| Boundary Condition | Type and Parameter of boundary condition |
| Inlet nozzles | Mass flow inlet boundary condition with mass flow rate of 8.35 g/s, total temperature of 294.2 K |
| Cold outlet | Pressure outlet |
| Hot outlet | Pressure outlet |
| Tube wall | No slip boundary conditions with adiabatic wall |
| Tube axis | Axisymmetric swirl conditions |