Eventos Anais de eventos
CREEM2025
CREEM 2025 - XXXI Congresso Nacional de Estudantes de Engenharia Mecânica Congresso Nacional de Estudantes de Engenharia Mecânica
O MÉTODO SIMPLIFICADO E ALTAMENTE ESTÁVEL DE BOLTZMANN EM REDE EM ESCOAMENTOS TURBULENTOS
Submission Author:
Alexandre Nunes Reinaldi , São Paulo , Brazil
Co-Authors:
Alexandre Nunes Reinaldi, Luben Cabezas Gómez
Presenter: Alexandre Nunes Reinaldi
doi://10.26678/ABCM.CREEM2025.CRE2025-0035
Abstract
The Lattice Boltzmann Method (LBM) has advantages in simulating the physical behavior of flows when compared to traditional methodologies due to its simplicity of programming and ease of simulating different phenomena. The Simplified and Highly Stable Lattice Boltzmann Method (SHSLBM) is a variant of this methodology and is designed to overcome the usual limitations of the conventional method, such as numerical stability and the application of boundary conditions. These advantages are obtained due to the numerical adaptation of the distribution functions to evolve directly the macroscopic properties of the fluid, guaranteeing better performance in the analysis of turbulent flows, which are common in engineering. In this way, the current research employed simulations with LBM and SHSLBM to solve the classic Lid-driven Cavity problem at different Reynolds numbers in order to compare these methodologies in terms of efficiency, computational memory, numerical stability and accuracy of results. It is concluded that, for laminar flows, the low computational memory cost of SHSLBM does not outweigh its low efficiency, and LBM is preferred. However, for turbulent flows, the SHSLBM performs better than the LBM in all of the above aspects, making the use of this new approach preferable.
Keywords
Simplified and Highly Stable Lattice Boltzmann Method, Lattice Boltzmann method, turbulent, transport phenomena, Single-Phase Flows
