混合式CRP推进器水动力特性及尺度效应研究

项目名称： 混合式CRP推进器水动力特性及尺度效应研究

项目编号： No.51479207

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 其他

项目作者： 熊鹰

作者单位： 中国人民解放军海军工程大学

项目金额： 82万元

中文摘要： 混合式CRP推进器是一种组合传统轴系螺旋桨和吊舱推进器实现的新型对转桨推进方式。混合式CRP推进器具有推进效率高、操纵性能好、布置灵活、废气排放低等优点，在目前绿色船舶的背景下具有广阔的应用前景。混合式CRP推进器前后桨转速比可调节变化，相互干扰强烈，且后面的吊舱推进器可充当舵的作用左右回转，水动力特性十分复杂。目前国内外大多采用模型试验方法来研究其水动力性能，尚未建立模型到实尺度的换算方法，更未考虑操舵这种复杂工况。 本项目研究直航和操舵状态下混合式CRP推进器水动力性能数值计算方法，改进和完善混合式CRP推进器的敞水试验，开展混合式CRP推进器前后桨的转速比和间距等主要设计参数对其水动力性能的影响规律研究，同时探索混合式CRP推进器水动力性能尺度效应作用，为混合式CRP推进器的设计及应用奠定理论基础。

中文关键词： 混合式CRP推进器；水动力特性；尺度效应；数值模拟；面元法

英文摘要： The hybrid CRP-POD propulsion system is a new contra-rotating propulsor which consists of a forward conventional shaft propeller and an aft podded propulsor. Under the Green Ship background, the hybrid CRP-POD propulsion system has a bright future due to the high propulsive efficiency, good maneuverability, flexible arrangement and low exhaust emission. The variable rotate speed ratio of forward and aft propeller, the strong interaction between forward and aft propeller and the deflection of podded propulsor make the hydrodynamic characteristic very complicated. At present, model test is the dominant method to study the hydrodynamic performance at home and abroad without considering the steering condition, and the extrapolated procedure for model scale to full scale has not been established. In this project, the numerical prediction of hydrodynamic characteristic of the hybrid CRP-POD propulsion system will be studied in straightway sailing and steering condition, the open water test will be conducted, and the effect of rotate speed ratio and distance between forward and aft propeller on hydrodynamic performance will be explored; and last the scale effect of hydrodynamic performance will be studied. All these study will lay a foundation for the design and application of the hybrid CRP-POD propulsion system.

英文关键词： the hybird CRP-POD propulsion system;hydrodynamic characteristic;scale effect;numerical simulation;surface pannel method