Effect of axial radiation on heat transfer in a thermally and hydrodynamically developing flow between parallel plates

The present work investigates coupled convection- radiation heat transfer through parallel plates with both heated and cooled walls. The flow is both hydrodynamically and thermally developing. The momentum and energy equations are solved with the computational fluid dynamics ( CFD) code FASTEST3D, based on the finite- volume method ( FVM). The medium is considered to be radiatively participating and the radiative heat transfer is also treated by the finite- volume method. Both axial and transverse heat transfer are considered. The effect of axial radiation is shown for different optical parameters by comparing results with and without axial radiation. The effect of hydrodynamically developing flows is also considered.