Radioss:Warning ID 312 Incompatible Kinematic Conditions

Motoki Koga
Motoki Koga Altair Community Member
edited January 23 in 質問と回答 (Q&A)

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?

 

Tagged:

Answers

  • Altair_Ichikawa
    Altair_Ichikawa New Altair Community Member
    edited January 11

    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
    Motoki Koga Altair Community Member
    edited January 12
    Altair_Ichikawa said:

    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?

  • Altair_Ichikawa
    Altair_Ichikawa New Altair Community Member
    edited January 23

    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)

     

Categories