Hardy Cross method conducts an iterative analysis that solves for a looping pipe network problem. In this video, we will demonstrate the analysis procedure which implements Hazen Williams head loss equation.
Hardy Cross method consists of several steps. First, assumption of flow rate that complies with the continuity of flow is made. Then, flow loops are established, and sign convention of flow is set. The flows are now having proper representation for their direction with respect to their loops.
Iterative process begins by determining the head loss and resistance to the change in flow direction. Then, the flow rate correction is calculated, and the assumed flow rate is corrected based on that value. The process is repeated until convergence is achieved.
The following introduces the Hardy Cross method to analyse looping pipe network. Watch the video above for full details.
The expression for head loss and R are determined. Initial pipe flow rate is assumed before conducting iterative Hardy Cross method.
Iteration 1
Iteration 2
Iteration 3
Iteration 4
Output from Hardy Cross method
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