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Structural Dynamics

Structural Dynamics

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  3. Why phase lag is not seen in a FSI analysis?

Why phase lag is not seen in a FSI analysis?

Tagged: 19.1, mechanical, Modal/Harmonic Response, structural-dynamics, structural-mechanics
    • April 5, 2023 at 2:32 pm
      FAQFAQ
      Participant

      In a structural transient analysis, when we have damping, we see a phase lag due to the damping term (being proportional to velocity rather than displacement). In a transient FSI analysis, the situation is different – Fluent does not give Mechanical a damping matrix. Instead, Mechanical passes displacements to Fluent, which returns forces (pressures).

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