基于PIV的客滚船风阻流场研究

Research on Wind Resistance and Flow Field of Ro-ro Passenger Ship Based on PIV

为准确分析客滚船在不同风向角下的流场分布,基于PIV技术研究了某型客滚船在25m/s风速下,5个不同风向角的风阻变化和流场分布;利用PIV技术得出某型客滚船纵向、横向以及水平方向的空气流场特性。结果表明:随着风向角的增加,纵向风轴阻力和横向侧向力呈"抛物线"规律变化,偏航力矩呈"正弦曲线"分布,并存在两个方向相反的阻力峰。利用PIV流场分布图与常规测力试验的风阻曲线对客滚船风阻流场进行分析研究,所得结果可为以后的CFD计算验证以及后期风阻优化提供参考依据。

The wind resistance and flow field of a ro-ro passenger ship with a wind speed of 25m/s under five different wind angles are studied based on the particle image velocimetry(PIV)technology in order to analyze the flow field distribution of the ro-ro passenger ship under different wind angles.The characteristics of the longitudinal,transverse and horizontal wind flow field of the ro-ro passenger ship are obtained by using the PIV technology.The results show that the longitudinal wind axis resistance and the transverse lateral force change parabolically with the increase of wind angles,while the yaw moment changes in a sinusoidal manner with two resistance peaks at opposite directions.The wind resistance and flow field of the ro-ro passenger ship are analyzed and studied based on the flow field graph obtained by PIV and the wind resistance curve got from the conventional force tests.It can provide reference for the calculation and validation by using CFD tools as well as the optimization of the wind resistance in the future.