The Effect of Trimming and Sinkage on the Trimaran Resistance Calculation
The Effect of Trimming and Sinkage on the Trimaran Resistance Calculation
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DOI：
10.1016/j.proeng.2015.11.199
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
R. Deng;Li Chao;Hu Debo;G. Zhou
中科院分区：
文献类型：
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作者：
R. Deng;Li Chao;Hu Debo;G. Zhou
采用CFD方法计算了带附体和不带附体的三体船试验船模在不同条件下考虑粘性效应和自由面时的水阻力和阻力分量，以考察垂荡和下沉对阻力计算的影响。对无附加约束的六自由度自由三体船在不同速度下的粘性绕流场进行了数值模拟，并将自由模型的计算结果与试验数据进行了比较，两者吻合较好。计算了主船体和支腿的总阻力和阻力，并讨论了流场的细节。在此基础上，比较了自由模型和约束模型的数值结果，分析了垂荡和下沉的影响。对比分析表明，一些阻力成分容易受到手势的影响。在此基础上，对T型翼型三体船的粘性流场进行了数值模拟，计算了总阻力、阻力分量和姿态。采用T形翼的自由模型的数值计算结果与实验结果吻合较好，并对粘性流场和阻力分量进行了详细的分析。
The clam water resistance as well as the resistance components of a trimaran test model with and without appendage is calculated by CFD method in the different conditions, taking viscous effect and the free surface into account, in order to investigate the effect of trimming and sinkage on the resistance calculation. The viscous flow field around the trimaran without appendage restrained and free in 6 degrees of freedom is simulated at different velocities, the numerical results of the free model are compared with the test data and show good agreement. The total resistance and the resistance of the main hull, as well as the outriggers are calculated and the details of the flow field are discussed. Then, the numerical results of the free model and the captive model are compared in order to analyse the effect of trimming and sinkage. The analysis of the comparison suggests that some of the resistance components are susceptible to the gesture. After that, the viscous flow field of the trimaran with T-foil is simulated and the total resistance, resistance components as well as the gesture are calculated. The comparison of the numerical results of the free model with T-foil and the experimental data also shows good agreement, and the details of viscous flow field as well as the resistance components are analyzed.