Influence of flow conditions on scour hole shape for pier groups
نویسندگان
چکیده
j1 Christian Chreties MSc Assistant Professor, Instituto de Mecánica de los Fluidos e Ingenierı́a Ambiental (IMFIA), Engineering School, Universidad de la República, Uruguay j2 Luis Teixeira PhD Full Professor, Instituto de Mecánica de los Fluidos e Ingenierı́a Ambiental (IMFIA), Engineering School, Universidad de la República, Uruguay j3 Gonzalo Simarro PhD Associate Researcher, Instituto de Ciencias del Mar (CSIC), Spain
منابع مشابه
Turbulent characteristics in flow subjected to bed suction and jet injection as a pier-scour countermeasure
The effect of a combined system of the bed suction and jet injection as a pier-scour countermeasure on the turbulent flow field is studied in a laboratory flume using an Acoustic Doppler Velocimeter (ADV). The three components of the velocities in the vertical symmetry plane in the equilibrium scour hole in front and rear of the pier under 3-jet injections and bed suction rate Qs/Q0 = 2%located...
متن کاملEffect of collar on time development and extent of scour hole around cylindrical bridge piers
An experimental approach was carried out to study the time development and extension of scouring around a circular pier protected by a collar. The experiments included the study of scouring around an unprotected pier as well as the pier protected with collars located at different levels. Width of collars was 3 times the pier diameter. It was found that with collars, though the scour depth and t...
متن کاملبررسی الگوی پوشش سنگ‌چین در محل احداث گروه‌پایه‌های استوانه‌ای در پل‌ها
Ripraps are placed around bridge piers to prevent scour and secure the piers from failure. Proper riprap cover is essential to be economical. The present study examines using of riprap for reduction of local scour in piers group and the results are compared with data from riprap on a single pier. The models consist of two and three circular-shaped piers in line with the flow, with the diameter ...
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 کاملتأثیر توأم صفحات مستغرق و طوق در کاهش عمق آبشستگی پایه‌های استوانه‌ای شکل پل‌ها
Submerged vanes are low aspect ratio flow-training structures mounted vertically on the river bed at an angle to the prevailing flow. The aim of application of vane is to generate a secondary circulation in the main flow, designed to modify the near-bed flow pattern and thus redistribute flow and sediment transport within the channel cross section. Collar is a flat sheet with low thickness fixe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2012