In this work, we simulated the mixing combustion flow field of second combustor under different air-fuel ratio to study the influence of air-fuel ratio on the second combustor performance of solid-rocket scramjet. The mixing combustion of the second combustor was simulated by using the two order upwind scheme based on the density, and the turbulence model and combustion model adopted SST k-ω model and eddy dissipation model, respectively. The result indicated that the chemical reaction rate, combustion efficiency, and total pressure recovery coefficient increased with the increase of air-fuel ratio. In a word, the selection principle of air-fuel ratio is to ensure the thrust-drag ratio is the best
LIU Zai
,
CHEN Linquan
,
WU Qiu
. Effects of Air-fuel Ratio on the Solid-rocket Scramjet Performance[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2017
, 37(6)
: 93
-95
.
DOI: 10.15892/j.cnki.djzdxb.2017.06.021
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