| 引用本文: | 张孝石,王聪,曹伟,许昊.活性剂对水下航行体减阻特性的影响[J].哈尔滨工业大学学报,2017,49(4):137.DOI:10.11918/j.issn.0367-6234.201511112 |
| ZHANG Xiaoshi,WANG Cong,CAO Wei,XU Hao.Influence of surfactant on drag reduction characteristic of an underwater vehicle[J].Journal of Harbin Institute of Technology,2017,49(4):137.DOI:10.11918/j.issn.0367-6234.201511112 |
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| 摘要: |
| 为减小水下航行体的阻力，研究通活性剂溶液的水下航行体湍流减阻的流动特性.通过从航行体头部向航行体边界通活性剂溶液的方法，分别对不同质量浓度和不同速度情况进行减阻实验研究，并分析了不同攻角下活性剂溶液对阻力和升力的影响.实验中活性剂溶液质量浓度分别为200、400、600、800和1 000 mg/L，流速为4~10 m/s，对比分析了阻力系数.实验结果表明：在活性剂溶液质量浓度为200 mg/L时航行体减阻效果较弱，当活性剂溶液质量浓度增加到1 000 mg/L时，减阻百分比高达40.8%；在活性剂质量浓度为1 000 mg/L时，当水流速度从4 m/s逐渐增大到10 m/s，减阻百分比在12.5%和40.8%之间变化；活性剂对有攻角的航行体仍然有减阻效果并且对升力产生较小影响.
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| 关键词: 水下减阻 活性剂 航行体模型 水洞实验 升力 |
| DOI：10.11918/j.issn.0367-6234.201511112 |
| 分类号:TV131.32 |
| 文献标识码:A |
| 基金项目:黑龙江省自然科学基金(A201409) |
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| Influence of surfactant on drag reduction characteristic of an underwater vehicle |
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ZHANG Xiaoshi,WANG Cong,CAO Wei,XU Hao
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(School of Astronautics, Harbin Institute of Technology, Harbin 150001, China)
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| Abstract: |
| To reduce the drag of underwater vehicle, experiment is carried out to study the turbulent drag-reducing of underwater vehicle injected with surfactant in a water tunnel. For the experimental work presented here, surfactant is injected from the head of the vehicle. The drag reduction (DR) of surfactant as a function of fluid velocity and surfactant concentration are investigated. The influences of the surfactant on the lift-force and drag-force with different attack angle are analyzed. Surfactant solutions at different concentrations, namely 200, 400, 600, 800 and 1000 mg/L, are used to examine the influence of surfactant on drag coefficient. The flow velocities are set between 4 and 10 m/s. The present results show the DR effect is weak when the surfactant concentration is 200 mg/L. With the increase of the surfactant concentration to 1 000 mg/L, the drag coefficient is reduced by about 40.8%. The DR ratio ranges between 12.5% and 40.8% at all flow velocities up to 10 m/s from 4 m/s when the surfactant concentration is 1 000 mg/L. With the increase of surfactant concentration, the drag coefficient of the vehicle with angle of attack is also reduced and there is slight effect on the lift-force coefficient.
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| Key words: drag reduction surfactant vehicle model tunnel experiment lift-force |
