Hi
Which formula of calculation of SWMM use Entry loss Coefficient , exit coefficient and Avg. loss coeff
Thank u
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Hi
Which formula of calculation of SWMM use Entry loss Coefficient , exit coefficient and Avg. loss coeff
Thank u
You need to be a member of SWMM 5 or SWMM or EPASWMM and SWMM5 in ICM_SWMM to add comments!
Replies
is there a standards value of those coefficients or can be any value??
Normally, the coefficients range from 0 to 1
Thank you
the two node are non-surcharge
Subject: Exit, Other and Entrance Loss Values in SWMM 5
The entrance, exit and other losses in SWMM 5 are computed at the upstream, downstream and midpoint of the sections of the link. However, if the normal flow equation is used for the link during a time step then these losses are zero as the flow in the link is based solely on the upstream area and upstream hydraulic radius of the link. If you add loss coefficients and the normal flow equation is used then you will not see any change in the flow as you modify the loss coefficients.
I have a probleme, I Have the water level in 2 nodes and i should determine the differents coefficients and I dont know how to do it can you help me
The water level in your nodes are a function of the inflows and the losses in the system. If you are trying to match the levels then you should try to have the correct inflows and then change the roughness of losses in your model. Are you water levels for those 2 nodes, surcharged or non-surcharged?