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Calculate Friction Loss in Pipe Expansion Under Partial Flow:
 
Calculation:
Designer/Checker:
   
Input:  
   

 
 
Upstream Velocity (V1 - fps or mps)
Downstream Velocity (V2 - fps or mps)
Note: For Expansion, V1 > V2.  
   

     
   
   
Output:  
 
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Head Loss (H) =
   
 
 
 




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