What is the timesteps definition in steady state CFD simulations?

Francesco GIANI
Francesco GIANI New Altair Community Member
edited February 2022 in Community Q&A

What is the timesteps definition in steady state CFD simulations? And which is the rapport with the iterations

thanks 

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  • acupro
    acupro
    Altair Employee
    edited February 2022

    In AcuSolve the steady-state solve is first-order in time, so we are not attempting to achieve a time-accurate solution.  We just want to get the final steady-state solution, without any concern of the path to get there.  Thus we use a very large (non-physical) time step size.  Within each time step we take many linear equation solver iterations before moving to the next time step and updating the 'initial guess' for that time step.

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