| 引用本文: | 林明东,胡凡,张为华.超空泡航行体锥形空化器优化设计.[J].国防科技大学学报,2010,32(4):37-41.[点击复制] |
| LIN Mingdong,HU Fan,ZHANG Weihua.Optimal Design of Conical Cavitator of Supercavitating Vehicles[J].Journal of National University of Defense Technology,2010,32(4):37-41[点击复制] |
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| 超空泡航行体锥形空化器优化设计 |
| 林明东, 胡凡, 张为华 |
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(国防科技大学 航天与材料工程学院，湖南 长沙 410073)
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| 摘要: |
| 分析比较超空泡外形计算的不同经验公式，结果表明Guzevsky模型具有较好的精度与适用范围。建立了以减小阻力、增大空化数、增加舱内容积为优化目标的超空泡航行体锥形空化器设计模型，以权重因子法和遗传算法求解了优化问题，验证性计算结果与已有文献吻合。研究了空化数、航行体长径比等因素对超空泡航行体空化器设计的影响规律，结果表明空化数是影响航行阻力的首要因素，空化数决定了超空泡长径比并使之与航行体外形匹配，通过优化设计能够在不增加阻力的情况下有效提升航行体舱内容积。 |
| 关键词: 超空泡 空化器 权重因子法 遗传算法 优化设计 |
| DOI： |
| 投稿日期：2010-03-22 |
| 基金项目: |
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| Optimal Design of Conical Cavitator of Supercavitating Vehicles |
| LIN Mingdong, HU Fan, ZHANG Weihua |
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(College of Aerospace and Materials Engineering, National Univ. of Defense Technology， Changsha 410073, China)
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| Abstract: |
| Different empirical formulae in the calculation of the supercavity shape were analyzed, showing that the Guzevsky formulae has good precision and scope of application. Targeting on reducing the drag, enhancing the cavitation number and enlarging the volume of the supercavitating vehicle, an optimal design model of the conical supercavitator was built based on the Guzevsky formulae. The weight method and genetic algorithm were applied in solving the optimal problem. The results are consistent with the current theory. Effect of aspect ratios, cavitation numbers in the design process were studied. The results indicate that cavitation number is the most important factor that affects the dimension of the supercavity and the volume of the vehicle has been increased significantly through the optimal design process. |
| Keywords: supercavitation cavitator weight method genetic algorithm optimal design |
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