FSI Stenotic Coronary Arteries

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I am currently working on replicating a study by Carvalho et al. (2022) (https://www.intechopen.com/chapters/80150) involving blood flow through coronary arteries.

I have successfully set up and run the standalone CFD simulation (Fluid Flow), and the results look correct. However, I am now trying to transition the model into a Fluid-Structure Interaction (FSI) simulation to couple the blood flow with the deformation of the arterial wall.

Unfortunately, COMSOL keeps throwing convergence errors, and the solver fails to find a solution.

Any advice please?


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