CFD数值分析三体船片体位置对阻力及兴波干扰影响

三体船的水动力性能是目前水动力学研究的热门。对于中高速三体船来说，其静水阻力的很大一部分由兴波阻力构成，而对于兴波最大的影响因素就是片体位置的布局。以一艘圆舭型三体船为研究对象，运用黏流计算流体力学(CFD)方法模拟分析4种不同片体位置对三体船静水阻力和兴波干扰的影响。数值计算采用自主研发的黏流CFD求解器naoe-FOAM-SJTU。数值预报得到三体船静水阻力结果与模型试验结果吻合较好，验证了当前CFD方法预报三体船阻力的可靠性。通过不同片体位置三体船阻力计算发现，方案4的船型方案阻力最优，且通过细节的主片体间兴波干扰流场的结果给出了不同片体布置方案对三体船阻力和兴波的影响。

CFD prediction of influence of position of trimaran on drag and wave-making interference

The hydrodynamic performance of trimaran is a hot topic in hydrodynamic research. For a medium-high speed trimaran, a large part of its static water resistance is composed of wave-making resistance, and the most important factor for wave-making is the layout of the body position. In this research, a round bilge-type trimaran was taken as the research object, and viscous CFD method was used to simulate and analyze the effects of 4 different plate positions on the static water resistance and wave-making interference of trimaran. The viscous flow CFD solver naoe-Foam-SJTU developed by the research group was used for numerical calculation. The hydrostatic resistance of the trimaran obtained by numerical prediction is in good agreement with the model test results, which verifies the reliability of the current CFD method for predicting trimaran resistance. Through the calculation of the resistance of trimaran ship with different positions of the pieces, it is found that the resistance of scheme 4 is the best, and the influence of different arrangements of the bodies on the resistance and wave generation of trimaran ship is given through the detailed results of the flow field of wave interference between the bodies.