Recommendations
Well-rounded inletPipe exitSharp-edged inletHead loss in gradual reduction of channel sectionCentrifugal Decanter (Pieralisi)Baffles in coagulated water channel
Reentrant inlet
Given the flow
Coefficient

Input data

Flow

Diameter

Output data

Head loss

Description

Performs head losses calculations in reentrant inlets. There are two options:

Given the flow

Given the flow and the reentrant inlet diameter, calculates the corresponding head loss.

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

Coefficient

Given the reentrant inlet diameter, calculates the head losses coefficients 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

Well-rounded inlet

References

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