Journal
PHYSICS OF FLUIDS
Volume 33, Issue 7, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0058045
Keywords
-
Categories
Funding
- National Natural Science Foundation of China [21776150, 92034303]
Ask authors/readers for more resources
This article introduces a new outflow boundary condition for the color gradient model in the multiphase lattice Boltzmann method, based on the phase ratio equation and utilizing the Zou-He boundary condition. Experimental results demonstrate that this new boundary condition can effectively enhance pressure stability and mass conservation characteristics.
This article proposes a new outflow boundary condition for the color gradient model in the multiphase lattice Boltzmann method. The boundary condition is based on the phase ratio equation and made use of the Zou-He boundary condition in single-phase flow. The boundary condition is provided in two-dimension-nine-velocity (D2Q9) and three-dimension-twenty-seven-velocity (D3Q27) schemes, for which an extension of the Zou-He boundary condition to D3Q27 is also derived and its correctness verified. Application cases, including two-phase parallel flows, droplet flows, T-junction flows, three-phase Janus droplet flows in two-dimensional (2D), and three-dimensional (3D) spaces, demonstrate the effectiveness of this new boundary condition, and the performance of a test case shows its improved pressure stability and mass conservation characteristics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available