Scour and Deposition around Causeways and Bed Bars
Journal Title: GRD Journal for Engineering - Year 2019, Vol 4, Issue 0
Abstract
This paper presents the experimental investigations of effect of bend on scour and deposition patterns around causeways and bed bars. Data have been collected in a re-circulatory open channel flow system on three causeway model slabs for many discharge values ranging from 1.0 l/s and 8.0 l/s. The causeway model slabs were made of cement concrete with 0.75 m length, 0.20 m width and 0.20 m in overall depth. To critically observe the effects of presence of bend on scour and deposition, three locations of causeway slabs and one location of bed bar were used. The first one is provided in a straight reach in the test channel, second one just after the first bend normal to flow and third one was an oblique slab provided between the inner and our curvature of the second bend downstream of the first bend. Data of scour and deposition around causeways and bed bar were recorded after the end of the run. Also photographs were taken. It is concluded that for each discharge, scour and deposition occur in all cases, but at low flow the scour in straight reach is less pronounced. However, scour occur in second and third causeways due to the presence of bends. At still high values of discharges, scour and deposition both are significant in all the causeways. Since first causeway is straight and normal to flow, there is uniform scour and deposition along the edges of the causeways. The scour and successive deposition occur in other two causeways with high magnitudes but the location of maximum scour depth shifted. Also scour holes were observed around the bed bars. Photographs also support the findings in this investigation.
Authors and Affiliations
M. Aman, I. S Saluja, H. Athar
Keywords
Related Articles
- EP ID EP552503
- DOI -
- Views 123
- Downloads 0
Experimental Studies on Concrete with Bentonite as Mineral Admixture
The present investigation deals with effect of bentonite clay on concrete. The concrete was produced by partial replacement of OPC with mineral admixture bentonite clay in percentages of 0%, 5%, 10%, 15% and 20%. The M20...
Approaches and Challenges in Investigation of Cement Paste Characteristics
Concrete is a widely used man-made complex material in the construction industry. Fresh properties of concrete have a tremendous effect on the durability and quality of structures. The workability is the crucial fresh pr...
Industrial Control Systems (ICS) Deployment Challenges
Industrial Control Systems (ICS) are used for controlling, operating and monitoring industrial processes. That current ICS infrastructures and elements are not amply secured against cyber threats in context of security....
Fly Ash Tiles and Its Resistance to Wear
As fly ash consist of more fine particles and amorphous in nature, it shows pozzolanic behavior and sometimes also self-cementitious character. Depending on the proportion of its porosity and its chemical constitutes, it...
Solar PV Array Employing Zeta Converter Based MPPT Controlled BLDC Motor
Drastic reduction in the cost of power electronic devices and annihilation of the fossil fuels in near future invite to use the solar photovoltaic (SPV) generated electrical energy. The ultimate aim of this paper is to d...