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An experimental investigation of the influence of zigzag walls in the stilling basin on the hydraulic jump's properties | ||
| فناوری های پیشرفته در بهره وری آب | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 25 مرداد 1404 | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22126/atwe.2025.12036.1162 | ||
| نویسندگان | ||
| علی اکبر اختری* 1؛ Humam Amer Hadi1؛ Atheer Zaki Al-Qaisi2 | ||
| 1Department of Civil Engineering, Faculty of Engineering, Razi University of Kermanshah, Kermanshah , Iran. | ||
| 2Water Resources Management Engineering Department, College of Engineering, AL-Qasim Green University, Babylon , Iraq | ||
| چکیده | ||
| The present research conducts experimental analysis on utilizing of zigzag walls and middle blocks in the stilling basin and their effects on the characteristics of the hydraulic jump taking into consideration the water's dynamic energy dissipation and the free surface profile of hydraulic jumps in stilling basins The average amount of the relative energy dissipation for case1 and case2 are (61.1%, 64.9%) respectively increased by (3.8%). زCase1 indicates a (28.1%) difference in dissipation energy due to a drop in the rate of energy dissipation with an increase in Froude number (Fr1), The difference in dissipation energy equal (5.1%) for case2. Using of zigzag walls in stilling basin (cases2) give the highest relative energy dissipation and the lowest Froude number (Fr2 between 0.46 to 1.20) at the downstream of stilling basin and this is useful in reducing the length of the stilling basin. Also, it is found that the water heights in the middle of the stilling basin in case2 are generally lower than the water heights at the edge, while for case1 when the walls are smooth, the water heights values are almost equal. the use of zigzag walls in the stilling basin leads to an increase in relative energy losses and the lowest Froude number (Fr2 between 0.46 to 1.20) at the downstream of stilling basin and also leads to reducing the length of the hydraulic jump at the downstream, thus reducing the length of the stilling basin. This reflects positively on reducing the cost and time of construction | ||
| کلیدواژه‌ها | ||
| energy dissipater؛ free surface profile؛ hydraulic jump؛ spillway؛ stilling basin | ||
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