Skip to main content
SpringerLink
Log in

The Effects of Changing the Effective Crest Length of Labyrinth Side Weir on Discharge Capacity

  • Research Article-Civil Engineering
  • Published:
Arabian Journal for Science and Engineering Aims and scope Submit manuscript

Abstract

Labyrinth side weirs have significant advantages according to conventional side weirs in terms of discharge capacity. Labyrinth side weirs are especially advantageous in places where more discharge is required from small weir openings lengths. The most significant feature of labyrinth side weirs is their effective crest length, which enables them to discharge more flow. In this study, the situation where the discharge capacity is decreased due to the narrowing of the crest length of the labyrinth side weir for any reason was experimentally investigated in detail. It was also considered that the potential narrowing could be in the upstream weir crest length. The overflow from the remaining length of the crest was enabled by the 1/3, 2/3, and 3/3 closure of the upstream crest length of the labyrinth side weir. Therefore, it was attempted to determine the decrease in discharge capacity due to the narrowing in the effective crest length. The values of the discharge coefficient were obtained by using the De Marchi approach. The study was conducted for subcritical flow regimes and steady-state flow conditions. A total of 980 experimental runs were conducted in this study. As the length of upstream effective crest length of the triangular labyrinth side weir at the straight channel decreases, the discharge coefficient also decreases. By narrowing the length of effective upstream crest length in 1/3, 2/3, and 3/3 ratios, the total discharge capacity decreased by approximately 10%, 23%, and 48%, respectively.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11

Similar content being viewed by others

Abbreviations

b :

Width of a channel

C d :

Side-weir discharge coefficient

F1 :

Froude number at an upstream end of side weir

g :

Acceleration due to gravity

h :

Main channel depth

h1:

Flow depth at an upstream end of side weir at channel center

h2:

Flow depth at a downstream end of side weir at channel center

L :

Length (width) of side weir

ℓ’:

Triangular labyrinth side weir semi-crest length

p :

Height of weir crest

Q :

Discharge in the main channel

R :

Regression coefficient

S :

Decrease in discharge capacity (%)

References

  1. Ansari, U.; Patil, L.: Numerical analysis of triangular labyrinth side weir in triangular channel. ISH J. Hydraul. Eng. 28(sup1), 141–148 (2022)

    Article  Google Scholar 

  2. Ikinciogulları, E.; Emiroglu, M.: Estimation of triangular labyrinth side weir discharge capacity using schmidt approach. Sigma J. Eng. Nat. Sci. 37(1), 289–303 (2019)

    Google Scholar 

  3. Kilic, Z.; Emin Emiroglu, M.: Study of hydraulic characteristics of trapezoidal piano key side weir using different approaches. Water Supply 22(8), 6672–6691 (2022)

    Article  Google Scholar 

  4. Ben Said, M.; Ouamane, A.: Performance of rectangular labyrinth weir–an experimental and numerical study. Water Supply 22(4), 3628–3644 (2022)

    Article  Google Scholar 

  5. Emiroglu, M.E.; Gogus, M.; Tunc, M.; Islamoglu, K.: Effects of antivortex structures installed on trapezoidal labyrinth side weirs on discharge capacity and scouring. J. Irrig. Drain. Eng. 143(6), 04017006 (2017)

    Article  Google Scholar 

  6. Cosar, A.; Agaccioglu, H.: Discharge coefficient of a triangular side-weir located on a curved channel. J. Irrig. Drain. Eng. 130(5), 410–423 (2004)

    Article  Google Scholar 

  7. Aydin, M.; Emiroglu, M.: Determination of capacity of labyrinth side weir by CFD. Flow Meas. Instrum. 29, 1–8 (2013)

    Article  Google Scholar 

  8. Emiroglu, M.E.; Kaya, N.; Agaccioglu, H.: Discharge capacity of labyrinth side weir located on a straight channel. J. Irrig. Drain. Eng. 136(1), 37–46 (2010)

    Article  Google Scholar 

  9. Emiroglu, M.E.; Aydin, M.C.; Kaya, N.: Discharge characteristics of a trapezoidal labyrinth side weir with one and two cycles in subcritical flow. J. Irrig. Drain. Eng. (2014). https://doi.org/10.1061/(ASCE)IR.1943-4774.0000709

    Article  Google Scholar 

  10. De Marchi, G.: Essay on the performance of lateral weirs. L’Energia Electtrica Milano. 11(11), 849–860 (1934)

    Google Scholar 

  11. Emiroglu, M.E.; Agaccioglu, H.; Kaya, N.: Discharging capacity of rectangular side weirs in straight open channels. Flow Meas. Instrum. 22(4), 319–330 (2011)

    Article  Google Scholar 

  12. Novák, P.; Cabelka, J.: Models in Hydraulic Engineering; Physical Principles and Design Applications. Pitman Advanced Publishing Program (1981)

  13. Khode, B.V.; Tembhurkar, A.R.; Porey, P.D.; Ingle, R.N.: Experimental studies on flow over Labyrinth Weir. J. Irrig. Drain. Eng. 10, 1061 (2012)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Civil Engineering, Munzur University, Tunceli, Turkey

    Yusuf Dogan

  2. Department of Civil Engineering, Fırat University Elazıg, Elazıg, Turkey

    Nihat Kaya

Authors
  1. Yusuf Dogan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Nihat Kaya
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yusuf Dogan.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Dogan, Y., Kaya, N. The Effects of Changing the Effective Crest Length of Labyrinth Side Weir on Discharge Capacity. Arab J Sci Eng 48, 5289–5304 (2023). https://doi.org/10.1007/s13369-022-07388-y

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s13369-022-07388-y

Keywords

Search

Navigation