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Particle number reduced in sliced FLIP Sept. 13, 2014, 1:22 p.m.

I distributed a FLIP sim on the farm, I noticed that particles flow towards the slices edge and disappeared (leaking?). Two problems arise as a result of this:

1. Velocities appeared along the slices edge, thus whitewater particles could appear unintentionally.
2. Water level dropped as the simulation went on because the number of particles reduced.

I tested using one machine with no slices, there was no leaking.

Maybe I can add particles to the container to keep the amount of particle during simulation but I'd like to know is this “leaking” normal when using sliced sim? Can anyone suggest some other solutions?

Thanks in advanced.

how to get dop field data from constraints in H9? Nov. 15, 2007, 10:51 p.m.

In H8, constraint data is added as subdata under the dop object , but in H9, the constraint data is added under RelInAffectors and RelGroup, when query these two by dophassubdata(), it shows that they are not subdata. Since they aren't subdata, I failed to access any data under them.
For example, I have a wire object and I saw the following structure in the detail view: “RelInAffectors/wireSpringConstraint_applyrel5_0/Constraint/State”
inside State, there is “force” property I want to access, but I can't by using dopfield().
Can anyone give me some help…?


no $PT in DOP? Oct. 23, 2007, 12:12 a.m.

hi, if this has been asked, i am sorry for that.

I was trying to bring a point attribute into DOP to set the strength parameter in the sbd spring constraint. The expression i used was :
point(“.:wire/Geometry”, $PT, “springstrength”, 0)
but houdini said DOP didn't know about $PT.

I think i can use nodes like copy data and stamp the values, but is there an easier way?