Use of brink depth in discharge measurement

2008-01-01
Tiğrek, Şahnaz
Firat, C. Ersen
Ger, A. Metin
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
154
views
0
downloads
The behavior of free surface flow at a rectangular free overfall is studied experimentally to obtain a relation between the brink depth and the flow rate. A series of experiments were conducted in a tilting flume with wide range of flow rates covering subcritical, critical, supercritical regimes, and two different roughnesses in order to develop a relationship between the discharge and the brink depth. An equation is proposed to determine the flow rate using the brink depth for a channel of known roughness and bed slope. Introduction
Agricultural and Biological Sciences (miscellaneous), Civil and Structural Engineering, Water Science and Technology
https://hdl.handle.net/11511/52584
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING
Graduate School of Natural and Applied Sciences, Article

Suggestions

Closure to "Broad-Crested weirs with rectangular compound cross sections" by M. Gogus, Z. Defne, and V. Ozkandemir
Goegues, Mustafa; Defne, Zafer; Oezkandemir, Volkan (American Society of Civil Engineers (ASCE), 2007-11-01)
A series of laboratory experiments was performed in order to investigate the effects of width of the lower weir crest and step height of broad-crested weirs of rectangular compound cross section on the values of the discharge coefficient, the approach velocity coefficient, and the modular limit. For this purpose, nine different broad-crested weir models with rectangular compound cross sections and a model with a rectangular cross section were tested in a horizontal laboratory flume of 11.0 m length, 0.29 m ...
Seepage from a rectangular ditch to the groundwater table
Korkmaz, Serdar; Onder, Halil (American Society of Civil Engineers (ASCE), 2006-05-01)
This study presents both a numerical and an experimental solution to seepage from a rectangular ditch or elongated pond to a groundwater table of infinite horizontal extent. Because of the unknown location of the free surface, the flow domain is transformed into the complex potential plane using the inverse formulation method. where the free surface becomes a straight line. The method of finite differences was used to solve the boundary value problem. The problem was also investigated experimentally using a...
New Theoretical solution of stage-discharge relationship for slit weirs
FERRO, Vito; Aydın, İsmail (American Society of Civil Engineers (ASCE), 2018-03-01)
In this paper, the flow-process of a slit weir was analyzed on the basis of a theorem of dimensional analysis and incomplete self-similarity theory. The theoretically deduced stage-discharge formula then was calibrated using experimental data obtained for a ratio between the weir and the channel width, ranging from 0.05 to 0.25. The deduced stage-discharge relationship allowed measuring discharge values characterized by errors that, for 98% of the measured values, were less than or equal to ±5%. The perform...
Nonlinear mixing length model for prediction of secondary currents in uniform channel flows
Aydın, İsmail (American Society of Civil Engineers (ASCE), 2009-01-29)
A nonlinear turbulence model for numerical solution of uniform channel flow is presented. Turbulent stresses are evaluated from a nonlinear mixing length model that relates turbulent stresses to quadratic products of the mean rate of strain and the mean vorticity. The definition of the mixing length, based on a three-dimensional integral measure of boundary proximity, eliminates the need for solution of additional transport equations for the turbulence quantities. Experimental data from the literature for c...
An investigation of the flow and scour mechanisms around isolated spur dikes in a shallow open channel: 2. Conditions corresponding to the final stages of the erosion and deposition process
Köken, Mete (American Geophysical Union (AGU), 2008-08-05)
Large eddy simulation (LES) is used to investigate the flow around a vertical spur dike in a straight channel with equilibrium scour bathymetry and the scour mechanisms in the later stages of the erosion deposition process. The equilibrium bathymetry is obtained from an experiment conducted at the same relatively low channel Reynolds number (Re = 18,000). Flow visualizations are used to complement the information obtained from the numerical simulation. The present investigation demonstrates that large-scale...
Citation Formats
Ş. Tiğrek, C. E. Firat, and A. M. Ger, “Use of brink depth in discharge measurement,” JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING, pp. 89–95, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52584.
METU IIS - Integrated Information Service open@metu.edu.tr