Minor Loss: Sudden Enlargement

As a fluid flows from a smaller pipe into a larger pipe through a sudden enlargement, its velocity abruptly decreases, causing turbulence, which generates an energy loss.

Resistance coefficient for sudden enlargement (k, use graph or table below for reference):

Average velocity in initial pipe (v₁) in m/s:

Acceleration due to Gravity (g) in m/s²:

Resistance coefficients for sudden enlargement of pipes.

Resistance coefficient – sudden enlargement

Minor Loss: Entrance
Minor Loss: Exit
Minor Loss: Gradual Contraction
Minor Loss: Gradual Enlargement
Minor Loss: Sudden Contraction
Minor Loss: Sudden Enlargement