Particle Tacking and UDF

Häwimeddel · September 29, 2009, 05:25

I have a problem concerning DPM. If I hook a DEFINE_DPM_SCALAR_UPDATE udf to the discrete phase model (even if the UDF does not contain any code!) the particle tracking does not work properly any more. Meaning that most of the tracks are aborted, but are not being reported as aborted.

Quote:

number tracked = 250, escaped = 50, aborted = 0, trapped = 0, evaporated = 0, incomplete = 0

Upping the number of steps does not help.

As soon as I unhook the udf, it works. Any ideas?

Code:

DEFINE_DPM_SCALAR_UPDATE(particle_deposition, cell, thread, initialize, p)
{}

Häwimeddel · September 29, 2009, 10:56

It apparently has to do sth with Accuracy Control settings. If I disable them it does not work, if I set them to lo it does not work, but set to 0.05 the tracks all escape.

September 29, 2009, 10:56		#2
Häwimeddel New Member Join Date: Apr 2009 Location: KA, Germany Posts: 20 Rep Power: 17	It apparently has to do sth with Accuracy Control settings. If I disable them it does not work, if I set them to lo it does not work, but set to 0.05 the tracks all escape.