1305 Finite Element Method using Lagrangian Nodes for Fluid Flows with Moving Boundaries

2011 ◽  
Vol 2011.86 (0) ◽  
pp. _13-5_
Author(s):  
Shintaro Matsuoka ◽  
Takeshi Omori ◽  
Takeo Kajishima
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fluid Flows ◽  
Moving Boundaries ◽  
Element Method

A Lattice Boltzmann-Immersed Boundary-Finite Element Method for Nonlinear Fluid–Solid Interaction Simulation with Moving Objects

2018 ◽  
Vol 15 (07) ◽  
pp. 1850063 ◽  
Author(s):  
Chunlin Gong ◽  
Zhe Fang ◽  
Gang Chen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Lattice Boltzmann ◽  
Moving Objects ◽  
Moving Boundaries ◽  
Immersed Boundary ◽  
Nonlinear Fem ◽  
Ib Method ◽  
Nonlinear Fluid ◽  
Element Method

A nonlinear finite element method (FEM) was introduced into the immersed boundary (IB) — lattice Boltzmann method (LBM) framework to simulate the nonlinear fluid–solid interactions for moving deformable objects in incompressible fluid flow. The fluid motion is obtained by solving the discrete lattice Boltzmann equation, the moving boundaries of the solids are handled by the IB method, and the nonlinear dynamics of the deforming/moving objects are calculated by nonlinear FEM solvers in which the structural nodes are also set as Lagrangian markers to track the moving boundaries of the structures in IB method. The simulation results indicate that the proposed IB-LBM-FEM simulation framework not only satisfies the nonslip boundary condition well at the boundary points, but also has better accuracy for capturing nonlinearity because of its mature nonlinear FEM solver.

Sign in / Sign up

Export Citation Format

Share Document