How to include fluid inertia in a pipe that oscillates linearly in Simscape/SimHydraulic

I am new to SH and am looking for a way to include inertia in a hydraulic pipe that oscillates linearly. Is there a way to physical describe this with the Simscape/SimHydraulic tools such that fluid inertia is accounted for? To desciribe more completly, my model has a source pressure generated in Simulink which is fed to a pump which is linked to the hydraulic pipeline. The end of the pipeline is connected to a variable area hydraulic orifice. I am interested in the pressure and flow near the end of the hydraulic pipeline. However, in reality the pipeline oscillates lineraly at a varying speed.

Answer 1

[Guy Rouleau]

With SimHydraulics, the Segmented Pipeline block should help.

It simulates a hydraulic pipeline with resistive, fluid inertia, and fluid compressibility properties

http://www.mathworks.com/help/toolbox/physmod/hydro/ref/segmentedpipeline.html

If this does not do exactly what you want, look at the doc to see how to it is implemented. It might give you the inspiration to implement what you need using basic Simscape hydraulic blocks.

[Erich Rabassa]

Thank you much for the suggestion. I see that the segmented pipeline does include inertia due to resistivity of the pipe. However, I still have not figured out how to include a reciprocating motion of the pipe. Thus far, the only way I have been able to include the inertia effect due to the reciprocation motion is to calculate it analytically in Simulink, then convert the calculated inertia force to a pressure and add it to the source pressure in Simscape. If there is a more simple method to include this effect, please let me know.