M-hull ship is a new kind of planning craft with the resistance characteristics of the normal planning craft ,the sea-keeping performance of the high-speed multi-hull ship and the excellent resist-ance performance of the micro-bubble drag reduction ship .In order to achieve the goal to dynamically capture the complex changing navigation state during different navigation phases ,accurately predict the resistance performance and simulate the two-phase flow during non-navigation phase of displace-ment ,the RANS simulation from the navigation phase of displacement to transition and planning in the static water is carried out based on the overset gird technology of Star-CCM + .The mesh inde-pendence study is performed according to the grid size closed to the ship surface and an optimal mesh scheme is determined combined with the computing resource .Comparing the compute values of the re-sistance and trim angle and the experiment values ,the influence between turbulence model and the y+value ,and the time step adaptive is discussed during different navigation phases .The drag reduction principle during different navigation phase is also discussed according to the simulation of the two-phase flow around the M-hull ship .%M型船是一种新型滑行艇,同时具备普通滑行艇的阻力特性、高速多体船的耐波性能,以及微气泡减阻船优异的阻力性能.为了实现对M型船不同航行阶段中复杂变航态过程的动态捕捉、对阻力的精确预报,以及对非排水航行阶段复杂的水气二相流场的模拟,基于粘性C FD软件STAR-CCM+的重叠网格技术,对M型船在静水中从排水、过渡到滑行航行阶段进行数值模拟,从船体表面网格大小讨论了网格独立性,结合计算资源以确定最佳的网格方案;将阻力和纵倾角的计算值与试验值进行对比,从湍流模型与y+值以及时间步长独立性讨论了不同航行阶段的模拟需求;从水气二相流的模拟讨论了M型船在不同航行阶段的减阻原理.
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