A Bi-fluid Lattice Boltzmann Model for Water Flow in an Irrigation Channel

2006 ◽  
pp. 373-382 ◽  
Author(s):  
Olivier Marcou ◽  
Samira El Yacoubi ◽  
Bastien Chopard
Keyword(s):  
Water Flow ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Irrigation Channel ◽  
Boltzmann Model

scholarly journals MRT-Lattice Boltzmann Model for Multilayer Shallow Water Flow

Water ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1623 ◽  
Author(s):  
Kevin R. Tubbs ◽  
Frank T.-C. Tsai
Keyword(s):  
Shallow Water ◽  
Water Flow ◽  
Analytical Solutions ◽  
Lattice Boltzmann ◽  
Kinematic Viscosity ◽  
Numerical Solutions ◽  
Lattice Boltzmann Model ◽  
Processing Unit ◽  
Shallow Water Flow ◽  
Boltzmann Model

The objectives of this study are to introduce a multiple-relaxation-time (MRT) lattice Boltzmann model (LBM) to simulate multilayer shallow water flows and to introduce graphics processing unit (GPU) computing to accelerate the lattice Boltzmann model. Using multiple relaxation times in the lattice Boltzmann model has an advantage of handling very low kinematic viscosity without causing a stability problem in the shallow water equations. This study develops a multilayer MRT-LBM to solve the multilayer Saint-Venant equations to obtain horizontal flow velocities in various depths. In the multilayer MRT-LBM, vertical kinematic viscosity forcing is the key term to couple adjacent layers. We implemented the multilayer MRT-LBM to a GPU-based high-performance computing (HPC) architecture. The multilayer MRT-LBM was verified by analytical solutions for cases of wind-driven, density-driven, and combined circulations with non-uniform bathymetry. The results show good speedup and scalability for large problems. Numerical solutions compared well to the analytical solutions. The multilayer MRT-LBM is promising for simulating lateral and vertical distributions of the horizontal velocities in shallow water flow.

Hybrid lattice Boltzmann model for atmospheric flows under anelastic approximation

2021 ◽  
Vol 33 (3) ◽  
pp. 036607
Author(s):  
Y. Feng ◽  
J. Miranda-Fuentes ◽  
J. Jacob ◽  
P. Sagaut
Keyword(s):  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Atmospheric Flows ◽  
Boltzmann Model
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