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Peristaltic axial tube- Walls of tube not closing
Posted Feb 21, 2018, 12:46 p.m. EST Computational Fluid Dynamics (CFD) Version 5.3 0 Replies
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Hi,
I am currently trying to build a peristaltic tube in Comsol. The model consists of an outter wall which is axial rotated to form a tube and water flows through the tube. Boundary loads are then applied to the tube to simulate acutuators acting on the tube. Picture shown below. These two loads then move up the tube and (hopefully) generate presure head and then top. I based my model on standard the peristaltic pump model that you can find on the comsol website and my model uses all the same physics.
The issue is that i want the walls of the tube to close to the centre when the boundary force is applied. I can get the wall to reach about halfway by increasing the load, however if the load is increased passed a certain point then the model spits out errors and doesnt solve. It says that it may have reached a singularity and that it has not converged.
Does anyone have any insight into how i could get the walls of the tube to close fully?
Much appreciated,
Rory
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Hello Rory Merz
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