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Sudden reduction
Given the flow
Coefficient

Input data

Flow

Diameter 1

Diameter 2

Output data

Head loss

Description

Performs head losses calculations in sudden reduction. There are two options:

Given the flow

Given the flow and the inlet and outlet diameters of the sudden reduction, calculates the corresponding head loss.

hf=k.U22g h_f = k. \frac{U^2}{2g}

Coefficient

Given the inflow pipe diameter, calculates the head loss coeficients corresponding to the expressions:

  • k applicable to the expression:
    hf=k.U22g h_f = k. \frac{U^2}{2g}
  • kQ applicable to the expression:
    hf=kQ.Q2 h_f = k_Q. Q^2

Sudden reduction

References

  • Silvestre, Paschoal. Hidráulica geral. Rio de Janeiro, LTC, 1979.