Description

Given the dimensions of various sections of an inlet channel for decanters and their distribution gates, this calculation determines the flow rates distributed to each gate and the head loss between the channel and the decanter.

To perform this calculation, the parameters $\theta$ and $\phi$ must be selected. The corresponding values are as follows:

• Long connection (connection length significantly greater than three times its diameter):
  $\theta = 0.4$
  $\phi = 0.90$

• Short connection (connection length less than three times its diameter; common case):
  $\theta = 0.7$
  $\phi = 1.67$

Input Data

Parameter	Default Units	Description
Total inlet flow ($Q$)	$L/s$	Total flow entering the system.
Access gates areas	$m^2$	Area of each lateral gate.
Access channel areas	$m^2$	Area of each channel section.
$\phi$	dimensionless	Factor related to the connection.
$\theta$	dimensionless	Factor related to the connection.

Output Data

Parameter	Default Units	Description
Head loss ($h_f$)	$m$	Head loss at each gate.
Outlet flow ($Q_{out}$)	$m^3/s$	Flow distributed to each gate.