SWMM56

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 3.  The equation for the Reynolds Number is Normally, as shown is Figure 1 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, Typical values of the Reynolds Number. 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.