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## entrExperimental investigation of screens as energy dissipaters in submerged hydraulic jumpExperimental investigation of screens as energy dissipaters in submerged hydraulic jump

#### SINA SADEGHFAM [1] , ALI AKBAR AKHTARI [2] , RASOUL DANESHFARAZ [3] , GÖKMEN TAYFUR [4]

This study investigated the effectiveness of screens as energy dissipaters in small hydraulic structures using physical experiments. In the experimental design, the Froude number, screen arrangements, and screen porosity were the major controlling parameters. The experiments covered a range of Froude numbers between 2.5 and 8.5, screen porosity of 40% and 50%, and gaps of double screens between 1 and 5 cm. The main goal of this study was investigation of the screens creating submerged hydraulic jumps. The flow depth was digitally measured in order to perceive the turbulences and validate the results of energy dissipation against those of the methods in the literature. The experimental results show the importance of each parameter on the screen performance. The screens with double arrangement with the imposed hydraulic jump dissipated more energy. The gaps of the double arrangement had an insignificant effect on energy dissipation. The double screen with porosity of 40% had the best performance. Since the Froude number was found to be the most effective parameter, quadratic equations as a function of this number were fitted to the experimental results with high R$^{2}$ and very low RMSE values. The quadratic equations can be employed as interpolators and/or extrapolators.
This study investigated the effectiveness of screens as energy dissipaters in small hydraulic structures using physical experiments. In the experimental design, the Froude number, screen arrangements, and screen porosity were the major controlling parameters. The experiments covered a range of Froude numbers between 2.5 and 8.5, screen porosity of 40% and 50%, and gaps of double screens between 1 and 5 cm. The main goal of this study was investigation of the screens creating submerged hydraulic jumps. The flow depth was digitally measured in order to perceive the turbulences and validate the results of energy dissipation against those of the methods in the literature. The experimental results show the importance of each parameter on the screen performance. The screens with double arrangement with the imposed hydraulic jump dissipated more energy. The gaps of the double arrangement had an insignificant effect on energy dissipation. The double screen with porosity of 40% had the best performance. Since the Froude number was found to be the most effective parameter, quadratic equations as a function of this number were fitted to the experimental results with high R$^{2}$ and very low RMSE values. The quadratic equations can be employed as interpolators and/or extrapolators.
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Primary Language tr Articles Author: SINA SADEGHFAM Author: ALI AKBAR AKHTARI Author: RASOUL DANESHFARAZ Author: GÖKMEN TAYFUR Publication Date : February 1, 2014
 Bibtex @ { tbtkengineering145604, journal = {Turkish Journal of Engineering and Environmental Sciences}, issn = {1300-0160}, eissn = {1303-6157}, address = {}, publisher = {TUBITAK}, year = {2014}, volume = {38}, pages = {126 - 138}, doi = {10.3906/muh-1401-15}, title = {Experimental investigation of screens as energy dissipaters in submerged hydraulic jump}, key = {cite}, author = {SADEGHFAM, SINA and AKHTARI, ALI AKBAR and DANESHFARAZ, RASOUL and TAYFUR, GÖKMEN} } APA SADEGHFAM, S , AKHTARI, A , DANESHFARAZ, R , TAYFUR, G . (2014). Experimental investigation of screens as energy dissipaters in submerged hydraulic jump. Turkish Journal of Engineering and Environmental Sciences , 38 (2) , 126-138 . DOI: 10.3906/muh-1401-15 MLA SADEGHFAM, S , AKHTARI, A , DANESHFARAZ, R , TAYFUR, G . "Experimental investigation of screens as energy dissipaters in submerged hydraulic jump". Turkish Journal of Engineering and Environmental Sciences 38 (2014 ): 126-138 Chicago SADEGHFAM, S , AKHTARI, A , DANESHFARAZ, R , TAYFUR, G . "Experimental investigation of screens as energy dissipaters in submerged hydraulic jump". Turkish Journal of Engineering and Environmental Sciences 38 (2014 ): 126-138 RIS TY - JOUR T1 - Experimental investigation of screens as energy dissipaters in submerged hydraulic jump AU - SINA SADEGHFAM , ALI AKBAR AKHTARI , RASOUL DANESHFARAZ , GÖKMEN TAYFUR Y1 - 2014 PY - 2014 N1 - doi: 10.3906/muh-1401-15 DO - 10.3906/muh-1401-15 T2 - Turkish Journal of Engineering and Environmental Sciences JF - Journal JO - JOR SP - 126 EP - 138 VL - 38 IS - 2 SN - 1300-0160-1303-6157 M3 - doi: 10.3906/muh-1401-15 UR - https://doi.org/10.3906/muh-1401-15 Y2 - 2020 ER - EndNote %0 Turkish Journal of Engineering and Environmental Sciences Experimental investigation of screens as energy dissipaters in submerged hydraulic jump %A SINA SADEGHFAM , ALI AKBAR AKHTARI , RASOUL DANESHFARAZ , GÖKMEN TAYFUR %T Experimental investigation of screens as energy dissipaters in submerged hydraulic jump %D 2014 %J Turkish Journal of Engineering and Environmental Sciences %P 1300-0160-1303-6157 %V 38 %N 2 %R doi: 10.3906/muh-1401-15 %U 10.3906/muh-1401-15 ISNAD SADEGHFAM, SINA , AKHTARI, ALI AKBAR , DANESHFARAZ, RASOUL , TAYFUR, GÖKMEN . "Experimental investigation of screens as energy dissipaters in submerged hydraulic jump". Turkish Journal of Engineering and Environmental Sciences 38 / 2 (February 2014): 126-138 . https://doi.org/10.3906/muh-1401-15 AMA SADEGHFAM S , AKHTARI A , DANESHFARAZ R , TAYFUR G . Experimental investigation of screens as energy dissipaters in submerged hydraulic jump. Turkish Journal of Engineering and Environmental Sciences. 2014; 38(2): 126-138. Vancouver SADEGHFAM S , AKHTARI A , DANESHFARAZ R , TAYFUR G . Experimental investigation of screens as energy dissipaters in submerged hydraulic jump. Turkish Journal of Engineering and Environmental Sciences. 2014; 38(2): 138-126.

Authors of the Article
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