가진 주파수에 따른 이차원 사각탱크 내부의 슬로싱에 관한 수치적 연구

다국어 초록 (Multilingual Abstract)

The present study investigates the sloshing phenomena in a two-dimensional rectangular tank at a low filling level by using a level set method based on finite volume method. The code validations are performed by comparing between the present results and previous numerical and experimental results, which gives a good agreement. Various excitation frequencies and excitation amplitude of the 30% filling height tank have been considered in order to observe the dependence of the sloshing behavior on the excitation frequency and amplitude. Regardless of excitation amplitude, the maximum value of wall pressure occurs when the excitation frequency reaches the natural frequency. The time sequence of free surface and corresponding streamlines for excitation frequencies have been presented to analysis the variation of wall pressure according to time, which contributes to explain the double peaks in the time variation of wall pressure.

참고문헌 (Reference)

1 전충호, "이상 유동에서의 유체-구조 연성해석을 위한 Direct Forcing/Ficititious Domain-Level Set Method" 한국해양공학회 25 (25): 36-41, 2011

2 배성용, "유체 슬로싱모드가 탱크의 진동에 미치는 영향에 대한 연구" 대한조선학회 40 (40): 10-95, 2003

3 윤현식, "레벨셋법을 이용한 2차원 사각 탱크 내부의슬로싱 특성에 관한 수치적 연구" 대한조선학회 45 (45): 132-143, 2008

4 이영신, "날개형 및 격막형배플을 이용한 유체저장탱크 내부의 슬로싱 저감 연구" 대한기계학회 27 (27): 2039-2046, 2003

5 Kang, D. H., "Summary Report of Sloshing Model Test for Rectangular Model" Daewoo Shipbuilding & Marine Engineering Co.,Ltd 2005

6 Noh, B. J., "Sloshing load analysis in spherical tank of LNG carrier" 22-30, 2005

7 Park, J. J., "Numerical sloshing analysis of LNG carriers in irregular waves" 38-43, 2005

8 Chen, Y. G., "Numerical simulation of liquid sloshing phenomena in partially filled containers" 38 (38): 830-842, 2009

9 Ibrahim, R. A., "Liquid Sloshing Dynamics: Theory and Applications" Cambridge University Press 2005

10 Lamb, S. M., "Hydrodynamics" Dover Publications, Inc. 1932

11 Shin, J. R., "Estimation of Sloshing Natural Periods in Liquid Cargo Tanks" 8 (8): 93-104, 1994

12 Kim, J., "Application of a fractional-step method to incompressible navier-stokes equations" 59 : 308-323, 1985

13 Sussman, M. S., "An improved level set method for incompressible two-phase flows" 27 : 663-680, 1998

14 Perng, C. Y., "A coupled multigrid-domain-splitting technique for simulating incompressible flows in geometrically complex domains" 13 : 269-286, 1991

15 Park, I. R., "A Study on the Level-Set Scheme for the Analysis of the Free Surface Flow by a Finite Volume Method" 36 (36): 40-49, 1999

16 Zang, Y., "A Non-staggered Grid, Fractional Step Method for Time-Dependent Incompressible Navier-Stokes Equations in Curvilinear Coordinate" 114 : 18-33, 1994