Feasibility of Automatically Measuring of Large and Small Discharge in Open Channel Using Rectangular Sharp-Crested Weir

Xin Zhang; Peng Yan; Ling Hua; Chang Zhi Ji; Jia Zhen Li

doi:10.4028/www.scientific.net/AMM.71-78.4142

Paper Titles

Using Artificial Neuron Network on the Impact Characteristics Analysis of Free Overfall Flow
p.4124

Backfilling Filter Deployment for Groundwater Monitoring Well
p.4129

Temperature Control of Massive Concrete for Construction of Pier’s Base
p.4134

Smart Structure Based on Continuous Optical Fiber Sensing Technique (Review)
p.4138

Feasibility of Automatically Measuring of Large and Small Discharge in Open Channel Using Rectangular Sharp-Crested Weir
p.4142

Remeshing Technique for Three Dimensional Finite Element in ABAQUS
p.4147

Pipeline Product Quality Testing Based on Adaptive SIFT Matching Technology
p.4151

Study on Application of Support Vector Machine to Prediction of Blasting Vibration Velocity
p.4155

Decorative Mortise Slot Insulation Board Exterior Insulation System Integration and Quality Control of Construction Elements
p.4160

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 71-78Feasibility of Automatically Measuring of Large...

Feasibility of Automatically Measuring of Large and Small Discharge in Open Channel Using Rectangular Sharp-Crested Weir

Abstract:

Rectangular sharp-crested weir used for flow measurement in flume is limited by the minimum head since head- discharge relation of clinging flow is different from free flow. Hydraulic characteristics of clinging flow under low head are studied via experiments associated with simulation in six rectangular sharp-crested weirs with different geometric parameters. The results show that head-discharge relation is stable under clinging flow; head relation between clinging and free flow is linearly correlated at the same discharge in a bistable regime, existing discharge formula of free flow can be applied to clinging flow by means of head transform; the pressure on downstream weir plate is negative, much less than atmosphere pressure, and flow regime can be judged based on the pressure. It is feasible to automatically measure large and small flow using the simplest weir without head limitation.

You might also be interested in these eBooks

Frontiers of Green Building, Materials and Civil Engineering

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volumes 71-78)

Pages:

4142-4146

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.71-78.4142

Citation:

Cite this paper

Online since:

July 2011

Authors:

Xin Zhang, Peng Yan, Ling Hua, Chang Zhi Ji, Jia Zhen Li

Keywords:

Clinging Flow, Discharge Measurement, Flow in Open Channel, Head-Discharge Relation, Rectangular Sharp-Crested Weir

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] J. Qu, A.S. Ramamurthy, R. Tadayon et al.: Can J l of Civ. Eng Vol. 36(2009), p.1530–1534.

Google Scholar

[2] E.J. Finnemore and J.B. Franzini: Fluid mechanics with engineering applications, McGraw-Hill(2002), New York.

Google Scholar

[3] Xin Zhang, Lingjuan Yuan, Ruwu Peng et al.: Journal of Hydraulic Engineering Vol. 136 (2010), pp.385-390.

Google Scholar

[4] J.H. Ferziger and M. Peric: Computational method for fluid dynamics. 3rd ed. Springer-Verlag Berlin Heidelbeg(2002), New York.

Google Scholar

[5] P.K. Mohapatra, S. Murty Bhallamudi and Eswaran: International Journal for Numerical Methods in Fluids Vol. 36(2001), pp.165-184.

DOI: 10.1002/fld.126

Google Scholar

[6] V. Maronnier, M. Picasso and Rappa: International Journal for Numerical Methods in Fluids Vol. 42(2003), pp.697-716.

Google Scholar

[7] R.I. Issa: Journal of Computational physics, Vol. 62(1986), pp.40-65.

Google Scholar

[8] R. Raju: Scale Effects in Analysis of Discharge Characteristics of Weirs and Sluice Gates, Symposium on Scale Effects in Modelling Hydraulic structures(1984), Germany, September 3~6.

Google Scholar