Numerical investigation of hydrogen combustion-heater for scramjet ground test

Fluent was used to investigate numerically the internal flow field of combustion-heater for direct-connect scramjet ground test facility. The hydrogen multi-hole injection and hydrogen single-hole injection was computed, respectively. The results show that the exit flow field can meet the design requirements of total temperature 1900 K, Ma=1.85, and the hydrogen single-hole injection is superior to hydrogen multi-hole injection. Meanwhile the computational results also indicate the shortcomings of these two design schemes.