Validation of a dynamically adaptive lattice Boltzmann method for 2D thermal convection simulations

Deiterding, Ralf, Feldhusen, Kai and Wagner, Claus (2016) Validation of a dynamically adaptive lattice Boltzmann method for 2D thermal convection simulations. 2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI), Sliema, Malta. 17 Aug 2015. pp. 199-206 . (doi:10.1109/MCSI.2015.60).

Record type: Conference or Workshop Item (Paper)

Abstract

Utilizing the Boussinesq approximation, a double-population thermal lattice Boltzmann method (LBM) for forced and natural convection in two space dimensions is developed and validated. A block-structured dynamic adaptive mesh refinement procedure tailored for LBM is applied to enable computationally efficient simulations of high Rayleigh number configurations which are characterized by a large scale disparity in boundary layers and free stream flow. As test cases, the analytically accessible problem of a two-dimensional (2D) forced convection flow through two porous plates and the non-Cartesian configuration of a heated rotating cylinder are considered. The effectiveness of the overall approach is demonstrated for the 2D natural convection benchmark of a cavity with differentially heated walls at Rayleigh numbers from 10^3 up to 10^8.

Text

paper_2.10.pdf - Accepted Manuscript

Download (890kB)

More information

Published date: April 2016

Venue - Dates: 2015 Second International Conference on Mathematics and Computers in Sciences and in Industry (MCSI), Sliema, Malta, 2015-08-17 - 2015-08-17

Organisations: Aerodynamics & Flight Mechanics Group