Learning Forum

[Zwernjayden]

When I set the m_dot value of an injection, then check the injected DPM mass residual, or the outlet mass flow rate, they are significantly less than I set in the injection. Why is this?

[Rob]

Have they all reached the outlet? As you're injecting at kg/s are you checking kg, and if so have you account for time? 

[Zwernjayden]

 

It is steady state, and when I tracked the injected mass, it started at 0, jumped up to the expected value, then dropped back to zero after a few iterations and stayed there. And yes I made sure both where in kg/s

 

[Rob]

Please can you post an image of the particle tracks, fate report from the Console and both injection & DPM panels? Plus whatever you used to find the escaped mass. 

[Zwernjayden]

Turns out it was because I turned on breakup which meant it needed a start and stop time, which I had just left at 0. If I want a continuous flow, do I just set stop time to 9999999?