Hello
I want to know if there is a way to add a simultaneity coefficient in watercad: for example yo have node 1 with a demand of 0.2 l/s and node 2 with the same demand of 0.2 l/s, so the pipe that goes to those nodes reports a demand of 0.4 l/s which is the sum of individual node´s demand. I suppose there has to be a way to add a simultaneity coefficient to the nodes so the demand that goes through the pipe is somewhere between 0.2 l/s and 0.4 l/s. Thanks in advance
Hello Ricardo,
Ricardo Moreano said:I want to know if there is a way to add a simultaneity coefficient in watercad
From what I can understand of this is that simultaneity means that not all demands will be fulfilled always and so if you have some maximum demand then the simultaneity coefficient would be max demand / sum of all demands served.
As Scott suggested one approach would be having a demand adjustment factor to be used which would be multiplied to all your demands. For example if you have demands 0.2 l/s and 1 l/s to be served the simultaneity factor would be 1/1.2 = 0.83 which would be multiplied across all demands and you can then run your analysis. In this case if you have demands 0.2 l/s and 1 l/s, with a total flow of 1.2 l/s; then after applying the simultaneity factor, your flow would be 0.996 l/s which is between 0.2 l/s and 1 l/s.
Apart from this you can also explore using Pressure Dependent Demands which vary flow based on pressure. So if a junction has low pressure, it would be served less water. See more about using these here: Using Pressure Dependent Demands
Hope this helps.
Regards,
Yashodhan Joshi
Thanks a lot Yashodhan!!!