Experimental Investigation of Efficiency of Increasing Dissolved Oxygen of Flow in Stepped-Labyrinth Weirs

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Habib Panah M.; ESMAEILI VARAKI M.; NAVABIAN M.; Behbodi R.; FARZIN M.; Saffari Jourshari M.

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Journal: Irrigation and Drainage Structures Engineering Research Year:2020 | Volume:21 | Issue:78 Page(s): 1-22

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Title

Experimental Investigation of Efficiency of Increasing Dissolved Oxygen of Flow in Stepped-Labyrinth Weirs

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Keywords

AerationQ1

Dissolved OxygenQ1

Labyrinth WeirQ1

Stepped WeirQ2

Water QualityQ2

Abstract

Introduction: One of the important parameters of Water Quality is the high level of Dissolved Oxygen (DO) content that is essential for the survival of all aquatic organisms and Water Quality improvement. Aeration refers to the physical process of oxygen absorption from the atmosphere and enhancement of the Dissolved Oxygen of water. Some hydraulic structures enhance the oxygen transfer by creating a great deal of turbulence and entering air bubbles. Stepped spillways are efficient in terms of air bubble entrainment. Advantages of stepped spillways include strong turbulent mixing, a large residence time and a substantial air bubble entrainment. Moreover, based on the laboratory data, some researchers have studied the Aeration performance of Labyrinth Weirs in order to develop regression models for the prediction of Aeration efficiency. The experimental results showed that the Labyrinth Weirs aerated significantly better than the normal weirs, especially at the lower drop heights. One of the methods to increase the content of Dissolved Oxygen is installation of structures that help increasing turbulence and entering small bubbles of air into water body. A falling jet of weirs is a specific case of creating turbulence in the water and increasing DO...

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APA: Copy

Habib Panah, M., ESMAEILI VARAKI, M., NAVABIAN, M., Behbodi, R., FARZIN, M., & Saffari Jourshari, M.. (2020). Experimental Investigation of Efficiency of Increasing Dissolved Oxygen of Flow in Stepped-Labyrinth Weirs. IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH , 21(78 ), 1-22. SID. https://sid.ir/paper/367583/en

Vancouver: Copy

Habib Panah M., ESMAEILI VARAKI M., NAVABIAN M., Behbodi R., FARZIN M., Saffari Jourshari M.. Experimental Investigation of Efficiency of Increasing Dissolved Oxygen of Flow in Stepped-Labyrinth Weirs. IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH [Internet]. 2020;21(78 ):1-22. Available from: https://sid.ir/paper/367583/en

IEEE: Copy

M. Habib Panah, M. ESMAEILI VARAKI, M. NAVABIAN, R. Behbodi, M. FARZIN, and M. Saffari Jourshari, “Experimental Investigation of Efficiency of Increasing Dissolved Oxygen of Flow in Stepped-Labyrinth Weirs,” IRRIGATION AND DRAINAGE STRUCTURES ENGINEERING RESEARCH , vol. 21, no. 78 , pp. 1–22, 2020, [Online]. Available: https://sid.ir/paper/367583/en

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