Numerical investigation on the effect of baffles on liquid sloshing in 3D rectangular tanks based on nonlinear boundary element method
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The numerical simulation of liquid sloshing in the three-dimensional tanks under horizontal excitation and roll excitation was carried out, and the inhibition effect of different baffles on the sloshing phenomenon was investigated. The numerical calculations were carried out by the nonlinear Boundary Element Method (BEM) with Green's theorem based on the potential flow, which was conducted with the governing equation corresponding to the boundaries of each region. The validity of the method was verified by comparing with experimental values and published literatures. The horizontal baffle, the vertical baffle and the T-shaped baffle in the sloshing tanks were investigated respectively, and the baffles' position, dimension and the liquid depth were provided and discussed in detail. It is drawn that the baffle shape plays a non-negligible role in the tank sloshing. The vertical baffle is a more effective way to reduce the sloshing amplitude when the tank is under a horizontal harmonic excitation while the horizontal baffle is a more effective way when the tank is under a roll excitation. The amplitude of free surface elevation at right tank wall decreases with the increasing of the horizontal baffle length and the vertical baffle height. Although the T-shaped baffle has the best suppression effect on tank sloshing under horizontal excitation, it has limited suppression effect under roll excitation and will complicate the sloshing phenomenon when changing baffle height.
Abstract
The numerical simulation of liquid sloshing in the three-dimensional tanks under horizontal excitation and roll excitation was carried out, and the inhibition effect of different baffles on the sloshing phenomenon was investigated. The numerical calculations were carried out by the nonlinear Boundary Element Method (BEM) with Green's theorem based on the potential flow, which was conducted with the governing equation corresponding to the boundaries of each region. The validity of the method was verified by comparing with experimental values and published literatures. The horizontal baffle, the vertical baffle and the T-shaped baffle in the sloshing tanks were investigated respectively, and the baffles' position, dimension and the liquid depth were provided and discussed in detail. It is drawn that the baffle shape plays a non-negligible role in the tank sloshing. The vertical baffle is a more effective way to reduce the sloshing amplitude when the tank is under a horizontal harmonic excitation while the horizontal baffle is a more effective way when the tank is under a roll excitation. The amplitude of free surface elevation at right tank wall decreases with the increasing of the horizontal baffle length and the vertical baffle height. Although the T-shaped baffle has the best suppression effect on tank sloshing under horizontal excitation, it has limited suppression effect under roll excitation and will complicate the sloshing phenomenon when changing baffle height.
참고문헌 (15)
- Akyildiz, H., "Sloshing in a three-dimensional rectangular tank : numerical simulation and experimental validation", Ocean Engineering, 33, pp.2135~2149 (2006)
- Belakroum, R., "An efficient passive technique for reducing sloshing in rectangular tanks partially filled with liquid", Mech. Res. Commun, 37, pp.341~346 (2010)
- Buzhinskii, V. A., "Vortex damping of sloshing in tanks with baffles", J. Appl. Math. Mech, 62, pp.217~224 (1998)
- Cho, J. R., "Dynamic analysis of baffled fuel-storage tanks using the ALE finite element method", Int. J. Numer. Methods Fluid, 41, pp.185~208 (2003)
- Firouz-Abadi, R. A., "3D BEM model for liquid sloshing in baffled tanks", Int. J. Numer. Methods Eng, 76, pp.1419~1433 (2008)
- Goudarzi, M. A., "Analytical and experimental evaluation on the effectiveness of upper mounted baffles with respect to commonly used baffles", Ocean Engineering, 42, pp.205~217 (2012)
- Liu, D. M., "A numerical study of three-dimensional liquid sloshing in tanks", J. Comput. Phys, 227, pp.3921~3939 (2008)
- Sames, P. C., "Sloshing in rectangular and cylindrical tanks", J. Ship Res, 46, pp.186~200 (2002)
- Shao, J. R., "An improved SPH method for modeling liquid sloshing dynamics", Comput. Struct, 100(101), pp.18~26 (2012)
- Shao, J. R., "A comparative study of different baffles on mitigating liquid sloshing in a rectangular tank due to a horizontal excitation", Eng. Compute, 32, pp.1172~1190 (2015)
- Valentine, D. T., "Numerical investigation of two-dimensional sloshing : nonlinear internal waves", J. Offshore Mech. Arctic Eng, 127, pp.300~305 (2005)
- Wang, Wenyuan, "Liquid sloshing in partly-filled laterally-excited cylindrical tanks equipped with multi baffles", Ocean Research, 59, pp.543~563 (2016)
- Wang,Wenyuan, "A numerical study of the effects of the T-shaped baffles on liquid sloshing in horizontal elliptical tanks", Ocean Engineering, 111, pp.543~568 (2016)
- Wang, Wenyuan, "An isogeometric boundary element method for liquid sloshing in the horizontal eccentric annular tanks with multiple porous baffles", Ocean Engineering, 189, pp.106367~ (2019)
- Wu, G. X., "Numerical simulation of sloshing waves in a 3D tank based on a finite element method", Appl. Ocean Res, 20, pp.337~355 (1998)