Kinematic Viscosity in /MAT/LAW6 (HYDRO or HYD_VISC)

Abdulmassih SABA
Abdulmassih SABA Altair Community Member
edited May 2023 in Community Q&A

Hello,

I am simulating a fluid using  /MAT/LAW6 HYD_VISC and STIFF-GAS equation of state. When setting the kinematic viscosity Knu to zero, the simulation would run just fine. I tried to look in the documentation for a default value for Knu, but there doesn't seem to be any. I run multiple simulations changing the value of Knu but couldn't get a similar behavior to the case Knu=0. Could you tell me what happens or what does it mean when setting Knu to 0?

Thank you in advance

Tagged:

Answers

  • Mathis
    Mathis
    Altair Employee
    edited May 2023

    Hello Abdulmassih,

    Knu should equal to 1e-20 by default. Did you try this value ?

    Thanks,
    Mathis. 

Categories