Scour around Spur Dike in Sand–Gravel Mixture Bed
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 کاملاثر فاصله شکاف از دماغه آبشکن مثلثی بر الگوی فرسایش و رسوب
Scour around structures in the river is the most destructivr factor of these structures. Therefore, different methods have been studied to reduce it. A creation slot is one of these methods in the suitable position that can be modified to control the flow pattern scour. In this study, the effects of using two parallel chord rectangular slots in the single spur dike with the opening of the eff...
متن کاملEvaluating the Effect of Various Parameters of Protective Spur Dike on Scour Depth Reduction using Group Method of Data Handling (GMDH) and Gene Expression Programming (GEP)
Spur dikes are one of the common methods to protect rivers against erosion. Scouring around the spur dike is an important factor that can disorder the structural performance. Using protective spur dike is proper technique reduce the scour amount. In this research, the GMDH and GEP model used in order to evaluate and estimate the effect of various parameters of protective spur dike o...
متن کاملControl of Scour around the Submarine Pipelines in the River Bed
This paper presents, a set of experiments was conducted in a Plexiglas flume setup to investigate the simultaneous use of pipe and blade in the scour control around a submerged pipe. A vertical cylindrical pipe with and without a blade placed below it was selected for the experiments. The experiments were carried out in two different sates: with blade and without blade the pipe. Moreover, they ...
متن کاملتأثیر قدرت جریان ثانویه بر تنش برشی بستر پیرامون آبشکن سرسپری مستقر در موقعیت‌های مختلف قوس 90 درجه با بسترصلب
In this study, the effect of the secondary flow strength and vorticity on variations of bed shear stress for different positions of spur dike are compared through a mild 90˚ bend along with a T-shaped spur dike in a rigid bed. To carry out these experiments, three dimensional velocimeters (ADV) have been used for measuring velocity. Moreover, a comparison has been made between velocity vectors ...
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ژورنال
عنوان ژورنال: Water
سال: 2019
ISSN: 2073-4441
DOI: 10.3390/w11071417