The Reynolds Number is not shown in SWMM 5 of InfoSWMM but can easily be added to the SWMM 5 code as shown in Figure 1. The equation for the Reynolds Number is
Normally, as shown is Figure 3 the Reynolds number is is very high and is indicative of very turbulent flow based on typical flows, velocities and pipe diameters/hydraulic radius's in SWMM 5 (Figure 2).
Figure 1. Reynolds Number is calculated in SWMM 5 for Darcy-Weisbach Force Main Friction Loss.Figure 2. Reynolds Number is calculated in SWMM 5 for Darcy-Weisbach Force Main Friction Loss. Where is is the DW value entered for a Force Main.Figure 3. Reynolds Number is calculated in SWMM 5 for Darcy-Weisbach Force Main Friction Loss, Typical values of the Reynolds Number.
