kim, N .I. (2003) Investigation of scale effects of hydraulic model for dam spillway using 3-D CFD model, Ph.D dissertation, Seoul National University, Seoul, Korea.
5 Flow Science (2007) Flow-3D (Theory Manual), Los Alamos, NM.
6 Hager, W.H. (1986) Modified, trapezoidal venturi channel, J. of Irrigation and Drainage Engineering, 112(3), pp. 225-241.   DOI   ScienceOn
7 Hager, W.H. (1999) Wastewater hydraulics, Springer, Berlin.
8 Ho, D. K.H., Boyes, K.M. and Donohoo, S.M. (2001) Investigation of spillway behavior under increased maximum flood by computational fluid dynamics technique, 14th Australasian Fluid Mechanics Conference, Adelaide University, Adelaide, Australia.
9 Kohler , A. and Hager, W.H. (1997) Mobile flume for pipe flow, J. of Irrigation and Drainage Engineering, 123(1), pp. 19-23.   DOI   ScienceOn
10 Samani, Z., Jorat, S. and Yousaf, M. (1991) Hydraulic characteristics of circular flume, J. of Irrigation and Drainage Engineering, 117(5), pp. 558-566.   DOI
11 Savage , B.M. and Johnson, M.C. (2001) Flow over ogee spillway: Physical and numerical model case study, Journal of Hydraulic Engineering, 127(8), pp. 640-649.   DOI   ScienceOn
12 Yakhot , V., Orszag, S.A., Thangam, S., Gatski, T.B. and Speziale, C.G. (1992) Development of turbulence models for shear flows by a double expansion technique, Physics of Fluids, 4(7), pp. 1510-1520.   DOI