Pipe Flow Module Updates
For users of the Pipe Flow Module, COMSOL Multiphysics® version 5.6 brings a new physics interface for fluid-structure interaction in pipe systems, unidirectional constraints for pipes, and more flexible licensing for pipe acoustics. Read more about these features below.
Fluid-Pipe Interaction, Fixed Geometry Multiphysics Interface
The new Fluid-Pipe Interaction, Fixed Geometry interface can be used to account for the fluid load's effect on the structural analysis when modeling fluid-structure interaction (FSI). The new Fluid-Pipe Interaction multiphysics coupling connects the Pipe Flow and Pipe Mechanics interfaces. Internal pressure, drag forces, loads on bends, and loads on junctions are all taken into account for more accurate FSI simulations. You can see the new interface demonstrated in the Coupled Analysis of Flow and Stress in a Pipe model.
Unidirectional Constraint for Pipes
In the Pipe Mechanics interface, the Prescribed Displacement/Rotation feature has been improved with a third option for setting the displacement. The new Limited option allows for free displacement, but with an upper and lower limit that you define. This is particularly useful for modeling pipes resting on unidirectional supports.
More Flexible Licensing for Pipe Acoustics
The Pipe Acoustics, Frequency Domain and Pipe Acoustics, Transient interfaces are now available with either the Pipe Flow Module or the Acoustics Module.
Updated Tutorial Model
Coupled Analysis of Flow and Stress in a Pipe