About inlet and outlet bounddaries

[hhan23]

Hello.
I want to use gpush software to simulate the pipeline of an automatic sprinkler system, so I need to set the inlet particles of the pipeline to be added at a certain speed. I searched all the case files and only found SAexample and channelIO, which are about inlets and outlets. However, they use an HDF file to import the model and set inlets and outlets. Can I use the software's built-in geometric code to implement this function?
Also, in these two cases, I am not very clear about what I need to do regarding the setting of the boundary function (do I need to set the k-eps coefficient?)
Also, do I need to set SA boundaries in the framework,and in my case, if turbulence set as kepsilon, i cant find where to set k and eps?
I'm looking forward to your reply!