仿海豚皮肤结构的功能表面提高离心泵效率

发布时间：2018-05-17 17:20

本文选题：泵 + 仿生　；参考：《农业工程学报》2016年07期

【摘要】：为了提供一种可利用仿生功能表面提高泵类产品效率的方法,该文分别以鲨鱼皮肤及海豚皮肤表面结构为模仿原型,设计了2种仿生功能表面,模仿鲨鱼皮肤结构的功能表面为模型1,仿海豚皮肤结构的功能表面为模型2,并以吉林市奥吉通泵业有限公司生产的200QJ50-26离心式水泵为载体,进行了试验研究。研究结果表明,模型1可提高水泵效率2%~3%,模型2可提高水泵效率5%,且模型2在全流段范围内增效效果显著。利用氢气泡流动显示试验,从流场尾迹再附点及涡距2个方面说明了上述2种模型对流体介质的控制机制。试验结果表明,模型2相比模型1,其尾迹再附点距离降低5 mm,而尾迹涡距距离却增加3 mm。说明模型2的压差阻力得到降低,此外,模型2通过降低涡生成密度及速度的方式降低能量的耗散,其减阻效果更明显。该研究为仿生功能表面在以流体为工作介质的流体机械及在流体介质中运行的交通工具的全面应用提供了参考。
[Abstract]:In order to provide a method of using bionic function to improve the efficiency of pump products, this paper designs 2 kinds of bionic functional surfaces with shark skin and dolphin skin surface structure. The functional surface of shark skin structure is model 1. The functional surface of porpoise skin structure is model 2 and Jilin AUJI. The 200QJ50-26 centrifugal pump produced by the pump industry Co., Ltd. has been tested. The results show that the model 1 can improve the efficiency of the pump 2%~3%, and the model 2 can increase the efficiency of the pump by 5%, and the model 2 has a remarkable effect in the full flow section. By the hydrogen bubble flow display test, the reattachment point and the vortex distance from the wake of the flow field are 2. The control mechanism of the 2 models for the fluid medium is explained. The experimental results show that the model 2 is compared with the model 1, and the distance of the wake reattachment point is reduced by 5 mm, while the wake distance distance is increased by 3 mm., and the pressure difference resistance of the model 2 is reduced. Furthermore, model 2 reduces the energy dissipation by reducing the eddy formation density and velocity, and its drag reduction is reduced. The effect is more obvious. The study provides a reference for the comprehensive application of biomimetic functional surfaces in fluid machinery in fluid and in a fluid medium operating in a fluid medium.
【作者单位】：吉林大学工程仿生教育部重点实验室;吉林珲春矿业集团;青岛四方车辆研究所有限公司;
【基金】：国家自然科学基金面上项目资助项目(51475203) 吉林省科技创新与科技成果转化项目(20140307030GX) 长春市重大科技攻关专项资助项目(13KG33)
【分类号】：Q811;TH311

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