TY - GEN
T1 - Numerical simulation with Lattice Boltzmann Method (LBM) in the curved square duct
AU - Liao, Quan
AU - Jen, Tien Chien
AU - Chen, Qinghua
AU - Cui, Wenzhi
AU - Li, Longjian
PY - 2006
Y1 - 2006
N2 - In this paper, the 3DQ19 model of Lattice Boltzmann Method (LBM) was employed to simulate the flow in the curved square duct with curvature ratio (0.2-2.0) and Dean Number (0 - 250). The so-called Dean instability in the curved square duct is fully investigated and a stability diagram is obtained in the domain of curvature ratio and Dean number. It is found that for the square duct with high curvature ratio the onset of transition from single vortex pair to double vortex pairs depends on the Dean number and curvature ratio, while at the small curvature the onset can be characterized by the Dean number alone. This trend is consistent with the conventional Computational Fluid Dynamic (CFD) and experimental results, and the differences between those are very small. For the friction coefficient, which is a function of Dean number, it is found that the numerical results are in good agreement with the available experimental data and conventional CFD results within the given parameters in this project.
AB - In this paper, the 3DQ19 model of Lattice Boltzmann Method (LBM) was employed to simulate the flow in the curved square duct with curvature ratio (0.2-2.0) and Dean Number (0 - 250). The so-called Dean instability in the curved square duct is fully investigated and a stability diagram is obtained in the domain of curvature ratio and Dean number. It is found that for the square duct with high curvature ratio the onset of transition from single vortex pair to double vortex pairs depends on the Dean number and curvature ratio, while at the small curvature the onset can be characterized by the Dean number alone. This trend is consistent with the conventional Computational Fluid Dynamic (CFD) and experimental results, and the differences between those are very small. For the friction coefficient, which is a function of Dean number, it is found that the numerical results are in good agreement with the available experimental data and conventional CFD results within the given parameters in this project.
UR - http://www.scopus.com/inward/record.url?scp=85196532465&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85196532465
SN - 0791837904
SN - 9780791837900
T3 - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
BT - Proceedings of 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006 - Heat Transfer
PB - American Society of Mechanical Engineers (ASME)
T2 - 2006 ASME International Mechanical Engineering Congress and Exposition, IMECE2006
Y2 - 5 November 2006 through 10 November 2006
ER -