Comparative Analysis of Hydraulic Roughness Coefficient at Purna River Sites
Journal Title: GRD Journal for Engineering - Year 2018, Vol 3, Issue 0
Abstract
In all engineering studies conducted on rivers and in designing structures intersecting these rivers, such as bridges, diversion weirs, intake ports, etc. where knowing the depth and velocity of the flow is required as well, the exact determination of the roughness coefficient is needed. The manning's n is a coefficient which represents the Roughness or Friction applied to the flow by the channel. Hydraulic roughness is highly variable parameter which depends upon the number of factors such as surface roughness, vegetation, channel irregularities, channel alignment, channel slope etc. The present paper discusses the predictability of different equations for determining the hydraulic roughness coefficient at the Garudeshwar and Gopalkheda site stations on Purna river in Gujarat. Statistical parameters such as mean percentage error (MPE), root mean square error (RMSE), discrepancy ratio (DR) and inequality coefficient (U) have been computed for evaluating the performance of selected formulas. Graphical comparisons are done to demonstrate the performance and variations for different data sets. Predicted values are compared with those observed by using Manning's Equation, empirical relations such as: Limerinous, Strickler, Meyer–Peter and Muller and using Cowan’s tables. Little variation in results is observed for Manning equation at Garudeshwar and Chow equation at Gopalkheda station.
Authors and Affiliations
P. R. Prajapati, Prof. B. M. Vadher, Dr. S. M. Yadav
Keywords
Related Articles
- EP ID EP296522
- DOI -
- Views 166
- Downloads 0
XPenDiture- A budget Management Solution
In Everyday life, everyone has to manage their finances one way or the other. People spend all kinds of amounts on things they need and things they don’t. An application which could record all the trades would simplify t...
Study of Urban Land Management Techniques Followed in India
Land is a resource and at the same time, it is non-renewable. So it should utilize very carefully. The constitution of India grants the right to acquire hold and dispose of property to every Indian citizen. It, however,...
Solar Power Optimizer for DC Distribution System
Solar Power Optimizer(SPO) for DC Distribution System comprises of a high step-up solar power optimizer (SPO) which efficiently harvests maximum energy from a photovoltaic (PV) panel, energy is output to a dc-micro grid....
Data Mining and Expert System Based on Efficient IDS
With popularization of internet, internet attack cases are also increasing, thus information safety has become a significant issue all over the world, hence Nowadays, it is an urgent need to detect, identify and hold up...
Design and Fabrication of Mechanical Lift for Transportation
Lift is a simple mechanical device used to raise element or object from ground level to a certain height to perform a specific work with maximum load and minimum efforts. This project describes the design as well as anal...