A parametric sensitivity study on LNG tank sloshing loads by numerical simulations
A parametric sensitivity study on LNG tank sloshing loads by numerical simulations
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DOI：
10.1016/j.oceaneng.2006.03.014
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发表时间：
2007
影响因子：
5
通讯作者：
D. Lee;Moo-Hyun Kim;S. Kwon;Jang-Whan Kim;Young-Bum Lee
中科院分区：
文献类型：
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作者：
D. Lee;Moo-Hyun Kim;S. Kwon;Jang-Whan Kim;Young-Bum Lee
利用计算流体动力学（CFD）程序对液化天然气（LNG）储罐晃荡载荷进行了一系列非匹配无量纲尺度参数的参数敏感性研究。首先，进行了简要的量纲分析，以确定控制和非匹配的无量纲参数，假设弗劳德标度律采用。然后通过数值模拟对非匹配参数，如流体粘度，液气密度比，气隙压力和压缩性的敏感性进行了检查。CFD模拟也验证了实验结果。得出的结论是，粘度和密度比的影响是微不足道的，而缺量空间的可压缩性起着重要的作用，正如Bass等人所指出的那样[Bass，R.L.，鲍尔斯，E. B.，Trudell，R.W.，Navickas，J.，Peck，J.C.，Yoshimura，N.，恩多，S.，波茨，B.F.M.，1985.比例LNG晃动实验的建模准则。ASME 107，272-280的交易]。
A series of parametric sensitivity studies on unmatched dimensionless scale parameters is carried out on the liquified natural gas (LNG) tank sloshing loads by using a computational fluid dynamics (CFD) program. First, a brief dimensional analysis is conducted to identify the governing and non-matched non-dimensional parameters, assuming that Froude scaling law is adopted. Then the sensitivity of impact pressure is checked through numerical simulations against non-matched parameters, such as fluid viscosity, liquid–gas density ratio, and ullage pressure and compressibility. The CFD simulations are also verified against experimental results. It is concluded that the effects of viscosity and density ratio are insignificant, while the compressibility of ullage space plays an appreciable role, as was pointed out by Bass et al. [Bass, R.L., Bowles, E.B., Trudell, R.W., Navickas, J., Peck, J.C., Yoshimura, N., Endo, S., Pots, B.F.M., 1985. Modeling criteria for scaled LNG sloshing experiments. Transactions of the ASME 107, 272–280].