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New Method for Discharge Hydrograph Measurement of the Free Overflow with Full-Width, Thin-Plate Weir


Affiliations
1 University of Novi Sad, Kozaracka, 2a, 24000, Subotica, Serbia
 

The current standards recommend measuring water discharge with vented thin-plate weirs. The ventilation of full-width, thin-plate weirs during discharge hydrograph measurement still poses a problem. An experimental study regarding the design of a new type of ventilating device for hydrograph measurement was performed from 20 October through 5 December 2015 which proved that this device can be used measuring discharge at ventilated nappe according to standard recommendations. During the second part of the experiment, an opportunity was provided for measuring the discharge at non-ventilated nappe as a function of Reynolds and Weber numbers.

Keywords

Run-Off Hydrograph, Water Discharge, Weirs, Ventilated Nappe.
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  • Hovany, L., Discharge measurement by full-width ventilated thinplate weir. In Proceedings of the 4th International Conference on Contemporary Achievements in Civil Engineering, Faculty of Civil Engineering, Subotica. 22 April 2016, pp. 669–677.
  • Aydin, I., Altan-Sakarya, A. B. and Sisman, C., Discharge formula for rectangular sharp-crested weirs. Flow Meas. Instrum., 2011, 22, 144–151.
  • Bagheri, S., Kabiri-Samani, A. R. and Heidarpour, M., Discharge coefficient of rectangular sharp-crested side weirs. Part I: Traditional weir equation. Flow Meas. Instrum., 2014, 35, 109–115.
  • Gharahjeh, S., Aydin, I. and Altan-Sakarya, A. B., Weir velocity formulation for sharp-crested rectangular weirs. Flow Meas. Instrum., 2015, 41, 50–56.
  • Ackers, P., White, W. R., Perkins, J. A. and Harrison, A. J. M., Weirs and Flumes for Flow Measurement, Wiley, New York, USA, 1978.
  • Kindsvater, C. E. and Carter, R. W., Discharge characteristics of rectangular thin-plate weirs. J. Hydraul. Div., ASCE, 1957, 6, 1–36.
  • Ramamurthy, A. S., Tim, U. S. and Rao, M. V. J., Flow over sharp crested plate weirs. J. Irrig. Drain. Eng., 1987, 2, 163–172.
  • Pandey, R., Mittal, S. K. and Choudhary, M. K., Flow characteristics of sharp crested rectangular weir: a review. Int. J. Innov. Sci., Eng. Technol., 2016, 3, 171–178.
  • Aydin, I., Altan-Sakarya, A. B. and Ger, A. M., Performance of slit weir. J. Hydraul. Eng., 2006, 9, 987–989.
  • International Standard ISO 1438:2008(E). Hydrometry – open channel flow measurement using thin-plate weirs. International Organization for Standardization, Switzerland, 2008.
  • International Standard ISO 1438:2008 Technical Corrigendum 1, Hydrometry – open channel flow measurement using thin-plate weirs. International Organization for Standardization, Switzerland, 2008.
  • Bagheri, S. and Heidarpour, M., Flow over rectangular sharpcrested weirs. Irrig. Sci., 2010, 2, 173–179.
  • Bagheri, S. and Heidarpour, M., Application of free vortex theory to estimating discharge coefficient for sharp-crested weirs. Biosyst. Eng., 2010, 3, 423–427.
  • Bos, M. G., Discharge Measurement Structures, International Institute for Land Reclamation and Improvement, Wageningen, The Netherlands, 1987, 3rd revised edn.
  • Zhang, X., Yuan, L., Peng, R. and Chen, Z., Hydraulic relations for clinging flow of sharp-crested weir. J. Hydraul. Eng., 2010, 6, 385–390.
  • Aydin, I., Ger, A. M. and Hincal, O., Measurement of small discharges in open channels by Stil Weir. J. Hydraul. Eng., 2002, 2, 234–237.

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  • New Method for Discharge Hydrograph Measurement of the Free Overflow with Full-Width, Thin-Plate Weir

Abstract Views: 424  |  PDF Views: 112

Authors

Lajos Hovany
University of Novi Sad, Kozaracka, 2a, 24000, Subotica, Serbia

Abstract


The current standards recommend measuring water discharge with vented thin-plate weirs. The ventilation of full-width, thin-plate weirs during discharge hydrograph measurement still poses a problem. An experimental study regarding the design of a new type of ventilating device for hydrograph measurement was performed from 20 October through 5 December 2015 which proved that this device can be used measuring discharge at ventilated nappe according to standard recommendations. During the second part of the experiment, an opportunity was provided for measuring the discharge at non-ventilated nappe as a function of Reynolds and Weber numbers.

Keywords


Run-Off Hydrograph, Water Discharge, Weirs, Ventilated Nappe.

References





DOI: https://doi.org/10.18520/cs%2Fv113%2Fi01%2F148-154