Curva e cotovelo de 90°
Given the flow
Coefficient

Input data

Flow

Diameter

Radius

Output data

Head loss

Description

Performs head losses calculations in curves with a known value of RD\frac{R}{D}, and in elbows (RD\frac{R}{D} = 1). There are two options:

RD\frac{R}{D}11.52468
k0.480.360.270.210.270.36

Given the flow

Given the flow, the pipe diameter and the relation RD\frac{R}{D}, calculates the corresponding head loss.

Coefficient

Given the pipe diameter and the relation RD\frac{R}{D}, 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

90° curve

References

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