floating：how to set a constant velocity of a floating body

LLLLLL
in DualSPHysics v5.0

Dear all，

I want to set a constant velocity of a floating body in x direction，which meanwhile moving downwards in z direction acting on external forces. I have met the problem:

It seems that the body can't move at constant velocity when I set the it as floatings. Because the "motion" function can't apply on "floationgs".

Comments

  • LLLLLL

    Another Question: Can I use “restart” function to change parameters such as friction over time? For example， in 0-3s，the friction of the wall is 0, in 3-5s, the friction of the wall is 0.5.

    Thanks in advance.

  • AlexAlex

    What do you want to do? If you want to create a moving object, then just use the motion to specify it and there is no need to define it as floating body...

    Regards

  • LLLLLL
    This is an embed external element. It can be deleted using the delete key or the backspace key. To view the full element, press the preview button below.
    Alex

    What do you want to do? If you want to create a moving object, then just use the motion to specify it and there is no need to define it as floating body...

    Regards

    Thanks. I want to create a floating body moving at constant velocity. Just like a boat floating on the ocean moving forwand at constant velocity.

  • Asalih3dAsalih3d

    This is possible. Look at:

    DualSPHysics_v5.0\examples\others\MotionFloating\CaseMotionFloating_Def.xml

    Consider not using a floating, if what you want is purely motion behaviour. But you can do what you want through floatings like shown in the xml.

    Kind regards

  • LLLLLL

    Thanks a lot @Asalih3d

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