S-Space College of Engineering/Engineering Practice School (공과대학/대학원) Dept. of Mechanical Aerospace Engineering (기계항공공학부) Theses (Master's Degree_기계항공공학부)
Interface Reconstruction for Multiphase Homogeneous Mixture Model Using Level-set Approach
Level-set방법을 이용하여 균질 혼합류 다상 유동의 상경계면 재구성 방법 연구
- Sung Wonseok
- 공과대학 기계항공공학부
- Issue Date
- 서울대학교 대학원
- 학위논문 (석사)-- 서울대학교 대학원 : 기계항공공학부, 2017. 2. 김종암.
- The present research focuses on developing a numerical method to capture the accurate location of phase interface and calculate the precise curvature of phase interface for surface tension in the area of analyzing compressible two-phase flows. Two of the present methods are homogeneous mixture method and level-set method. The former method is good at capturing accurate location of phase interface but it produces diffusive phase interface. Also, the method is poor at the calculating curvature of phase interface even with exact information of phase interface. On the other hand, the latter method has sharpened phase interface and it can compute precise values about the curvature of phase interface. Therefore, the proposed method in this thesis is a blended scheme of the advantages from homogeneous mixture model and level-set method. The new method is referred to as the Coupled Level-set and Homogeneous Mixture (CLSHM) model. Then, its improvements are validated by several tests in comparison to homogeneous mixture model and level-set methods and experiment.