Bed Resistance Investigation for Manning's and Chezy's Coefficients

Authors

  • Bashir Muhtar  Department of Civil Engineering, Infrastructure University Kuala Lumpur Malaysia
  • Manal M. A. Albayati  Department of Civil Engineering, Infrastructure University Kuala Lumpur Malaysia

Keywords:

Velocity, Discharge Coefficient, Flow Resistance, Open Channel Flow

Abstract

Weirs, notches flumes and gates have been used for ages to determine discharges in open channels. In this study, laboratory experiments were conducted to investigate the coefficient of discharge for different beds and then comparing Chezy's and Manning’s coefficients. Using two different slopes, five different discharges and three kinds of roughness. Based on the investigation, it was discovered that discharge coefficient ranges between 0.4 to 0.9. Coarse aggregates were found to have an effect on discharge coefficient and manning was found to decrease with increase in discharge and velocity. Velocity increase with the flow under the unsubmerged condition for the corresponding roughness coefficient decreases with the increase velocity. Vegetative roughness coefficient tends to remain constant and rises as the submergence starts to occur.

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International Journal of Scientific Research in Science, Engineering and Technology

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Published

2016-12-31

Issue

Volume 2, Issue 6, November-December-2016

Section

Research Articles

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This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
Bashir Muhtar, Manal M. A. Albayati, " Bed Resistance Investigation for Manning's and Chezy's Coefficients, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 2, Issue 6, pp.263-274, November-December-2016.