Study on Droplets Impacting on Orifice Plates With Different Wettabilities Based on the Lattice Boltzmann Method

LIANG Jia; GAO Ming; CHEN Lu; WANG Dongmin; WANG Zhiyun; ZHANG Lixin

doi:10.21656/1000-0887.420076

Volume 43 Issue 1

Jan. 2022

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Article Navigation > Applied Mathematics and Mechanics > 2022 > 43(1): 63-76

LIANG Jia, GAO Ming, CHEN Lu, WANG Dongmin, WANG Zhiyun, ZHANG Lixin. Study on Droplets Impacting on Orifice Plates With Different Wettabilities Based on the Lattice Boltzmann Method[J]. Applied Mathematics and Mechanics, 2022, 43(1): 63-76. doi: 10.21656/1000-0887.420076

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Study on Droplets Impacting on Orifice Plates With Different Wettabilities Based on the Lattice Boltzmann Method

doi: 10.21656/1000-0887.420076

Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, P.R.China

Received Date: 2021-03-22
Accepted Date: 2021-11-30
Rev Recd Date: 2021-05-07

Available Online: 2021-12-06

Publish Date: 2022-01-01

Abstract

Abstract

Based on the lattice Boltzmann method, the numerical simulation of droplet impacting on orifice plates with different wettabilities was carried out. The effects of the Weber number (We), the wettability of the orifice surface and the orifice size on different states of droplets passing through orifice plates during impacts were studied. The numerical simulation results show that, different phenomena will occur in the processes of droplets impacting on the orifice plates. If the orifice plate is hydrophilic, the droplet will not detach from the orifice plate surface, but adhere to the lower surface of the orifice plate for a relatively low We number, and then the droplet will rise for a certain distance in the orifice channel under the action of capillarity, forming the liquid plugging phenomenon. For relatively high We numbers, droplets will pass through the orifice plates and rupture will occur. If the orifice plate is hydrophobic, the droplet will not pass through the orifice plate and migrate to the lower surface for a relatively low We number, and will finally stabilize in the orifice channel. For higher We numbers, droplets will pass through the orifice plates, and then break up, leaving droplet remains on the surfaces of the orifice plates. For various orifice sizes, the droplet will be more difficult to pass through the plate for a smaller orifice size or a lager orifice plate thickness.
- lattice Boltzmann method,
- droplet impact,
- orifice plate,
- hydrophilic surface and hydrophobic surface

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References(39)

References

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