摘要
近年来,随着计算机技术的不断发展和计算能力的不断提高,计算流体力学成为预报螺旋桨水动力性能及获取船舶螺旋桨周围的粘流场等流动特征的一个重要手段。本文以DTRC 4119螺旋桨作为研究对象,介绍粘性流体CFD方法在螺旋桨敞水性能预报中的数值模拟流程。基于粘性流体CFD方法,对粘性流场中敞水螺旋桨的水动力性能进行预报,通过与实验数据对比,分析在不同进速系数下的推力系数、转矩系数、螺旋桨表面压力分布以及螺旋桨后尾流场等情况。根据结果的比较分析可知,基于CFD方法可以形象、真实地获知螺旋桨表面的压力以及尾部流场的分布情况。最后总结了在CFD数值模拟中应注意的问题。
In recent years,the computational fluid dynamics（CFD）method was widely used in getting the viscous flow field around propeller, calculating the hydrodynamic performance of propeller and other related aspects. In this paper,CFD software was used to predict the hydrodynamic performance of propeller in the viscous flow regions including thrust and torque coefficients, section pressure distributions and flow field of the propeller at different advance coeffieients. Then, the comparion and analysis of the propeller performance between calculating and model test rusuhs were carried out. Finally, the experience of CFD application and technology were provided.
出处
《舰船科学技术》
北大核心
2013年第4期29-34,共6页
Ship Science and Technology
关键词
CFD
螺旋桨
水动力性能
粘性尾流场
CFD
marine propeller
hydrodynamic performance
viscous flow field
