Unsteady Flow Computations and Noise Predictions on Rod-Airfoil Using Lattice Boltzmann Method

2009 ◽  
Author(s):  
Rajani Satti ◽  
Phoi-Tack Lew ◽  
Yanbing Li ◽  
Richard Shock ◽  
Swen Noelting
Keyword(s):  
Unsteady Flow ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Boltzmann Method

Unsteady Flow Analysis of a Multi-Element Airfoil Using Lattice Boltzmann Method

AIAA Journal ◽  
2012 ◽  
Vol 50 (9) ◽  
pp. 1805-1816 ◽  
Author(s):  
Rajani Satti ◽  
Yanbing Li ◽  
Richard Shock ◽  
Swen Noelting
Keyword(s):  
Unsteady Flow ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Flow Analysis ◽  
Boltzmann Method ◽  
Unsteady Flow Analysis

Lattice Boltzmann Method Used to Simulate an Unsteady Flow Around an Obstacle in Laminar Regime

2011 ◽  
Author(s):  
Wafik Abassi ◽  
Fethi Aloui ◽  
Sassi Ben Nasrallah ◽  
Jack Legrand
Keyword(s):  
Unsteady Flow ◽  
Lattice Boltzmann Method ◽  
Lattice Boltzmann ◽  
Numerical Study ◽  
Flow Behavior ◽  
Reynolds Numbers ◽  
Numerical Results ◽  
Laminar Regime ◽  
Boltzmann Method ◽  
3D Problem

This work deals with the application of the lattice Boltzmann method to simulate the unsteady laminar flow around a confined square obstacle. For this configuration, we can observe some regimes that fluid may occur during its flowing. We have determined numerically the flow behavior for linear and stable regime. The variable aspect of the flow observed depends on the Reynolds number. In this study, we determine the velocity fields for a various Reynolds numbers by resolving the Navier-Stokes equations using the Lattice Boltzmann Method with BGK schema. This method is a recent extension of the LB method which demonstrated its potential for describing incompressible flow around an obstacle. A numerical study of 2D and 3D problem around a square obstacle using the Lattice Boltzmann Method with BGK schema is presented for an unsteady flow in laminar regime. The flow behavior in a horizontal channel with a rectangular cross-section, where a squared obstacle is placed in the middle, is discussed. In the 2D simulation, the obtained numerical results show a good agreement with experimental results [18]. Then we extend the ability of this method to solve the 3D problem. Numerical results behind the obstacle, obtained for various Reynolds numbers, are also analyzed and discussed.

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