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

  • 제43권1호
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  • Pages.8-22
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  • 2015
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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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액체-액체 동축형 스월 인젝터의 수치적 모사를 위한 SPH 코드 개발 및 검증

SPH Code Development and Validation for Numerical Simulation of Liquid-Liquid Swirl Coaxial Injector

  • Kim, You-Cheon (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Sirotkin, Fedir V. (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Yoh, Jai-Ick (Department of Mechanical and Aerospace Engineering, Seoul National University)
  • 투고 : 2013.10.23
  • 심사 : 2014.12.16
  • 발행 : 2015.01.01
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초록

지금까지 인젝터의 수치적 시뮬레이션은 대부분 Eulerian 기법의 바탕위에서 이루어져 왔다. 그러나 액체제트의 미립화현상과 복잡한 공기와의 경계면 변화를 나타내는데 있어 기존의 기법들이 갖는 선천적인 단점이 존재하며 따라서 본 연구에서는 새로운 Smoothed Particle Hydrodynamics(SPH)라는 입자 기법을 도입하였다. 수치적 시뮬레이션을 위해 먼저 해석을 위한 SPH 코드를 개발하였으며 본 논문에서는 인젝터 문제를 정확하게 나타내는데 있어 필수적인 알고리즘중 하나인 다상유동모사에 대한 검증문제가 제시 되어 있다. 마지막으로 다양한 인젝터 종류 중 하나인 액체-액체 동축형 스월 인젝터에 대한 시뮬레이션이 수행되었으며 실제실험과의 비교를 진행하였다.

Most jet spray and atomization simulations are done with the Eulerian method which has inherent disadvantage in representing jet breakups and droplets. Full Lagrangian particles method called Smoothed Particle Hydrodynamics(SPH) is used in this work. We develop the SPH code and perform validations that confirm the suitability of our SPH method for simulating liquid jet atomization problem. Then, we conduct the simulation of liquid-liquid swirl coaxial injector for comparison against the experimental data.

키워드

참고문헌

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