ANSYS Fluent CFD for Conjugate Heat Transfer

I got the following comments for one of my manuscripts

1. The unsteady N-S equations (3a – 3d) do not quite correspond to the considered formulation of the process physics. Equations (3a – 3d) describe an isothermal airflow and can be solved isolated from the heat-transfer equations (3e, 3f). So the presented mathematical formulation does not predict the air density and pressure change due to the heat transfer.

2. As far as I understand, the presented mathematical model does not include the energy equation for the CNC bud cover. So, it is not a clear influence of the CNC heat conductivity on the heat transfer process.

3. It is accepted to consider a problem of the heat transfer between a flow and a solid body in the conjugated formulation. There is no information about the conjugated formulation in the manuscript.

any one can help