Meaning of parameters in CasePistonDamping_REG?

edited May 2018 in DualSPHysics v4.2
I want to simulate with the passive absorption function using sponge layers. But I don't know the meaning of the following parameters in CasePistonDamping_REG:

overlimit value="1"
redumax value="10"

Wound anybody help me with that?
Thank you!


  • Dear user

    Sorry for not explaining this properly.
    We are now working on XML_v4.2_GUIDE.pdf where this will be indicated.

    redumax=beta in Eq.46 in section 3.10.1 of the Users Guide
    redumax=10 (that is the suggested value, value as default)

    Note that you have to create a damping zone of at least one wavelength (L)
    x1= is the maximum x of the damping zone
    x0= is the initial x of the damping zone

    adds extra space (1 meter in x) where velocity of the particles fall down to zero

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