Numerical Investigation of Wing to Web Length Ratios Parameter of T-shaped Spur Dike in a 90 Degree Bend on Scour Pattern
Journal Title: Journal of River Engineering - Year 2014, Vol 2, Issue 3
Abstract
There are a lot of methods and techniques to protect of the outer wall of river bends against erosion thatspur 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.This paper examines the effect of geometric parameter of wing to web length ratios of T-shaped spur dike in a 90 degree bend on scour around them using SSIIM software. The results show that the main scour hole to about two-thirds, or 67 percent of channel width has developed towards the outer wall. Analysis of scour pattern result, Cavity geometry changes, Bed topography and comparison of scour in transverse and longitudinal sections about spur dikes with different ratios of wing to web length have been studied.
Authors and Affiliations
mohammad vaghefi - Vali Allah Mohseni mehr - Maryam Akbari
Keywords
Related Articles
- EP ID EP32967
- DOI -
- Views 385
- Downloads 0
Experimental Study on Lozenge Collar Affection in Reduce Amount of Scouring Around Bridge Piers
Scour happening around bridges Pier is one of the major reasons to bridge destruction. At present time, there are various methods to prevent scour of bridges bases. One method is to set protector boards (collars) arou...
Comparison of Evapotranspiration Models for Estimating Reference Evapotranspiration in an Arid and semiarid Region, Northeast of Iran
In this study, evapotranspiration (ET0) was determined by several models for Bojnord city in Khorasan province. Outputs were obtained from IMO (Iran Meteorological Organization) weather station, located in the Bojnord...
3D Investigation of Flow Hydraulic in U Shape Meander Bendswith Constant, Decreasing and Increasing Width
In meandering rivers, the flow pattern is highly complex, with specific characteristics at bends that are not observed along straight paths. A numerical model can be effectively used to predict such flow fields. Since...
The Performance of Governments in Veil and Chastity, Relying on Contemporary Iranian History
One of the phenomena that influences the culture and traditions of the Iranian people is the veil that was challenged by decree of discovering the veil during Reza Shah period;A problem that may be considered as a uni...
Executive Plans for Managing Water Crisis in Tehran
Water is an essential element that is involved in all aspects of the lives of its inhabitants. The problem of water crisis is one of the problems that human society now faces. This issue has increased in the Middle Ea...