Reply To: particle size distribution in histogram is not continuous

[Rob]

OK, it looks like the particles are going through the plane once, that helps with post processing as particles aren't counted multiple times. 

In a transient case stochastic tries are off as it's assumed the flow field will vary with time so we don't need the artificial option. Also look at the flow to see if you are getting any variations: there may be a swirl effect. I suspect the results are correct (or near enough depending on convergence) and it's now a case of understanding what's going on. You may need contours, particle tracks etc for different time steps to understand what's going on. 

Depending on model settings, particles should reduce in diameter as the char is burnt out and then only ash remains.