Application of a coupled Lattice Boltzmann and Immersed Boundary Method for solving conjugated heat transfer problems

7th European Thermal-Sciences Conference

Kasparek, A.^1 ; Lapka, P.^1 ; Furmaski, P.^1

Institute of Heat Engineering, Warsaw University of Technology, 21/25 Nowowiejska St, Warsaw

00-665, Poland^1

关键词: Computational domains;    Conjugated heat transfer;    Fluid flow problems;    Immersed boundary methods;    Laminar natural convection;    Lattice boltzmann;    Lattice Boltzmann method;    Numerical simulators;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/745/3/032024/pdf
DOI  :  10.1088/1742-6596/745/3/032024

来源: IOP

【 摘 要 】

The paper presents development of a coupled Lattice Boltzmann and Immersed Boundary Method for solving conjugated heat and fluid flow problems in a domain with complex internal boundaries. The Lattice Boltzmann Method was applied to efficiently solve both Navier-Stokes and energy equations, while the Immersed Boundary Method accounted for presence of objects of complex shape inside the computational domain. The presented approach allowed to use fixed Cartesian grid on which complex internal boundaries were imposed. Several conjugated heat transfer and fluid flow problems in a domain with complex internal boundaries, i.e., laminar natural convection in a square cavity without and with internal cylinder and isothermal flow past stationary cylinder were analyzed. The results obtained were compared with the results presented in the literature successfully verifying the developed numerical simulator.