外输浮筒水动力计算方法比较

摘要

To predict the hydrodynamic performance of CALM buoy accurately,the hydrodynamic calculation methods based on radiation/diffraction theory and slender body theory were analyzed respectively.The viscous loading of CALM buoy was calcu-lated by using Morison elements,and that of the skirt plate of CALM buoy was calculated by designing the independent disc mod-el.The model test for CALM buoy was conducted to verify and contrast the results of the two calculation methods.It was found that the calculated results of the two methods are basically consistent with those of model test in motion amplitude and overall trend,and the hydrodynamic calculation models of CALM buoy proposed in this paper are proved to be correct.%为准确预报外输浮筒的水动力性能,分别对基于辐射/绕射理论和细长体理论的水动力计算方法进行改进,并给出了相应的理论计算模型.提出一种莫里森单元+碟形单元的组合模型以计算浮筒主体及其裙板的黏性载荷.设计模型试验对2种计算方法进行验证对比,发现2种方法的计算结果与试验结果在运动幅值和总体趋势上基本保持一致,验证了外输浮筒水动力计算模型的正确性,并且基于辐射/绕射理论的计算方法精度更高.