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논문 기본 정보

자료유형
학술저널
저자정보
최근혁 (홍익대학교) 신승원 (홍익대학교)
저널정보
한국전산유체공학회 한국전산유체공학회지 한국전산유체공학회지 제23권 제2호
발행연도
2018.6
수록면
16 - 22 (7page)
DOI
10.6112/kscfe.2018.23.2.016

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In this study, we present numerical technique to track moving solid object interacting with two-phase flow using fictitious domain method (FDM). Movement of the phase interface between two fluids is captured by Level Contour Reconstruction Method (LCRM) which has advantages of both Level Set and Front Tracking Method. Following the similar concept of interface tracking which utilize the distance function from the two fluids interface (i.e. Level Set characteristic), distance function of the solid was constructed theoretically as functional form for simple structure such as circle and rectangle at the start. Based on non-deformable nature of the solid object, only the translation and rotational motion of the solid centroid were traced. During the simulation, solid distance function was updated instantaneously by translating and rotating back to the initial state where the theoretical functional form is existing. Several benchmarking tests were performed to check the accuracy of the solid tracking capability. Falling cylinder with and without two-phase front was tested and showed good agreement with the existing data. Rolling rectangle on the two-phase interface was also tested for the accuracy in rotating motion. Falling circular particle interacting with circular droplet was compared with particle-particle interaction and showd distinctive difference due to merging droplet into the particle.

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UCI(KEPA) : I410-ECN-0101-2018-559-003157954