An Improved Momentum-exchanged Immersed Boundary-based Lattice Boltzmann Method for Incompressible Viscous Thermal Flows. (2015)

• Record Type: Journal Article
• Authors: Chen, Mu-Feng; Niu, Xiao-Dong; Ma, Yi-Ren; Yamaguchi, H.; Iwamoto, Y.
• Is Part Of: Procedia engineering. Volume 126(2015)
• Page Start: 691
• Page End: 695
• Publication Date: 2015
• Subjects: improved MEIB-LBM -- heat transfer -- moving boundary; Engineering -- Congresses; Engineering -- Periodicals; Engineering; Conference proceedings; Periodicals; 620.005
• DOI: 10.1016/j.proeng.2015.11.271
• Languages: English
• ISSNs: 1877-7058

Abstract

Abstract: An improved momentum-exchanged immersed boundary-based lattice Boltzmann method (MEIB-LBM) is proposed for incompressible viscous flows in this paper. In present work, we come back to the intrinsic feature of LBM, which uses the density distribution function as a dependent variable to evolve the flow field, and use the non-equilibrium density distribution function correction at the neighbour Euler mesh points to satisfy the non-slip boundary condition on the immersed boundary. The improvements for the original MEIB-LBM are that the intrinsic feature of LBM is kept and the flow penetration is removed. Examples, including force convection over a stationary heated circular cylinder for heat flux condition, and natural convection with a buoyant circle particle in viscous fluid, are provided to validate the present method.