The idea is to create an infinitely long channel.

I wish to feed in the outflow data into the next inflow data. Continue doing this the flow simulation converges.

In other words: 1. Initial values at 1st inflow -> Obtain 1st outflow results 2. Feed 1st outflow results into 2nd inflow -> Obtain 2nd outflow results 3. Feed 2nd outflow results into 2nd inflow -> Obtain 3rd outflow results 4. and so on, until the results converges (inflow = outflow)

Is there any way to do this using Fluent?

Maybe, you can try to use a JOURNAL file of FLUENT. Just a idea.

You can save your previous solution in a file and then give it as an initial guess. Because I assume that you would like to do that many times you can write a code in C/C++ or Fortran and call fluent from there as much times as you want and give it the initial solution you want.