A new Junction feature is available for the Transport of Diluted Species in Pipes interface. It enables simulations of concentration profiles in complex piping networks by representing mass transfer at fittings with three or more connected pipes. The Junction node supports reversible flow in each branch by applying conditions that depend on the flow direction.

The new Open Pipe End node makes it possible to connect a pipe to an external system with a specified concentration, for example, a tank or reservoir. The node supports reversible flow by automatically applying boundary conditions that adapt to the flow direction at the pipe end.

Connecting a pipe segment modeled with the Transport of Diluted Species in Pipes interface to a 3D domain modeled with the Transport of Diluted Species interface is now significantly easier thanks to the introduction of the new multiphysics coupling: Pipe Connection, Diluted Species. This feature enables direct coupling of concentration and mass flux between 1D pipe segments and 3D domains modeled with the Transport of Diluted Species interface, streamlining the model setup.

A new Orifice feature is available in the Pipe Flow interface for modeling pressure drops caused by flow through orifices. Both sharp-edged and rounded orifices are supported, providing accurate representation of flow restrictions in piping systems.

A new Control Valve feature for modeling pressure losses introduced by adjustable valves is available in the Pipe Flow interface. The valve characteristics can be specified to represent different valve types and operating conditions, enabling accurate simulation of flow regulation in piping systems. The valve setup can be defined either through a dimensionless loss coefficient or by using industry-standard flow coefficients, such as Cv and Kv, allowing direct use of manufacturer data.

A new 3-Way Valve feature for modeling flow through valves with three connected pipes is available in the Pipe Flow interface. Both mixing and diverting regulated flow can be modeled. Parameterization can be done using a loss coefficient or with standard flow coefficients, such as Cv and Kv.