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Given the flow

Coefficient

Performs head losses calculations in contraction. There are two options:

Given the flow, the outlet diameter of the contraction and the reduction angle, calculates the corresponding head loss.

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

Given the outflow pipe diameter and the reduction angle, calculates the head losses coeficients corresponding to the expressions:

- k applicable to the expression:
$h_f = k. \frac{U^2}{2g}$
- kQ applicable to the expression:
$h_f = k_Q. Q^2$

Performs head losses calculations in contraction. There are two options:

Given the flow, the outlet diameter of the contraction and the reduction angle, calculates the corresponding head loss.

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

Given the outflow pipe diameter and the reduction angle, calculates the head losses coeficients corresponding to the expressions:

- k applicable to the expression:
$h_f = k. \frac{U^2}{2g}$
- kQ applicable to the expression:
$h_f = k_Q. Q^2$

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