Injections

Atholl

Hi all,

I've defined an injection (i.e. particle density, diameter and position in my geometry) using previously converged case & data files of horizontal two-phase flow in an annulus. After some preliminary sessions of playing around with the settings, I've found a couple of problems:

1) My geometry length is around 6m, but no matter what settings I seem to alter, the particle track terminates around half of the length. What's wrong here?

2) When I alter the particle diameter, small diameters (c. 0.0001m) show the particle staying around the low side of the annulus (where it was defined initially). However, if I change the diamter to something larger (i.e. 0.1m) the track shows the particle being lifted up from the low side to the top side. Obviously, the larger the particle, the less likely it is to be lifted or dragged along by the fluid, so why am I getting this contradictory result?

Thanks in advance,

Atholl