Saudi Journal of Engineering and Technology (SJEAT)
Volume-2 | Issue-03 | 125-134
Research Article
Analysis of Head-loss Equations under EPANET and Hardy Cross Method
I.I. Nwajuaku, Y.M. Wakawa, O.J. Adibeli
Published : March 29, 2017
Abstract
A comparative analysis of head-loss equations under EPANET computer program and Hardy Cross iterative
method was carried out in this project. A single period analysis was performed on a three-loop network in EPANET’s
work space. Also, the network was solved with the Hardy Cross method, applying a single loop adjustment algorithm.
The frictional head-losses in each of the methods were computed using the Darcy Weisbach and Hazen Williams headloss equations. The convergence of the flow rate corrections in each of the cases was evaluated and compared. Results of
the analysis showed that the flow rate corrections converged at the 4th and 14th iteration for the two head-loss formulae in
EPANET and Hardy Cross method respectively. The results were subjected to t-test on 5% level of significance, and it
showed that there is no significant difference in the use of either of the head-loss equations for computations in each of
the methods. Thus, any one of the head-loss equations can be used for effective analysis of pipe networks.