液化天然气船用储罐形貌对流体晃动特性影响的数值分析(英文)
发布时间:2021-05-10 07:15
为了分析浮式液化天然气平台薄膜式储罐底部斜坡对流体晃动的影响规律,建立了仿真模型用于描述晃动储罐内的流体行为.流体自由液面运动通过流体体积法和k-ε湍流模型进行模拟,利用文献中的实验数据和仿真结果对该模拟的准确性进行验证.为了研究底部斜坡对流体晃动的影响,对不同斜坡尺寸、填充率以及储罐低阶固有频率下的流体晃动过程进行了仿真模拟.结果显示,固有频率可由水力参数的平均峰值决定,固有频率和储罐壁面压力载荷随着斜坡尺寸的增大而减小,当斜坡占比从5%增加到20%,壁面峰值压力下降了5.4520kPa.但该壁面峰值压力的变化只在填充率较低时明显,当填充率较高,如60%时,流体运动特性稳定,受斜坡结构改变的影响很小.流体仿真建模与分析结果对薄膜式液化天然气储罐的优化设计和运行提供了数据支撑.
【文章来源】:Journal of Southeast University(English Edition). 2020,36(03)EI
【文章页数】:9 页
【文章目录】:
1 Computational Model
1.1 Governing equations
1.2 Governing equations
1.3 Grid independence study
2 Results and Discussion
2.1 Verification and validation
2.2 Influence of slope size on natural frequency
2.2.1 Theoretical methods to locate the natural frequency
2.2.2 Calculating natural frequency by the average peak method
2.2.3 Influence of slope size on natural frequency
2.3 Influence of slope size on sloshing behaviour
3 Conclusions
本文编号:3178937
【文章来源】:Journal of Southeast University(English Edition). 2020,36(03)EI
【文章页数】:9 页
【文章目录】:
1 Computational Model
1.1 Governing equations
1.2 Governing equations
1.3 Grid independence study
2 Results and Discussion
2.1 Verification and validation
2.2 Influence of slope size on natural frequency
2.2.1 Theoretical methods to locate the natural frequency
2.2.2 Calculating natural frequency by the average peak method
2.2.3 Influence of slope size on natural frequency
2.3 Influence of slope size on sloshing behaviour
3 Conclusions
本文编号:3178937
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