The various boundary conditions are given below:
(1) Argon injection through six nozzles is modeled as mass flow inlet boundary condition with a
mass flow rate of 0.02 g/s through each nozzle entering at 1000K.
(2) Outlet of reactor is modeled as pressure outlet at absolute pressure of 1 atm.
(3) The inner cavity wall which is rotating at 120 rpm has a wall roughness height of 0.01 mm and
an emissivity of 0.7.
(4) Energy loss from the aluminum outer wall is considered as mixed wall boundary condition
combining radiation and convection to the ambient at 300 K.
(5) For the rotating outer cylindrical shell, heat transfer coefficient [8] is h = 6.2 W/m2K.
(6) For the front and back portion of outer wall including quartz window, heat transfer coefficient
[9] is h = 23W/m2K.