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LNG船舶球形货舱风阻力的数值模拟

DOI: 10.16411/j.cnki.issn1006-7736.2015.02.006, PP. 35-40

Keywords: LNG船舶,球形货舱,风阻力,数值模拟,RNGk-ε湍流模型,大涡模拟

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Abstract:

:为获得LNG船舶更准确的风压分布和更多的风场细节,只对LNG船舶的货舱风阻进行了数值分析,忽略了船体以及其他上层建筑部分。选用RNGk-ε湍流模型和大涡模拟方法两种数值模拟方法对均匀风场中的LNG船舶球形货舱进行了数值模拟。为验证数值方法和网格划分的合理性,对均匀风场中的半球体进行了数值模拟,将计算结果与风洞试验的数据进行了比较,与试验结果得到了很好的吻合。然后对LNG船舶球形货舱的绕流场和风压分布进行了分析。研究发现,大涡模拟方法对漩涡流动的模拟有较好的效果。

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