Review and experimental study of the coke deposition and heat transfer characteristics of aviation kerosene at supercritical pressure

The aero-engine cooling method using CCA (cooled cooling air) was studied by comparison of two different technical routes using bypass flow and aviation kerosene. The result indicates that the latter method offers greater potential benefits for improving engine performance. According to the studies made at home and abroad, the results show that the fuel temperature, pressure and surface material have influence on fuel deposition. The relative addictives in the fuel could reduce the deposition effectively. The influential factors of flow instability and the criterion for buoyancy were also found. The initial experimental studies on coke deposition and heat transfer characteristics at supercritical pressure show that, the fuel pressure, inlet temperature and surface material affect the thermal deposition. And the mass flow rate, flow orientation and the bend of the tube have influence on the heat transfer characteristics.