Heat Transfer and Flow Structure Characteristics of Regenerative Cooling in a Rectangular Channel Using Supercritical CO2

At an extremely high Mach number, the regenerative cooling of traditional kerosene cannot meet requirement heat sink caused by aerodynamic heating and internal combustion in a scramjet propulsion system. As supplement cooling, supercritical CO2 is regarded as effective coolant severe environments due to its excellent properties mass transportation. In this paper, transfer flow structure characteristics rectangular channel using are analyzed numerically validated model. The effect flux magnitude, nonuniform flux, acceleration buoyancy pattern considered reveal mechanism engine condition scramjet. results indicate that deterioration phenomenon becomes obvious loaded with relatively flux. Compared channels increased distribution, maximum temperature for decreased distributions. When larger applied, lower wall distribution higher coefficients obtained. more uniform high-temperature region weakened when coolants adjacent arranged reversed pattern. Overall, paper provides some references utilization at number