Use the T-Junction node to specify additional energy losses due to irreversible turbulent friction in a T-junction, which can act as a split or a merger.
The automatic search for T-junction points is possible. If you want to use this option, clear the
Manual control of selections check box, the selections will be replaced by the automatic ones. If you want to modify the selection, select
Manual control of selections again.
The Loss coefficients option allows you to enter a value or expression for the
Loss coefficient main branch Kmain for the energy loss between main branch and junction (the default is 0.1) and the
Loss coefficient side branch Kside for the energy loss between the side branch and junction (the default is 1.2). Both are dimensionless numbers. See
Figure 2-1.
The Loss coefficients, extended model option is available for the Pipe Flow interface. This option allows you to specify the loss coefficient in more details and account for the flow directions. Enter values or expressions for the six dimensionless loss coefficients. See
Figure 2-2.
Use the Pressure drops option to specify a value or expression for the pressure drop explicitly for each branch respectively:
.
.
) and select