Abstract: Planning craft, whose weight is predominantly supported by hydrodynamic lift, has the advantages of lower resistance and faster speed. It is widely used in various scenarios such as entertainment, rescue and military applications. The amplitudes of the pitch and heave in the sliding state during the sailing of the planning craft are higher than those of the traditional displacement ships, especially, periodic exit and entry similar as jumping phenomena will occur when the planning craft travels in waves. Compared with traditional displacement ships, the planning craft has larger amplitudes of the pitch and heave when it travels at the sliding state, especially, periodic exit and entry similar as jumping phenomena will occur when it travels in waves. The resistance, propulsion and seakeeping performance of a deep-V planning craft (generic prismatic planning hull, GPPH) are numerically simulated by using a self-developed dynamic overset grid technology combined with the open-source CFD library OpenFOAM. The comparison between the numerical calculation results and the model test results shows that the dynamic overset grid technology can better capture the large pitch and heave of the planning craft. The periodic exit and entry of the hull generate large periodic slamming pressure on the bottom of the ship, and the numerical calculations can also provide reasonable predictions of the pressure.

Key words: planning craft, overset grid, resistance and propulsion, seakeeping

摘要： 滑行艇航行时重力主要靠水动力升力支撑,其具有阻力小、速度快等优点,目前在娱乐、救援、军事等多种场景有着广泛应用。滑行艇在航行过程中处在滑行状态,纵摇、升沉运动幅值较常规排水型船舶高,尤其是在波浪中航行时会出现周期性出水、入水类似跳跃的现象。该文使用自主开发动态重叠网格技术,结合开源计算流体力学库OpenFOAM平台对标准的深V型滑行艇（generic prismatic planing hull,GPPH）进行了快速性、耐波性数值模拟,并将数值计算结果与模型试验结果进行对比,证明了使用动态重叠网格技术能较好地捕捉滑行艇大幅纵摇、升沉运动;艇体周期性出水、入水会在船底部产生周期性的大幅值抨击压力,文中的数值计算也可以得出合理的压力预报结果。

关键词: 滑行艇, 重叠网格, 快速性, 耐波性