Different Velocities at different positions of the Piston.

C_KesanapalliC_Kesanapalli
edited October 2018 in DualSPHysics v4.2
Can any suggest how to input the velocities to the boundary with different velocities at different positions. Like in the SWASH + DualSPHysics simulation.

Comments

  • AlexAlex
    You can only use an external file with positions and time... so that compute positions of the piston starting from the velocity values you wanted

    Regards
  • C_KesanapalliC_Kesanapalli
    May I know the format of the positioning the values in the file. Here I am attaching a sample file on how I am interpreting.
  • AlexAlex
    You should follow examples, like in
    https://github.com/DualSPHysics/DualSPHysics/wiki/12.-Testcases#127-wavemakerfile
  • C_KesanapalliC_Kesanapalli
    edited October 2018
    In that example, the piston is moving as a rigid body with the external motion data file. But I need the piston that flexes (assigning different velocities at different vertical locations). Like in this Moving Boundary Picture.
  • AlexAlex
    ahhhhhhhhhhhhhhhhhhh ok ok, sorry for the confusion

    Beta version 4.3 that will be released during http://dual.sphysics.org/4thusersworkshop/ include some examples of how to do that. That version will be released only for delegates, but the version will be released later as official release (v4.4) once many details are checked and reported bugs are solved.

    Regards
  • C_KesanapalliC_Kesanapalli
    Can you suggest any alternative to apply the flexing boundary. such as how and where to edit the DualSPHysics code to add that flexing motion to the boundary.
  • AlexAlex
    You should apply your motion directly on the boundary particles when the position of those particles are updated. You have to navigate in the code to find that (ComputeStep, ComputeSymplectic, etc)
  • C_KesanapalliC_Kesanapalli
    Sure. I will try and let you know if I get any results.
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