2nd order time integration

Lalala_CFD
Lalala_CFD Altair Community Member
edited October 2024 in Community Q&A

Hi everyone,

Is 2nd order time integration sensitive to CFL Number? Does user need to set CFL < 1 if using 2nd order?

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Answers

  • acupro
    acupro
    Altair Employee
    edited October 2024

    By default if type is set to transient, the time integration is second order.  If type is set to steady state, the time integration is first order.

    In either case, the stability of the solution process generally is not limited by CFL.

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