| 非满载罐体液体冲击等效机械模型参数确定 |
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| 引用本文： | 郑雪莲,李显生,任园园,刘宏飞,杨猛.非满载罐体液体冲击等效机械模型参数确定[J].湖南农业大学学报(自然科学版),2013,40(6):53-58. |
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| 作者姓名： | 郑雪莲 李显生 任园园 刘宏飞 杨猛 |
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| 作者单位： | (吉林大学 交通学院, 吉林 长春130022) |
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| 摘 要： | 为了获得指定罐体形状和充液比条件下的钟摆模型参数值，采用类比分析方法推导了钟摆摆线长度参数和液体冲击频率的关系；采用假设和类比分析相结合的方法推导了钟摆小球质量参数和液体冲击力的关系.在此基础上，借助不同仿真条件下的液体自由振荡FLUENT软件仿真结果拟合得到钟摆模型参数关于罐体形状和充液比的多项式函数.FLUENT仿真和钟摆模型数值计算获得的液体冲击力绕罐体上某点的力矩表明：本文提出的方法能够获得精确的钟摆模型参数值，模型参数的拟合值与实际值的误差均在±4%范围内.
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| 关 键 词： | 液体冲击 椭圆钟摆模型 参数推导 类比分析 FLUENT仿真 |
Parameter Values of Equivalent Mechanical Model for Liquid Sloshing in Partially-filled Tanks |
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| Institution: | (College of Traffic, Jilin Univ, Changchun, Jilin130022, China) |
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| Abstract: | To obtain the pendulum parameter values under specified conditions, analogical analysis was used to derive the relation between shuttle length and liquid sloshing frequencies, and hypothesis and analogical analysis were combined to derive the relation between rod quality and liquid sloshing force. Then, FLUENT was utilized to simulate the liquid free oscillation under different original conditions, and the simulation results were used to draw the fitting functions of pendulum parameters about tank shapes and liquid fill levels. The roll moment obtained from FLUENT simulation and pendulum numerical computation has shown that the method proposed is quite useful and the relative errors between parameters fitting results and the actual ones are all in the range of ±4%. |
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| Keywords: | liquid sloshing trammel pendulum model parameters derivation analogical analysis FLUENT simulation |
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