Heat transfer characteristics of a single-element gas-gas injector chamber

A single-injector heat-sink chamber was designed and hot-fire tested for 17 times at chamber pressure from 0.92MPa to 6.1MPa, and wall temperature measurement method was used to get the heat flux distributions on the inner wall along with the axial direction of the chamber. The convection heat fluxes were separated from the total heat fluxes to identify the relationship between the convection heat flux and corresponding chamber pressure. Single-injector chamber flows were also simulated with multi-species turbulence N-S equations at higher chamber pressure from 5MPa to 20MPa. Chemical reaction was modeled with Arrhenius formulation. Detailed 9 steps chemical mechanism was used to describe the reaction of hydrogen and oxygen. Both the flows structures and heat flux profiles on inner wall were obtained and discussed, and the results of experiments and calculations indicated the same rutrendle.