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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
PARTIALLY SATURATED METHOD FOR TWO-DIMENSIONAL FLUID FLOW PAST OBSTACLES
Submission Author:
Evani Porto , PR
Co-Authors:
Evani Porto, Stephan Hennings Och, Paulo Philippi
Presenter: Evani Porto
doi://10.26678/ABCM.ENCIT2020.CIT20-0232
Abstract
In several engineering applications such as automobiles aerodynamics, drag and lift coefficients are important to be determined. One method to preview the fluid flow effects is the use of computational simulation methods. The Lattice-Boltzmann Method (LBM) is one of them. It has been researched and used as a theoretical fluid mechanics simulation method. Based on widely accepted mesoscopic theories the LBM model is considered suitable to simulate physical phenomena in several areas, such as compressible and incompressible flows, micro fluid dynamics, porous media flow, hemodynamics and turbulence. In this paper we aim to investigate the application of the LBM with a variation of the standard method by the application of the Partially Saturated Method (PSM), to simulate an incompressible single phase fluid flow past obstacles in a two-dimensional model using a D2Q9 scheme (two dimensions and nine velocity vectors). The simulation is performed with the Reynolds number varying from 10 to 100 to illustrate that an obstacle may be subject to fluctuations in drag and lift forces as the magnitude of the Reynolds number increases. Results regarding drag forces and lift effects are compared with studies available in the literature and a good agreement were found in comparison with experimental and simulated data.
Keywords
LBM, FLOW PAST OBSTACLES, D2Q9, Lattice Boltzmann method
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