The chemical reaction in the simulation was not carried out

[cgw]

Here’s a worked example with a sinusoidal input rate:

Sinusoidal particle input

Hi - You should be able to do this using a UDF. See the Conveyor Belt tutorial for an example of varying belt speeds. You can do a similar thing to set the variable BC_MASSFLOW_S. You don’t need to use the key data approach if you just want to hard-code a simple sinusoid in usr1_des.f. If you do that you will just need to rebuild the solver when you change the parameters. – Charles

And another related posting:

Pulsating fluidized bed

Dear developers! I recently worked on a pulsating fluidized bed, which I used as a DEM model. I learned the advanced tutorial, but when I imitated setting multiple different gas mass inlet boundaries, only the gas inlet with BCID=1 corresponded to data_kf_0001.txt, and the rest of the mass inlet did not have gas pulsatile inflow, which confused me. (Also set BCID=2 and data_kf_0002.txt and),can you give me some advice? looking forward to your reply， Thank you very much!