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首页> 外文会议>International offshore and polar engineering conference;ISOPE-2009 >Jack-Up Leg Hydrodynamic Load Prediction - a Comparative Study of Industry Practice with CFD and Model Test Results
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Jack-Up Leg Hydrodynamic Load Prediction - a Comparative Study of Industry Practice with CFD and Model Test Results

机译：自升式支腿水力负荷预测-带有CFD和模型测试结果的行业实践比较研究

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摘要

In jack-up structure and foundation designs, the accurate prediction ofdrag and wave forces is important but difficult. For the assessment ofhydrodynamic forces SNAME T&R Bulletin 5-5A provide a usefulempirical approach. This approach was developed largely based onwind tunnel measurement data in 90s of last century. However, insome cases reported, drag forces calculated by the SNAMErecommended practice differ appreciably from those obtained fromwind tunnel tests. To investigate this puzzle, it is worth having acomprehensive comparative study among SANME practices, CFD(Computational Fluid Dynamic) and wind tunnel measurement. In thispaper, a typical jack up leg configuration is selected. Thehydrodynamic forces on its leg due to solely current, solely waves andcombined wave and current are calculated using the aforementionedSNAME, CFD and wind tunnel test approaches. Through thecomparison of the calculated drag and wave forces from differentapproaches, this paper tries to confirm the conservativeness adhered inthe SNAME approach compared to the CFD and model test results.
机译：在自升式结构和地基设计中，准确预测阻力和波浪力很重要，但很困难。为了评估流体动力，SNAME T＆R Bulletin 5-5A提供了一种有用的经验方法。这种方法主要是根据上世纪90年代的风洞测量数据开发的。但是，在某些情况下，通过SNAME推荐的做法计算出的阻力与从风洞试验获得的阻力明显不同。为了研究这个难题，值得在SANME实践，CFD（计算流体动力）和风洞测量之间进行全面的比较研究。在本文中，选择了典型的自升式支腿配置。使用前述的SNAME，CFD和风洞测试方法，可以计算出由于单独的电流，单独的波浪以及组合的波浪和电流而在其腿上产生的水动力。通过比较不同方法计算出的阻力和波动力，本文试图确认与CFD和模型测试结果相比，SNAME方法所遵循的保守性。

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