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Volume 34, Issue 3
March 2022
Research Article| March 02 2022
Peilu Hu (胡珮璐)
;
Peilu Hu (胡珮璐)
1
Department of Mechatronics Engineering, Zhejiang University City College
, Hangzhou 310015,
China
2
State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University
, Hangzhou 310027,
China
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Pengfei Wang (王鹏飞);
Pengfei Wang (王鹏飞) a)
1
Department of Mechatronics Engineering, Zhejiang University City College
, Hangzhou 310015,
China
a)Author to whom correspondence should be addressed: wangpf@zucc.edu.cn
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Li Liu (刘丽);
Li Liu (刘丽)
1
Department of Mechatronics Engineering, Zhejiang University City College
, Hangzhou 310015,
China
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Xiaodong Ruan (阮晓东);
Xiaodong Ruan (阮晓东)
2
State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University
, Hangzhou 310027,
China
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Lingjie Zhang (张玲洁);
Lingjie Zhang (张玲洁)
3
Zigong Innovation Center of Zhejiang University
, Zigong 643000,
China
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Zhongbin Xu (许忠斌)
Zhongbin Xu (许忠斌)
4
Institute of Process Equipment, College of Energy Engineering, Zhejiang University
, Hangzhou 310027,
China
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Author & Article Information
a)Author to whom correspondence should be addressed: wangpf@zucc.edu.cn
Physics of Fluids 34, 033603 (2022)
Article history
Received:
January 04 2022
Accepted:
February 14 2022
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Citation
Peilu Hu, Pengfei Wang, Li Liu, Xiaodong Ruan, Lingjie Zhang, Zhongbin Xu; Numerical investigation of Tesla valves with a variable angle. Physics of Fluids 1 March 2022; 34 (3): 033603. https://doi.org/10.1063/5.0084194
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A Tesla valve is a passive check valve but with no-moving parts. The unique diode nature of Tesla valves makes them attractive for fluid control in many engineering fields, such as microfluidic systems and hydrogen fuel systems. The effectiveness of a single-stage Tesla valve can be modified by changing its geometric parameters. In this study, four groups of Tesla valves by changing the angle between 45° and 90° are examined. Numerical and mathematical methods are used to compare the diode characteristics of the four groups of Tesla valves, and proper orthogonal decomposition is applied to analyze the main flow fields. Of particular interest is that the diode property is induced by separation bubbles, with those near the left junction of the Tesla valve providing the main control mechanism for the fluid flow. For the forward flow, the main bubble pushes the fluid into the straight channel, while for the reverse flow, the main bubble blocks the outlet of the Tesla valve, making it difficult for fluid to flow out. Notably, our findings suggest that the diode performance of Tesla valves is optimal at θ = 70–80°. The results presented in this paper identify the functional relationship between the angle of the Tesla valve, Reynolds number, and diodicity, and suggest strategies for the optimal design and performance predictions of Tesla valves.
Topics
Flow control, Flow simulations, Fluid flows, Laminar flows, Navier Stokes equations, Microfluidic devices
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© 2022 Author(s). Published under an exclusive license by AIP Publishing.
2022
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