Experimental Study on the Time Development of Local Scour on Around Single T-Shape Spur Dike in a 180 Degree Flume Bend
نویسندگان
چکیده
منابع مشابه
investigation on time variation of scour around t shape spur dike in a 90 degree bend
spur dike is an important element for protection of river banks. spur dike causes variations in flow field, sediment transport and bed topography. the mechanism of flow and sediment transport in a channel bend is very complex, especially when a spur dike is constructed in a bend. in this paper the time variations of dimension of the scour hole and the bed’s topography were considered around a t...
متن کاملExperimental Study of the Effect of Base-level fall at the Beginning of the Bend on Reduction of Scour around a Rectangular Bridge Pier Located in the 180 Degree Sharp Bend
Base-level fall in river beds occurs due to varying natural or unnatural causes. Base-level fall causes the change in the behavior of flow at the location of drop in base-level. In such situations, most of scour occur at the foot of the slope, and slope wall retreats in the upstream direction. This phenomenon widens the wall of the river bank, thus leading to its destruction. The amount of bed ...
متن کاملNumerical Study on the Effect of Ratio among Various of Submersion on Three Dimensional Velocity Components around T-shaped Spur Dike Located in a 90 Degree Bend
Spur dike is one of the hydraulic structures used in rivers to protect river banks. In this paper, flow pattern around a T-shaped spur dike which is located in a 90◦ bend and different amounts of submersion has been studied using Flow-3D. Numerical results have been compared with experimental results and have been analysed.
متن کاملبررسی آزمایشگاهی اثر شکاف در بدنه آبشکن بر کنترل آبشستگی اطراف آن در قوس 180 درجه
In this study, the performance of slot in the spur dike was evaluated as a way to reduce the scouring around the installed flat spur dike in a 180 degree bend and the development of scouring in the slotted spur dike was compared with that of the spur dike with no slot. To evaluate the effect of the slot on the development of scouring around it, a flat spur dike made of Plax Glass was installed ...
متن کاملاثر شرایط جریان و عوامل هندسی آبشکن مستغرق در پایداری ریپرپ
Spur dikes are the most common hydraulic structures for river bank protection. Since the construction of this structure causes higher velocities around it, this structure is exposed to erosion. Riprap around the structure nose is one of the most common and economic way to protect spur dike. The main aim of this study is to investigate the riprap stability in a mild 90 degrees bend. Experiments ...
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ژورنال
عنوان ژورنال: Research Journal of Environmental Sciences
سال: 2010
ISSN: 1819-3412
DOI: 10.3923/rjes.2010.530.539