高速无人滑行艇静水阻力性能数值预报方法研究

Study on the Numerical Prediction Method of Hydrodynamics for High Speed Unmanned Surface Vehicle of Planning in Calm Water

针对无人滑行艇静水直航运动姿态变化显著的特点,基于RANS方程与重叠网格技术,提出了阻力及艇体姿态的预报方法.以某深V型滑行艇为研究对象,基于Star-CCM+软件平台,开展体积弗劳德数FrΔ从0. 96到4. 8范围的直航数值模拟.将数值模拟结果与船模试验值进行对比,在滑行艇起滑前阻力值与姿态误差小于5%,起滑后误差值小于8%,在工程误差允许的范围内.该方法可以有效的预报高速无人滑行艇的静水直航性能.

There is a significant change in the attitude of the unmanned surface vehicle of planning for sailing inthe calm water. Based on Reynolds Average Navier-Stokes（RANS）equation and overset mesh technology,a methodfor predicting of the resistance and sailing state. Taking a deep-V planning boat as the example,the numericalsimulation of sailing with Volume Froude number Fr Δ from 0. 96 to 4. 8 was carried out under Star-CCM ＋ soft-wareplatform. By comparing the numerical simulation results with the ship model test values,the resistance and ailingstate error of the ship body before planning is less than 5%,and after planning is less than 8% with the allowableengineering error. The method can effectively predict the hydrostatic sailing performance of high speed unmannedsurface vehicle of planning.