공동 형상에 따른 케로신 연료의 초음속 연소 특성에 대한 실험적 관찰

초록

This study experimentally investigated the effects of cavity geometry and injection location on supersonic combustion characteristics of liquid kerosene. Direct imaging, schlieren visualization, and wall-pressure measurements were performed. Extending the injection location improved atomization and mixing, while thedouble cavity enlarged the flameholding region. The size-up cavity showed the best flame stability andpressure behavior among the tested configurations. However, stable kerosene-only combustion was not achievedwithout H2 assist in any case. These results indicate that cavity enlargement and injection-location control areeffective for improving flameholding, but further enhancement of fuel vaporization and mixing is required forstable kerosene-only combustion.

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