How to control the number of seeds when using the Particle Tracer filter?

ParaView Support
1

Hello,

I am using the Particle Tracer filter to simulate the injection of particles into a fluid domain via a catheter. Specifically, I have set the velocity field as the input and the catheter tip as the seed source.

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I noticed that the number of particles injected matched the number of nodes on the surface (617 nodes = 617 particles, left view). Since I would like to inject more particles, I remeshed the surface to increase the number of nodes to 1019. However, only 769 particles were actually injected: it appears that not all of the nodes are being used as seeds (right view).

Why is that? Is there a maximum number of seeds? Are the nodes too close together?

2

There is a “MaskPoints” property in the ParticleTracer, make sure to set it to 1.

3

I can’t find the ”MaskPoints“ property in the ParticleTracer, but only in the TemporalParticlesToPathlines.

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4

Ha right!

Please share your data then.

5

Thanks! Here is the link to the shared folder with my data.

6

Your points are right on the edges of the volume mesh, which makes some of them “outside” of the mesh because of floating point precision issue. A very small transfortm fixes that:

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a1623Ă—1115 152 KB

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7

Thanks! I slightly translated the surface along its normal and it worked. Really appreciate your help!

1 Like