Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Numerical Study on the CO and NO of Rocket Plume as the Type of Water Injection in the Flame Guiding Duct

화염유도로 냉각수 분사방식에 따른 로켓 플룸의 CO와 NO 반응의 수치해석

  • Kim, Seong-Lyong (Propulsion Test and Evaluation Team, Korea Aerospace Research Institute) ;
  • Kim, Seung-Han (Propulsion Test and Evaluation Team, Korea Aerospace Research Institute) ;
  • Han, Yeoungmin (Propulsion Test and Evaluation Team, Korea Aerospace Research Institute)
  • Received : 2015.04.24
  • Accepted : 2015.05.08
  • Published : 2015.06.01
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Abstract

A numerical study has been conducted on CO after burning and NO generation of the rocket plume as the cooling water injected to the rocket plume. The present study shows that the cooling water has a role of increasing the degree of CO after burning and reducing NO generation. However the effect varies as the injection configuration of the cooling water. When the cooling water is injected at the side of the plume, NO generation is dramatically reduced while the degree of CO after burning is relatively low. When the cooling water is injected at the side and the center of the plume, CO after burning is highly increased and NO generation is also dramatically reduced.

로켓 플룸에 냉각수 분사하여 일산화탄소 재연소와 질소산화물 생성 과정을 포함한 유동장의 변화를 전산 해석하였다. 연구 결과 플룸에 분사된 냉각수는 질소산화물 생성을 억제하고 CO 재연소를 촉진시켰다. 그러나 냉각수 분사 방식에 따라 그 효과는 달랐다. 냉각수를 플룸의 측면에서 분사할 경우 질소산화물 생성은 크게 억제하였지만, 일산화탄소 재연소는 약간 증가하였다. 반면에 냉각수를 플룸 중심과 측면에서 동시에 분사하는 경우 질소산화물 생성의 억제와 일산화탄소 재연소를 크게 촉진시켰다.

Keywords

References

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