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Experimental survey of energy dissipation in nappe flow regime in stepped spillway equipped with inclined steps and sill

Author

Listed:
  • Moghaddam, Amir Kamyab
  • Ketabdar, Milad
  • Amir Ahmadian, Sepideh
  • Hoseini, Pedram
  • Pishdadakhgari, Mohammadali

Abstract

Stepped spillway increases the hydraulic resistance against flow by using of step-made spillway floor and when the flow of water passing on steps, a significant part of energy dissipates and also reduces the risk of cavitation. In this experimental research, in order to increase the energy dissipation of stepped spillway, Steps has a reverse gradient and in other part of this tests in addition to create a reverse gradient in the steps at the same time the sill is also installed on the edge of the steps. Height, thickness of the sills is considered variable. The results show that in both Nappe Flow Regime and Skimming Flow Regime Change of gradient, sills height, thickness are effective to increase the energy loss but the effect of these parameters on the Nappe Flow Regime is much greater than Skimming Flow Regime. By analyzing the results of the experiments and compared with results from other studies, the research showed that the method used in this study has a better energy loss than other methods used in prior researches.

Suggested Citation

  • Moghaddam, Amir Kamyab & Ketabdar, Milad & Amir Ahmadian, Sepideh & Hoseini, Pedram & Pishdadakhgari, Mohammadali, 2017. "Experimental survey of energy dissipation in nappe flow regime in stepped spillway equipped with inclined steps and sill," MPRA Paper 94690, University Library of Munich, Germany, revised Apr 2017.
    • Handle: RePEc:pra:mprapa:94690
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    File URL: https://mpra.ub.uni-muenchen.de/94690/1/MPRA_paper_94690.pdf
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    References listed on IDEAS

    as
    1. Rahmani, Fatemeh & Razaghian, Farhad & Kashaninia, Alireza, 2014. "High Power Two- Stage Class-AB/J Power Amplifier with High Gain and Efficiency," MPRA Paper 86867, University Library of Munich, Germany, revised May 2014.
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    Cited by:

    1. Dolatiary, Soheil & Rahmani, Javad & Khalilzad, Zahra, 2018. "Optimum location of DG units considering operation conditions," MPRA Paper 94194, University Library of Munich, Germany, revised 2018.
    2. Rahmani, Javad & Sadeghian, Ehsan & Dolatiary, Soheil, 2018. "Comparison between ideal and estimated pv parameters using evolutionary algorithms to save the economic costs," MPRA Paper 91708, University Library of Munich, Germany.
    3. Soori, Saba & Hajikandi, Hooman, 2017. "Numerical Computation of Flow Reattachment Lengthovera Backward-Facing Step at High Reynolds Number," MPRA Paper 94297, University Library of Munich, Germany, revised Apr 2017.
    4. Sadeqi, Abolfazl & Rahmani, Javad & Habibifar, Saeed & Ammar Khan, Muhammad & Mudassir Munir, Hafiz, 2020. "Design method for two-Stage CMOS operational amplifier applying load/miller capacitor compensation," MPRA Paper 102931, University Library of Munich, Germany, revised 12 Mar 2020.
    5. Yusefi, Peyman & Ostad, Mohammad & Sadeqi, Abolfazl, 2019. "Building Management System for Supporting the repaired Building," MPRA Paper 98181, University Library of Munich, Germany.
    6. Habibifar, Saeed & Kashaninia, Alireza & Farokhi, Fardad, 2017. "Robot path planning in a dynamic and unknown environment based on Colonial Competitive Algorithm (CCA) and fuzzy logic," MPRA Paper 92255, University Library of Munich, Germany, revised Sep 2017.
    7. Parandeh, Soheila & S Esmaeilzadeh, Nasim & Vaezi, Amir & Parandeh, Kimia & Bagheri, Ehsan, 2019. "Implementation of wampac security and stability improvement of power grids with systems," MPRA Paper 91806, University Library of Munich, Germany.
    8. Mafi, Mehdi & Azizi, Habib & Yazdizadeh Alborz, Hamidreza, 2017. "A new model of free global positioning system using triple DME," MPRA Paper 92341, University Library of Munich, Germany, revised Jul 2017.
    9. Atuwo, Tamaraebi, 2018. "Application of Optimized SFCL and STATCOM for the Transient Stability and LVRT Capability Enhancement of Wind Farms," MPRA Paper 88590, University Library of Munich, Germany, revised Jun 2018.
    10. Atuwo, Tamaraebi, 2018. "Application of Artificial Neural Networks in Cold Rolling Process," MPRA Paper 88520, University Library of Munich, Germany.
    11. Abolfazl Biglar Beigi, 2018. "Mathematical Analysis of Impact of Oil, Gold and Currency on Tehran Stock Exchange," Post-Print hal-02093480, HAL.

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    More about this item

    Keywords

    stepped spillway; Nappe Flow Regime; Skimming Flow Regime; energy loss; experimental method;
    All these keywords.

    JEL classification:

    • L74 - Industrial Organization - - Industry Studies: Primary Products and Construction - - - Construction
    • O13 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Agriculture; Natural Resources; Environment; Other Primary Products
    • O14 - Economic Development, Innovation, Technological Change, and Growth - - Economic Development - - - Industrialization; Manufacturing and Service Industries; Choice of Technology

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