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针对某大型低温贮箱,基于水平环形防晃板和竖直防晃板设计了一种布置于整个贮箱的固定结构防晃板,采用CFD软件Flow-3D数值模拟了一定简谐激励下,不同充注率时该防晃板的防晃效果.通过与液面水平环形防晃板对比发现:两种结构防晃效果相近,均可以显著抑制不同充注率下液体的质量中心波动范围.当充注率为50%时,两防晃结构甚至可以使波动范围减小64%;在晃动过程中,相比于液面水平环形防晃板,固定结构防晃板中单层水平环形防晃板的受力更小,但是贮箱受到的压力会有所增加;对比相同面积液面水平环形防晃板和竖直防晃板的防晃效果,液面水平环形防晃板优势更加明显;随着充注率的增大,液体在贮箱内晃动时液体的质量中心波动范围逐渐减小.
For a large cryogenic storage tank, a fixed structure anti-sloshing plate arranged in the whole tank was designed based on the horizontal annular anti-sloshing plate and the vertical anti-sloshing plate. The CFD software Flow-3D was used to simulate a certain harmonic excitation, The anti-sloshing effect of the anti-sloshing plate at different filling rates was compared with that of the horizontal anti-sloshing plate at liquid level. The results show that the anti-sloshing effect of the two structures are similar, which can significantly reduce the fluctuation range of the mass center of liquid under different filling rates. When the filling rate is 50%, the two anti-wobble structure can even reduce the fluctuation range by 64%. Compared with the liquid level horizontal anti-wobble plate, the single-level horizontal annular anti-shake plate Swaying board less stress, but the tank will be subjected to increased pressure; compared to the same area level of the horizontal baffle and vertical baffle anti-slipping anti-shake effect, the level of the liquid ring bosses more obvious advantages With the increase of filling rate, the fluctuation range of mass center of liquid decreases when the liquid sloshes in the tank.