| Vol. - No. | Vol.1 - No.2 |
|---|---|
| Date | Jun., 2012 |
| Title | Analysis of Airflow Pattern and Particle Dispersion in Enclosed Environment Using Traditional CFD and Lattice Boltzmann Methods |
| Author | Tomo Inoguchi and Kazuhide Ito+ |
| Institutions | Interdisciplinary Graduate School of Engineering Science, Kyushu University, Fukuoka, 816-8580, Japan |
| Abstract |
The indoor environments in high-rise buildings are generally well enclosed by defined boundary conditions. Here, a numerical simulation method based on the Lattice Boltzmann method (LBM), which aims to model and simulate the turbulent flow accurately in an enclosed environment, and its comparison with traditional computational fluid dynamics (CFD) results, are presented in this paper. CFD has become a powerful tool for predicting and evaluating enclosed airflows with the rapid advance in computer capacity and speed, and various types of CFD turbulence modeling and its application and validation have been reported. The LBM is a relatively new method; it involves solving of the discrete Boltzmann equation to simulate the fluid flow with a collision model instead of solving Navier-Stokes equations. In this study, the LBM-based scheme of flow pattern and particle dispersion analyses are validated using the benchmark test case of two- and three-dimensional and isothermal conditions (IEA/Annex 20 case); the prediction accuracy and advantages are also discussed by comparison with the results of CFD. |
| Keyword |
Lattice Boltzmann method, Computational fluid dynamics, Enclosed environment, Particle dispersion, Benchmark test |
| PP. | PP.87~97 |
| Paper File |
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