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Losses

Energy losses in a fluid under motion.

Types

Local loss

Occurs when there is a sudden change in flow.

Here:

  • - local loss coefficient
  • - velocity
  • - gravitational acceleration

Friction loss

Occurs because of

  • viscosity
  • friction between fluid and pipe wall

When the fluid is under turbulent flow:

Here:

  • - friction factor
  • - length of the pipe
  • - diameter of the pipe
  • - velocity
  • - gravitational acceleration