基于DES方法的螺旋桨尾涡演化数值研究 |
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引用本文: | 陈志明,严谨,伍斯杰,吴英友,黄晓恒.基于DES方法的螺旋桨尾涡演化数值研究[J].船舶工程,2018,40(1):61-64. |
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作者姓名: | 陈志明 严谨 伍斯杰 吴英友 黄晓恒 |
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作者单位: | 广东海洋大学海洋工程学院,广东湛江,524088;太阳鸟游艇股份有限公司,广东珠海,519055;中船黄埔文冲船舶有限公司,广州,510715 |
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基金项目: | 广东海洋大学创新强校工程科研项目(GDOU2016050258);省级大学生创新创业项目“休闲游艇创新设计及性能分析”(CXXL2014078);广东海洋大学“海洋渔业设施装备研究中心”(GDOU2017052503)。 |
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摘 要: | 采用分离涡模拟(DES)方法对多工况下螺旋桨的尾流场特性及尾涡结构进行数值研究,应用滑移网格技术完成螺旋桨敞水试验模拟,采用Spalart-Allmaras湍流模型封闭N-S方程组。数值计算结果显示:采用DES方法得到的水动力特性结果与模型试验结果吻合度高,DES方法能够较好地捕捉到螺旋桨尾流场中复杂的尾涡结构,螺旋桨不同桨叶产生的梢涡之间的自诱导和相互诱导作用引起尾涡结构形态变化,4叶桨梢涡结构之间会产生2次融合重组,毂涡振荡与梢涡演化之间存在相互干扰作用,不同进速系数下尾涡演化规律基本一致。
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关 键 词: | 分离涡模拟方法 螺旋桨 涡结构 诱导 融合 |
收稿时间: | 2017/6/30 0:00:00 |
修稿时间: | 2018/1/19 0:00:00 |
Detached Eddy Simulation of Wake Vortex Evolution for a Propeller |
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Institution: | Guangdong Ocean University,Guangdong Ocean University,Sunbird Yacht Co., Ltd,Guangdong Ocean University,CSSC Huangpu-Wenchong Shipbuilding Co.Ltd |
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Abstract: | The vortex structures of propeller directly affects the performance of propeller, such as hydrodynamic performance, cavitation and noise. Detached eddy simulation (DES) numerical method is employed in the study of propeller wake characteristics and vortex structure under different conditions. The sliding grid technique is used in the propeller open water performance test, and the Spalart-Allmaras turbulence model is used in the N-S equations. The numerical results show that the results of dynamic characteristics obtained by DES method and the model test match well. DES method can capture the complex vortex structures well in the flow field of the propeller, and the vortex structure changes, which is caused by the self and mutual induction between different blade tip vortex of the propeller, two groupings will happen between the tip vortex structures for a typical 4-blade propeller, and there is mutual interference effect between hub vortex oscillation and tip vortex evolution. However, the vortex evolution regular is basically the same for all conditions. |
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Keywords: | Vortex structure DES Induction Grouping |
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