Time dependent Density Sources/Sinks

Hi Forum,

I am pretty new in the Field of LBM simulations.

At this moment I am stuck with the following problem:

I would like to include a very simple density POINT SOURCE (sink) in my simulation in order to simulate wave propagation.

How would I do this with the palabos C++ version?
And do I have to consider something special when doing so? What BCs would you recommend?

Of course I know that the amplitude of the wave needs to be very small.

Thanks in advance for any help.