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Three-Dimensional Porous Media as a Novel Approach for Stilling Basin Optimization: An Experimental Comparison with Solid Elements | ||
| فناوری های پیشرفته در بهره وری آب | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 01 آذر 1404 | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22126/atwe.2025.12620.1184 | ||
| نویسندگان | ||
| سید امین اصغری پری* 1؛ سیروس سعیدی2؛ محمود شفاعی بجستان3 | ||
| 1گروه عمران، دانشکده فنی و مهندسی ، دانشگاه صنعتی خاتم الانبیا بهبهان | ||
| 2دانشگاه صنعتی خاتم الانبیا بهبهان | ||
| 3استاد گروه سازه‌های آبی دانشکده مهندسی آب و محیط زیست دانشگاه شهید چمران اهواز، اهواز، ایران. | ||
| چکیده | ||
| The hydraulic jump is a primary mechanism for energy dissipation in stilling basins downstream of hydraulicThe hydraulic jump is a primary mechanism for energy dissipation in stilling basins downstream of hydraulic structures. Optimizing basin design to reduce length and construction costs is a key engineering challenge. This study presents a comprehensive experimental investigation into the effects of solid and porous baffle blocks and roughness elements on the characteristics of a hydraulic jump downstream of an ogee spillway. Experiments were conducted in a horizontal flume for a range of Froude numbers (Fr₁ = 4.58–5.75). Various arrangements of solid (impermeable) and porous (permeable) cubic blocks were tested and compared against a classical smooth-bed jump. The results demonstrate that all tested configurations reduce the sequent depth ratio (y₂/y₁) and jump length (Lⱼ). Notably, porous elements consistently outperformed their solid counterparts. Porous baffle blocks achieved a jump length reduction of 16–43%, compared to 12–29% for solid blocks. Similarly, porous roughness configurations reduced the jump length by 7–47%, surpassing the 5–35% reduction from solid roughness. The most effective configurations for minimizing hydraulic jump length were the Row-wise patterns (6 cm spacing) porous and combined roughness, as well as the zigzag porous bed roughness, alongside a double-row arrangement for baffle blocks, all using porous elements. The enhanced performance of porous media is attributed to additional energy dissipation mechanisms, including internal shear and jet interaction within the porous structure, leading to more compact and efficient stilling basins. | ||
| کلیدواژه‌ها | ||
| Hydraulic jump؛ Stilling basin؛ Energy dissipation؛ Porous media؛ Ogee spillway | ||
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آمار تعداد مشاهده مقاله: 2 |
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