Fluid-structure Interaction Modeling and Vibration Characteristics of Check Valve in High-pressure Diaphragm Pump

CHEN Hongchao; MA Jun; WANG Xiaodong; HU Kai

doi:10.13433/j.cnki.1003-8728.20230029

Volume 43 Issue 7

Jul. 2024

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Article Navigation > Mechanical Science and Technology for Aerospace Engineering > 2024 > 43(7): 1199-1206

CHEN Hongchao, MA Jun, WANG Xiaodong, HU Kai. Fluid-structure Interaction Modeling and Vibration Characteristics of Check Valve in High-pressure Diaphragm Pump[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(7): 1199-1206. doi: 10.13433/j.cnki.1003-8728.20230029

Citation:

CHEN Hongchao, MA Jun, WANG Xiaodong, HU Kai. Fluid-structure Interaction Modeling and Vibration Characteristics of Check Valve in High-pressure Diaphragm Pump[J]. Mechanical Science and Technology for Aerospace Engineering, 2024, 43(7): 1199-1206. doi: 10.13433/j.cnki.1003-8728.20230029

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Fluid-structure Interaction Modeling and Vibration Characteristics of Check Valve in High-pressure Diaphragm Pump

doi: 10.13433/j.cnki.1003-8728.20230029

CHEN Hongchao^1
,,
MA Jun^{1, 2
,
,},
WANG Xiaodong^{1, 2},
HU Kai¹

1.
School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China
2.
Yunnan Provincial Key Laboratory of Artificial Intelligence, Kunming University of Science and Technology, Kunming 650500, China

Received Date: 2022-04-26
Publish Date: 2024-07-25

Abstract

Abstract

Aiming at the root causes of forced vibration and flow-induced vibration problems during the opening process of the check valve, a fluid-structure interaction simulation model with different opening degrees of 5%, 15%, 30%, 50%, 75% and 100% was constructed. The characteristics of the fluid and solid fields and the flow-exciting force exerted by the fluid on the valve spool were numerically analyzed, and the pressure cloud map of the flow field, the velocity vector cloud map, the peak frequency of the flow-induced vibration force, and mode shapes and natural frequencies of the valve core at each opening degree were obtained. The results show that: during the opening process of the check valve, there is a large pressure difference on both sides of the valve core, and the deformation area is mainly concentrated in the rubber pad. When the high-speed fluid in the valve cavity contacts the low-speed fluid, a vortex is formed by shearing, and the flow vortex changes periodically. The flow-exciting force generated by the vortex causes the spool vibration, and the peak frequency distribution of the flow-exciting force pulsation on the spool gradually increases and fluctuates more.
- check valve,
- fluid-structure interaction,
- flow field characteristics,
- natural frequency,
- vibration characteristics

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References(18)

References

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