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Settling / Cross Sectional Velocity Spreadsheet

Below is a link to a Settling Velocity Spreadsheet developed by HydroFlo Tech.

By inputting the major design criteria, you can solve for the settling, cross sectional velocity of a Parallel Plate clarifier.

The spreadsheet operates on Microsoft Excel 2003 or later.

Clarifier settling, cross sectional velocity calculations

Below is a sample shot of the spreadsheet.

                 
        Settling Velocity Calculations    
                 
                 
Vs=[(4g (Ss-1) d) / 3 Cd]^1/2  Where:     g= acceleration of gravity in FT/S^2            
      Cd= coefficient of drag = (24/R) + (3/R^1/2) + 0.34    
      Ss= specific gravity of droplet      
      d= diameter of droplet in microns      
    MAX=====> R= 500 ; Cd= 0.52216        
      R= 250 ; Cd= 0.62574        
      R=100 ; Cd= 0.88        
    MIN======> R=10 ; Cd= 3.68868        
                 
                 
  Vs= [((1.5118 ft/s^2) (Ss-1) d) / 3 Cd)]^1/2        
                 
  Ss= 1.40 ======>  
  d= 100            
  Cd= 3.689            
                 
  Vs= 2.337557008 Feet per Minute