TY - JOUR
T1 - A Robust Immersed Boundary-Lattice Boltzmann Method for Simulation of Fluid-Structure Interaction Problems
AU - Jie Wu, Jing Wu, Jiapu Zhan, Ning Zhao & Tongguang Wang
JO - Communications in Computational Physics
VL - 1
SP - 156
EP - 178
PY - 2018
DA - 2018/04
SN - 20
DO - http://doi.org/10.4208/cicp.180115.210715a
UR - https://global-sci.org/intro/article_detail/cicp/11148.html
KW - 
AB - <p style="text-align: justify;">A robust immersed boundary-lattice Boltzmann method (IB-LBM) is proposed
to simulate fluid-structure interaction (FSI) problems in this work. Compared
with the conventional IB-LBM, the current method employs the fractional step technique
to solve the lattice Boltzmann equation (LBE) with a forcing term. Consequently,
the non-physical oscillation of body force calculation, which is frequently encountered
in the traditional IB-LBM, is suppressed greatly. It is of importance for the simulation
of FSI problems. In the meanwhile, the no-slip boundary condition is strictly satisfied
by using the velocity correction scheme. Moreover, based on the relationship between
the velocity correction and forcing term, the boundary force can be calculated accurately
and easily. A few test cases are first performed to validate the current method.
Subsequently, a series of FSI problems, including the vortex-induced vibration of a circular
cylinder, an elastic filament flapping in the wake of a fixed cylinder and sedimentation
of particles, are simulated. Based on the good agreement between the current
results and those in the literature, it is demonstrated that the proposed IB-LBM has the
capability to handle various FSI problems effectively.</p>