Generate smoke/particles from Pflow

[ben_hamburg]

Yeah, I just noticed that I couldn´t see the particle count in the Main tab, because the name of the particles was too long.
So now I can definitely confirm that there are NOT 100 mill particles in my sim...
It also confirms that grid resolution is influencing the particle count: At ca. 1 mill cells I get particle counts up to 50.000, at 2 mill cells I only get 7-8.000.
Is this normal behaviour?
Like I mentioned earlier: If I decrease the grid resolution I am seeing artefacts in the simulated particles, so how can I increase the grid resolution without "loosing" so many particles..?

[Ivaylo Katev]

enable "use particle size" option, this must produce particles in region that is defined by the source particle size.

[ben_hamburg]

In the nightly build I can only see an option in the PHX Source that says: "PRT Shape" where I can choose between "one cell, sphere", "Use Size, Sphere" and "Use Shape". When I ticked "use shape" I had to drastically lower the particle birth rate...and now I am seeing a lot more going on.
So what does the default value "once cell, sphere" actually mean and when would I need this?

[Svetlin.Nikolov]

Using the shape treats the exact particle shape from pflow (sphere, cube, instanced complicated geometry, etc) as an obstacle for the simulation - it will produce velocity just by moving around the container and will be very slow to calculate in case you have many particles. This is a new option in the nightiy builds, before that the particles were treated only as spheres. "Use particle size" became "Use size, Sphere".

[ben_hamburg]

Ok, thanks for explaining! I still don´t understand why with the default option (one cell, sphere) I had to crank up the Particles in the PHX Source up to 100 mill to see good results...?

[Ivaylo Katev]

too low active volume

[ben_hamburg]

Ok, thanks, So I´ll just keep in mind to switch that option for my next sims where I need drag particles...