Research on the contact time of a bouncing microdroplet with lattice Boltzmann method

2021 ◽  
Vol 33 (4) ◽  
pp. 042011
Author(s):  
Yaolin Tai ◽  
Yang Zhao ◽  
Xinyu Guo ◽  
Linan Li ◽  
Shibin Wang ◽  
...  
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Contact Time ◽  
Boltzmann Method

scholarly journals Contact Time of Double-Droplet Impacting Superhydrophobic Surfaces with Different Macrotextures

Processes ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 896
Author(s):  
Dian-Ji Lin ◽  
Ling-Zhe Zhang ◽  
Meng-Chao Yi ◽  
Xin Wang ◽  
Shu-Rong Gao ◽  
...  
Keyword(s):  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Contact Time ◽  
Superhydrophobic Surface ◽  
Vertical Wall ◽  
Spray Cooling ◽  
Superhydrophobic Surfaces ◽  
Geometrical Parameters ◽  
Boltzmann Method ◽  
Center Distance

The contact time of droplets on superhydrophobic surfaces is an especially important parameter in many applications, such as self-cleaning, anti-icing, and spray cooling. In this study, we investigate the contact time of two identical droplets simultaneously impacting superhydrophobic surfaces decorated with three different macrotextures, i.e., bathtub-like groove (S1), vertical wall (S2), and rectangular ridge (S3), via lattice Boltzmann method (LBM) simulations. We explore influences of the geometrical parameters of the macrotextures, as well as the center-to-center distance of the two droplets, on the contact time. We found a new rebounding regime with significantly reduced contact times. We demonstrate that, as compared with impacting a smooth superhydrophobic surface, the contact time can be decreased by 41% for macrotexture S1 because of the asymmetric spreading and retraction of droplets motivated by the macrotexture. We also demonstrate that the new regime depends on the center-to-center distance and geometrical parameters of the macrotextures.

INVESTIGATING THE PERMEABILITY–POROSITY RELATION OF PERCOLATION-BASED POROUS MEDIA USING THE LATTICE BOLTZMANN METHOD

2017 ◽  
Vol 20 (10) ◽  
pp. 899-919 ◽  
Author(s):  
Sajjad Foroughi ◽  
Mohsen Masihi ◽  
Saeid Jamshidi ◽  
Mahmoud Reza Pishvaie
Keyword(s):  
Porous Media ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Boltzmann Method
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