直航和回转工况下吊舱推进器水动力性能数值计算方法研究

发布时间：2018-05-17 13:33

本文选题：吊舱推进器 + 水动力性能　；参考：《推进技术》2016年03期

【摘要】：为了探索吊舱推进器在回转工况下的水动力性能变化规律,采用全结构化网格离散计算域,基于RANS方法结合SST k-ω湍流模型和滑移网格技术计算了吊舱推进器在直航和回转工况下的水动力性能,并与试验数据进行了对比,进一步详细分析了螺旋桨和吊舱之间的相互干扰作用。结果表明,RANS方法结合全结构化网格可以较精确地预报直航和回转工况下的水动力性能,设计工况下计算值与试验数据的偏差在±3%以内;由于螺旋桨与吊舱之间的强烈相互干扰作用,吊舱桨的瞬时推力系数和扭矩系数成周期性变化,波动频率与桨叶数相等;直航状态下,吊舱桨的推力系数和扭矩系数最小,其值随回转角的增大而增大;而吊舱单元的推力系数随回转角的增大而减小;吊舱单元的横向力系数最小,基本上为0,其值随回转角的增大而迅速增大。
[Abstract]:In order to explore the variation of hydrodynamic performance of podded thrusters under rotating conditions, a fully structured grid discrete computing domain is used. Based on RANS method and SST k- 蠅 turbulence model and sliding grid technology, the hydrodynamic performance of podded propeller under direct and rotary conditions is calculated and compared with experimental data. The interaction between propeller and pods is analyzed in detail. The results show that the hydrodynamic performance under direct and rotary conditions can be predicted more accurately by using a fully structured grid, and the deviation between the calculated values and the experimental data under the design condition is less than 卤3%. Because of the strong interaction between the propeller and the pods, the instantaneous thrust and torque coefficients of the pods vary periodically, and the fluctuation frequency is equal to the number of blades. The value increases with the increase of the angle of rotation, while the thrust coefficient of the podded unit decreases with the increase of the angle of rotation, and the transverse force coefficient of the podded unit is the smallest, basically 0, and the value increases rapidly with the increase of the angle of rotation.
【作者单位】：海军工程大学舰船工程系;国防科学技术大学指挥军官基础教育学院;
【基金】：国家自然科学基金(51479207;51179198) 工信部高技术船舶科研项目(工信部联装[2012]534号)
【分类号】：U664.3

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