|本期目录/Table of Contents|

[1]王春贺,林培锋.三角形仿生微槽对离心泵定常流动影响的数值研究[J].浙江理工大学学报,2023,49-50(自科二):246-253.
 WANG Chunhe,LIN Peifeng.Numerical study of influence of triangular bionic  microgrooves on the steady flow of centrifugal pumps[J].Journal of Zhejiang Sci-Tech University,2023,49-50(自科二):246-253.
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三角形仿生微槽对离心泵定常流动影响的数值研究()
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浙江理工大学学报[ISSN:1673-3851/CN:33-1338/TS]

卷:
第49-50卷
期数:
2023年自科第二期
页码:
246-253
栏目:
出版日期:
2023-03-31

文章信息/Info

Title:
Numerical study of influence of triangular bionic  microgrooves on the steady flow of centrifugal pumps
文章编号:
1673-3851 (2023) 03-0246-08
作者:
王春贺林培锋
浙江理工大学流体传动技术浙江省重点实验室,杭州 310018
Author(s):
WANG Chunhe LIN Peifeng
Key Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang  Sci-Tech University, Hangzhou 310018, China
关键词:
离心泵三角形仿生微槽定常数值模拟内部流动
分类号:
TH311
文献标志码:
A
摘要:
在离心泵叶轮的上下盖板处布置三角形仿生微槽,研究该微槽对离心泵内部流动的影响。采用SST  k-ω 湍流模型,在不同工况下对有、无三角形仿生微槽的离心泵进行了定常数值模拟。结果发现:三角形仿生微槽结构的布置使泵的扬程和效率分别提升了约3.7%和0.8%,扩大了离心泵的稳定工作范围;在0.8~1.2倍标准流量工况下,该微槽不仅减少了叶片压力面附近的漩涡数,还削弱了漩涡强度,显著降低了离心泵叶轮叶片压力面前缘和后缘处的湍动能和拟涡能,其中叶轮流道截面处的拟涡能面平均值降幅为35.0%~78.4%。该研究表明置于叶轮盖板处的三角形仿生微槽可有效提升离心泵的扬程和效率,减小流体冲击导致的能量损耗,从而提高离心泵的内部流动稳定性。

参考文献/References:

1 ]窦华书 , 蒋威 , 张玉良 , . 基于能量梯度理论的离心泵内流动不稳定研究[ J . 农业机械学报 , 2014, 45(12): 88-92.

2Ma R, Ma H W, Zhang Z Y, et al. Effects of a kind of surface groove on flow loss in both rectangular and circular ducts at different Reynolds numbersJ. Journal of Thermal Science, 2016, 25(5): 389-393.

3Choi K S. Near-wall structure of a turbulent boundary layer with ribletsJ. Journal of Fluid Mechanics, 1989, 208: 417-458.

4Ma H W, Tian Q, Wu H. Experimental study of turbulent boundary layers on groove/smooth flat surfacesJ. Journal of Thermal Science, 2005, 14(3): 193-197.

5Modesti D, Endrikat S, Hutchins N, et al. Dispersive stresses in turbulent flow over ribletsJ. Journal of Fluid Mechanics, 2021, 917: A55.

6Liu W L, Ni H J, Wang P, et al. An investigation on the drag reduction performance of bioinspired pipeline surfaces with transverse microgroovesJ. Beilstein Journal of Nanotechnology, 2020, 11: 24-40.

7Asadzadeh H, Moosavi A, Etemadi A. Numerical simulation of drag reduction in microgrooved substrates using lattice-Boltzmann methodJ. Journal of Fluids Engineering, 2019, 141(7): 071111.

8Endrikat S, Modesti D, García-Mayoral R, et al. Influence of riblet shapes on the occurrence of Kelvin-Helmholtz rollersJ. Journal of Fluid Mechanics, 2021, 913: A37.

9Yamagishi Y, Kimura S, Oki M. Study on drag reduction of a circular cylinder with groovesJ. Transactions of the Japan Society of Mechanical Engineers Series B, 2013, 79(805): 1742-1751.

10Sareen A, Deters R W, Henry S P, et al. Drag reduction using riblet film applied to airfoils for wind turbinesJ. Journal of Solar Energy Engineering, 2014, 136(2): 021007.

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备注/Memo

备注/Memo:
收稿日期: 2022-09-22
网络出版日期:2022-12-05
基金项目: 国家自然科学基金联合基金项目(U2006221);国家自然科学基金面上项目(51676173);浙江理工大学521人才培养计划
作者简介: 王春贺(1998—),男,辽宁锦州人,硕士研究生,主要从事流体机械仿生改型方面的研究
通信作者: 林培锋,E-mail:linpf@zstu.edu.cn
更新日期/Last Update: 2023-04-03