The 2-Phase Lattice Boltzmann Simulation of Flow-Following Bubble Movement Through Microchannels in Orifice Plates

DING Hongyi; WANG Zhiyun; ZHAO Jingshuai; WANG Nan; LOU Qin

doi:10.21656/1000-0887.440099

Volume 45 Issue 1

Jan. 2024

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Article Navigation > Applied Mathematics and Mechanics > 2024 > 45(1): 97-109

DING Hongyi, WANG Zhiyun, ZHAO Jingshuai, WANG Nan, LOU Qin. The 2-Phase Lattice Boltzmann Simulation of Flow-Following Bubble Movement Through Microchannels in Orifice Plates[J]. Applied Mathematics and Mechanics, 2024, 45(1): 97-109. doi: 10.21656/1000-0887.440099

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The 2-Phase Lattice Boltzmann Simulation of Flow-Following Bubble Movement Through Microchannels in Orifice Plates

doi: 10.21656/1000-0887.440099

School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P.R.China

Received Date: 2023-04-10
Rev Recd Date: 2023-07-24
Publish Date: 2024-01-01

Abstract

Abstract

The 2-phase flow systems with bubbles exist in various industrial processes and involve complex phase interface changes, but the bubble movement through orifice plates accompanied by liquid flow in channels has not been fully studied. The phase field lattice Boltzmann model has advantages in simulating complex interface, and is suitable for studying the movement of bubble 2-phase flow through microchannels in orifice plates, and analyzing the effects of factors such as the We number, the relative bubble size and the orifice surface wettability on the dynamic characteristics of bubbles. The numerical results show that, with the increase of the We number, the surface tension of the bubble would decrease, which makes the bubble more likely to be torn and its peak velocity decrease when it passes through the orifice structure. There are 2 critical diameter ratios in the studied parameter range, which divide the bubble movement into 3 forms through the orifice, and the critical diameter ratio decreases with the We number. In addition, with the increase of the contact angle, the adsorption capacity of gas on the surface of the orifice plate would improve, and the contact area between the bubble and the orifice plate surface would increase, which would cause the bubble mass passing through the orifice plate to decrease and the bubble speed passing through the orifice plate to increase.
- lattice Boltzmann method,
- bubble movement,
- orifice plate,
- 2-phase flow,
- wettability

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References(22)

References

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