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Radioss:Warning ID 312 Incompatible Kinematic Conditions

Motoki_Koga

I am trying FSI about blood and vessel with Radioss.

I am trying to perform the analysis by imposing boundary conditions such as constraining both ends of the vessel, no-slip condition at the wall surface, and an inflow velocity of 0.2 m/s. However, I get an error of 99.9%.

what shall I do?

blood_vessel_300.hm

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Altair_Ichikawa

Incompatible kinematic condition occurs when more than 1 kinematic conditions are added to a same degree of freedom. Regarding your case, imposed velocities are added to the slave nodes of TYPE 2 interface.

Motoki_Koga

Incompatible kinematic condition occurs when more than 1 kinematic conditions are added to a same degree of freedom. Regarding your case, imposed velocities are added to the slave nodes of TYPE 2 interface.

Thank you, warning:312 has been resolved.

However, when I run the calculation on the following model, the energy error suddenly goes to 99.9% in the middle of the calculation and the calculation terminates with the following error message.
"RUN KILLED: ENERGY ERROR LIMIT REACHED."

Do you know the cause?

blood_vessel_300_trial.hm

Altair_Ichikawa

What kind of prroblem do you want to solve?

If you want to solve fluid flow, please refer following examples:

RD-E: 3900 Biomedical Valve (altair.com)