Curved boundaries in multi-layer Shallow Water Lattice Boltzmann Methods: bounce back versus immersed boundary

2016 ◽  
Vol 16 ◽  
pp. 16-28 ◽  
Author(s):  
P. Prestininzi ◽  
V. Lombardi ◽  
M. La Rocca
Keyword(s):  
Shallow Water ◽  
Lattice Boltzmann ◽  
Immersed Boundary ◽  
Curved Boundaries ◽  
Lattice Boltzmann Methods ◽  
Water Lattice ◽  
Bounce Back

Simulation of Fluid–Structure Interaction Problems with Thin Elastic Plate via the Coupling of Finite Element and Lattice Boltzmann Methods

2020 ◽  
Vol 17 (10) ◽  
pp. 2050013
Author(s):  
Fei Jiang ◽  
Kangping Liao ◽  
Kazuki Matsumura ◽  
Junji Ohgi ◽  
Xian Chen
Keyword(s):  
Finite Element ◽  
Lattice Boltzmann ◽  
Fluid Structure Interaction ◽  
Immersed Boundary ◽  
Thin Elastic Plate ◽  
Computational Accuracy ◽  
Fe Method ◽  
Fluid Structure ◽  
Lattice Boltzmann Methods ◽  
Structure Interaction

A numerical framework is proposed to couple the finite element (FE) and lattice Boltzmann methods (LBM) for simulating fluid–structure interaction (FSI) problems. The LBM is used as an efficient method for solving the weakly-compressible fluid flows. The corotational FE method for beam elements is used to solve the thin plate deformation. The two methods are coupled via a direct-forcing immersed boundary (IB) method with a sub-iteration scheme. A virtual structure method has been developed to improve the computational accuracy. Validations of the proposed coupling method have been carried out by testing a vortex-induced vibration problem. The numerical results are in good agreement with [Li and Favier (2017), “A non-staggered coupling of finite element and lattice Boltzmann methods via an immersed boundary scheme for fluid-structure interaction,” Comput. Fluids 143, 90–102]. The proposed method does not require heavy linear algebra calculation, which is suitable for parallel computation.

AN ELASTIC-COLLISION SCHEME FOR LATTICE BOLTZMANN METHODS

2001 ◽  
Vol 12 (03) ◽  
pp. 387-401 ◽  
Author(s):  
J. G. ZHOU
Keyword(s):  
Experimental Data ◽  
Lattice Boltzmann ◽  
Elastic Collision ◽  
Complex Geometries ◽  
Slip Boundary Conditions ◽  
Lattice Boltzmann Methods ◽  
Slip Boundary ◽  
Arbitrary Complex ◽  
Bounce Back ◽  
Good Agreement

An elastic-collision scheme is developed to achieve slip and semi-slip boundary conditions for lattice Boltzmann methods. Like the bounce-back scheme, the proposed scheme is efficient, robust and generally suitable for flows in arbitrary complex geometries. It involves an equivalent level of computation effort to the bounce-back scheme. The new scheme is verified by predicting wind-driven circulating flows in a dish-shaped basin and a flow in a strongly bent channel, showing good agreement with analytical solutions and experimental data. The capability of the scheme for simulating flows through multiple bodies has also been demonstrated.

Solution of Ion Channel Flow Using Immersed Boundary–Lattice Boltzmann Methods

2020 ◽  
Vol 27 (7) ◽  
pp. 1144-1156 ◽  
Author(s):  
Kumar Saurabh ◽  
Maxim Solovchuk ◽  
Tony Wen Hann Sheu
Keyword(s):  
Ion Channel ◽  
Channel Flow ◽  
Lattice Boltzmann ◽  
Immersed Boundary ◽  
Lattice Boltzmann Methods
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