| 引用本文: | 周军伟,李福正,梅蕾.无空化导管桨的极限效率分析[J].哈尔滨工业大学学报,2017,49(4):149.DOI:10.11918/j.issn.0367-6234.201603075 |
| ZHOU Junwei,LI Fuzheng,MEI Lei.Peak efficiency analysis of non-cavitation ducted propeller[J].Journal of Harbin Institute of Technology,2017,49(4):149.DOI:10.11918/j.issn.0367-6234.201603075 |
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| 摘要: |
| 为提高导管螺旋桨的推进效率，改善水下潜器的续航力，采用数值方法对19A/Ka4系列导管螺旋桨在不同长径比、直径比、螺距比和盘面比下的流场进行了模拟.对不同参数下导管螺旋桨的推力、扭矩和效率进行了分析，得出了导管长径比对性能几乎没有影响，但从流场观察来看，长径比增大使梢涡涡核压力提升，增大了空泡数；减小导管内外壁直径比和螺旋桨盘面比，都会使导管桨的效率提高，而推力系数和扭矩系数略有减小.螺距比对导管螺旋桨效率的影响与传统桨类似，随着螺距比的增大，其最高点效率逐渐增大，而后几乎不变.在限定了盘面比和直径比范围的前提下，对该系列导管螺旋桨的极限效率进行了探索.结果表明，该系列导管螺旋桨的最高效率出现在最小盘面比和较小直径比的情况下.
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| 关键词: 导管螺旋桨 直径比 长径比 螺距比 盘面比 |
| DOI：10.11918/j.issn.0367-6234.201603075 |
| 分类号:U661.31；U664.33 |
| 文献标识码:A |
| 基金项目:国家自然科学基金(51309070)；山东省自然科学基金(ZR2012EEQ004) |
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| Peak efficiency analysis of non-cavitation ducted propeller |
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ZHOU Junwei,LI Fuzheng,MEI Lei
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（School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology in Weihai, Weihai 264209, Shandong, China)
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| Abstract: |
| To enhance the propulsive efficiency of ducted propeller for better endurance of underwater-vehicle, 19A/Ka4 series ducted propeller is studied through numerical simulation to analyze the factors of the duct and blade on the hydrodynamic performance by change the such parameter such as length-diameter ratio, diameter ratio, blade area ratio and pitch ratio under different mesh models. It is discovered that the length-diameter ratio has almost no influence of the open water performance, though, the cavitation performance is better with the increase of length-diameter ratio. The lesser duct diameter ratio and blade area ratio will increase the efficiency, and accordingly, the thrust coefficient and torque coefficient will decrease. The influence of the pitch ratio on ducted propeller is similar to the conventional propeller, with the increase of pitch ratio, the peak efficiency will increase until to a constant value. Based on aforementioned research in a specified range of blade area ratio and diameter ratio, it is found that the minimum blade area ratio and minor diameter ratio will generate the extreme efficiency.
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| Key words: ducted propeller diameter ratio length-diameter ratio pitch ratio blade area ratio |
