General Mechanical

General Mechanical

convergence plot

    • m.caragiuli
      Subscriber
      I am working on fluid mixing using fluent 19.2. in the convergence plot my results do not converge. I observed the straight line after some iterations. I am taking the rms value 10^-6 for continuity, velocities and concentration values for convergence. why it is not converging??
    • Aniket
      Ansys Employee
      can you please insert image of displacement convergence?nwhat error do you get in the solver output file?n-AniketnHow to access Ansys help linksnGuidelines for Posting on Ansys Learning Forumn
    • m.caragiuli
      Subscriber
      Hi,nI have to insert a new image since I'have edited some parameters of the simulation, however the behaviour is quite the same. In this case there is a period of convergence of both criteria (force and displacement) without any substep increment, then a bisection. After that, convergence of substeps occurred, but a new period of non-time increment occurs and persists in this way. There are warnings about large penetration and contact chattering.nThanksnn
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