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| 1 | Study on coupled vibration characteristics of a cylindrical container with multiple elastic annular baffles显示文摘The coupled vibration characteristics of multiple elastic annular baffles of the same inner radius in a partially liquid-filled rigid cylindrical container were studied. The liquid domain was divided into several simple sub-domains so that the liquid velocity potential in each liquid sub-domain was of class C1 with continuous boundary conditions. Based on the superposition principle, the general solution of the liquid velocity potential corresponding to each liquid sub-domain was obtained by means of the method of separation of variables. The coupled modes of the multiple elastic annular baffles were expressed in terms of dry-modal functions. The free surface condition, the interface conditions and coupled vibration conditions were expressed in terms of Fourier series along the liquid height and Bessel series in the radial direction, respectively. Stable and fast numerical computations were investigated by the convergence study. Excellent agreements have been achieved in the comparison of results obtained by the proposed approach with those given by the finite element software ADINA. The natural frequencies and mode shapes versus the position, the inner radius and the number of the annular baffles were thoroughly discussed. | WANG JiaDong ZHOU Ding LIU WeiQing | 2012 | Science China(Technological Sciences)2012，55，12： | 2 |
| 2 | 深径比对邱克拉斯基结构内旋转驱动流动的影响显示文摘为了了解深径比对邱克拉斯基(Czochralski)结构内旋转驱动流动的影响,利用有限容积法进行了三维非稳态数值模拟。结果表明:随着液池深径比的增加,流动逐渐加强,当旋转速度超过某一临界值后,流动转变为三维非稳态振荡流动。随着液池深径比的增加,速度波振荡幅度增大,速度波波数和周向传播方向都随之改变;浅液池内坩埚旋转作用占主导地位,速度波传播方向与坩埚旋转方向相同,深液池内晶体旋转大于坩埚旋转对流动的影响,速度波传播方向和晶体旋转方向相同。 | 吴春梅 李友荣 彭岚 吴双应 | 2012 | 工程热物理学报2012，33，1： | 0 |
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