한국항공우주학회지 (Journal of the Korean Society for Aeronautical & Space Sciences)

  • 제44권4호
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  • Pages.290-297
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  • 2016
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  • 1225-1348(pISSN)
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  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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사각 덕트내 난류 횡단류 유동장에 분사되는 액체 제트의 분열과 미립화에 관한 LES 해석

LES on breakup and atomization of a liquid jet into cross turbulent flow in a rectangular duct

  • Yoo, Young-Lin (Korea Aerospace University, School of Aerospace and Mechanical Engineering) ;
  • Han, Doo-Hee (Korea Aerospace University, School of Aerospace and Mechanical Engineering) ;
  • Sung, Hong-Gye (Korea Aerospace University, School of Aerospace and Mechanical Engineering) ;
  • Jeon, Hyuk-Soo (Agency for Defense Development, The 1st R&D Institute) ;
  • Park, Chul-Hyun (Agency for Defense Development, The 1st R&D Institute)
  • 투고 : 2015.09.17
  • 심사 : 2016.03.25
  • 발행 : 2016.04.01
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초록

사각덕트에서 난류 유동장으로 분사되는 액체 제트의 액주 분열과 미립화 현상에 관한 LES를 수행하였다. 기체상태의 공기 유동 해석에 오일러리안 해법을 사용하고, 액적 추적을 위하여 라그랑지안 해법을 사용하여 기체-액체간 이상유동(two phase flow) 해석을 수행하였다. 액적 분열 모델, 아격자 스케일 모델 및 공간 차분법에 따른 액적 분열을 조사하였다. 액체 제트의 침투깊이를 경험식과 비교하였으며 경험식보다 약간 높음을 알 수 있었다. 제트 후류에서 사우터 평균직경에 대한 분석을 수행하였다.

A two-phase Large Eddy Simulation(LES) has been conducted to investigate breakup and atomization of a liquid jet in a cross turbulent flow in a rectangular duct. Gas-droplet two-phase flow was solved by a coupled Eulerian-Lagrangian method which tracks every individual particles. Effects of liquid breakup models, sub-grid scale models, and a order of spatial discretization was investigated. The penetration depth in cross flow was comparable with experimental data by varying breakup model and LES scheme. SMD(Sauter Mean Diameter) distribution downstream of jet was analyzed.

키워드

참고문헌

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