Experimental study on heat transfer deterioration of aviation kerosene in a vertical upward circular tube at supercritical pressures was conducted. The influence mechanisms of buoyancy and thermal acceleration on heat transfer were investigated. Based on the applicability analysis of determination criteria

the factors team which can better reflect the heat transfer deterioration were selected

and the reasonable critical values were obtained

thus the determination criteria for aviation kerosene was proposed. The prediction formula of critical heat flux of heat transfer deterioration was established based on the controllable parameters. The process of thermo-acoustic flow instability owing to heat transfer deterioration was analyzed. The heat transfer correlation was developed by the amendments of buoyancy and thermal acceleration factors. Results indicate that when the buoyancy factor Bu and the thermal acceleration factor Ac are higher than 1.57×10-5 and 4.92×10-6

respectively

the heat transfer deterioration appears due to the weakened shearing stress in the boundary layer. The quasi-boiling is also the reason for heat transfer deterioration and thermo-acoustic flow instability.