Smaller dt Hint Message
Smaller dt Hint Message
(OP)
We're trying to replicate the work done in an older version of HydroCAD using version 9.00. We are getting message 49 "Hint: Tc<2dt may require smaller dt" for one of our subcatchments. The Tc is 5.8 minutes.
Our dt was set at 0.50, which we reduced to 0.10, but the message remains.
What do we need to change to satisfy the program and get rid of this message? Or is this something that should not concern us?
Our dt was set at 0.50, which we reduced to 0.10, but the message remains.
What do we need to change to satisfy the program and get rid of this message? Or is this something that should not concern us?





RE: Smaller dt Hint Message
RE: Smaller dt Hint Message
For your Tc of 5.8 minutes, reducing the dt to 0.04 hours will eliminate the message.
Note: The "Minimum Tc" setting is used to arbitrarily raise any Tc that falls below the specified threshold. This feature is intended for use ONLY when a minimum Tc is prescribed by local regulations. Otherwise the actual Tc value should be used.
For further information please see www.hydrocad.net/tc.htm
Peter Smart
HydroCAD Software
www.hydrocad.net