Journal of the Korean Society for Marine Environment & Energy (한국해양환경ㆍ에너지학회지)

The Korean Society for Marine Environment and Energy (한국해양환경•에너지학회)
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Feasibility Study on the Gas-Liquid Multiphase by Lattice-Boltzmann Method in Two-Dimensions

Lattice-Boltzmann Method를 이용한 2차원 기체-액체간 거동 기초 연구

  • Jung, Rho-Taek (School of Naval Architecture & Ocean Engineering, University of Ulsan)
  • 정노택 (울산대학교 조선해양공학부)
  • Received : 2016.01.15
  • Accepted : 2016.03.14
  • Published : 2016.05.25
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Abstract

Gas-Liquid multiphase flow simulation has been carried out using the Lattice boltzmann method. For the interface treatment, pseudo-potential model (Shan-Chen) was used with the Carnahan-Starling equation of state. Exact Difference Method also applied for the treatment of the force term. Through the developed code, we simulated coexsitence structure of high and low density, phase separation, surface tension effect, characteristics of moving interface, homogeneous and heterogeneous cavitation and bubble collaps.

기체-액체 이상유동의 거동 시뮬레이션을 위해 Lattice Boltzmann방법(LBM)을 이용하였다. 기체-액체사이의 경계면에서 상호포텐셜 모델인 Shen-Chan방식과 Carnahan-Starling 상태방정식을 도입하였다. 또한 외력항의 처리는 Exact Difference Method를 사용하였다. 개발된 코드를 통하여 상태방정식 특성파악, 기체-액체의 상분리, 표면장력 및 기체 액체 경계면 거동 특성, Homogeneous와 Heterogeneous 캐비테이션, 기포 붕괴등의 시뮬레이션을 수행하였다.

Keywords

References

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