SWMM5 - Stormwater Management Model

SWMM 5, Watersheds, Water Quality,Hydrology, Hydraulics - Watersheds

SWMM 5 View Variables

The SWMM 5 binary graphics file consists of 46 variables for each link/pump/weir/orifice simulated in SWMM 5.  The variables are: 

Link Variables Description
LINK_FLOW flow rate                                                           
LINK_DEPTH flow depth                                                          
LINK_VELOCITY flow velocity                                                       
LINK_FROUDE Froude number                                                       
LINK_CAPACITY ratio of depth to full depth                                        
LINK_XAREA link x sectional area                          
LINK_WtdAREA link x sectional area                            
LINK_WtdR link Wtd Hydrualic radius                      
LINK_A1 upstream conduit area                                               
LINK_A2 downstream conduit area                                             
LINK_R1 upstream hydraulic radius                                           
LINK_R2 downstream hydraulic radius                                         
LINK_WIDTH link mid section width                                              
LINK_D1 upstream link water surface depth in the link                       
LINK_D2 downstream link water surface depth in the link                     
LINK_DQDH link surcharge dqdh                              
LINK_ATYPE link area type                                   
LINK_DQ1 link dq1 term                                        
LINK_DQ2 link dq2 term                                        
LINK_DQ3 link dq3 term                                        
LINK_DQ4 link dq3 term                                        
LINK_DQ5 link dq3 term                                        
LINK_MINOR link minor loss terms                                
LINK_DQ6 link dq3 term                                        
LINK_DQ8 link dq3 term                                        
LINK_qNorm1 link dq3 term                                        
LINK_qNorm2  link dq3 term                                        
LINK_DQTOTAL  link dq4 term                                        
LINK_H20SLOPE water slope difference                                              
LINK_FASNH link iterations to this time step                    
LINK_AKON link dynamic wave denom                              
LINK_ITERATIONS link iterations to this time step                    
LINK_TIMESTEP link iterations to this time step                    
LINK_SWMM3 swmm 3 cross sectional area                                         
LINK_SWMM4 swmm 4 cross sectional area                                         
LINK_SWMM5 swmm 5 cross sectional area                                         
LINK_VHUP velocity head upstream         
LINK_VHMID velocity head mid conduit                 
LINK_VHDN velocity head downstream               
LINK_VHHF friction loss                                
LINK_BE_RHS Bernoulli equation balance downstream node   
LINK_BE_LHS Bernoulli equation balance upstream node        
LINK_CENTER_VEL Velocity of the main channel in a natural channel section
LINK_LEFT_VEL Velocity of the left overbank channel in a natural channel section
LINK_RIGHT_VEL Velocity of the right overbank channel in a natural channel section 
LINK_QUAL      concentration of each pollutant                                     

    

Last updated by Robert E Dickinson Apr. 21, 2008.

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Snowlapse Monday, February 8th, 2010 Noel St. John, quasi-official photographer of TheAgitator.com, made this very cool time-lapse animation of the D.C.-area’s blizzard this past weekend.
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The solution is iterative but each iteration is dependent on the CFL or explicit time step. The time step we select is based on the CFL condition but instead of just using the explicit solution we iterate until the node depths are converged or a max…
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A Short History of Hydrogen Sulfide From the sewers of Paris to physiological messenger Roger P. Smith from http://www.americanscientist.org/issues/pub/2010/1/a-short-history-of-hydrogen-sulfide/2 Early last year, reports began to emerge in the Sout…
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Robert E Dickinson Ich bin ein Watershed Engineer, die weniger Überschwemmungen und eine bessere Wasserqualität für die Erde will.
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As rivers go, the Mississippi is one of the world’s biggies. It’s 3.734 km (2.320 mi) long and has a watershed of more than 3,2 million sq. km (1.245.000 sq. mi), the third-largest in the world (preceded only by the Amazon and Congo rivers), drai…
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