J4 ›› 2009, Vol. 47 ›› Issue (05): 928-932.
Previous Articles Next Articles
ZHENG Hai-Cheng, SHI Wei-Beng, ZHANG Ge-Jin, DING Li-Xia
Received:
Online:
Published:
Contact:
Abstract:
Lattice Boltzmann method was used for the numerical simulation of a flow past an elliptic cylinder. The drag of a flow around elliptic cylinders with various shapes was investigated. Firstly, the classical flow past a circular cylinder was simulated numerically. The drag coffecient of our simulation is consistent with those of other numerically results. Secondly, the flow past an elliptic cylinder with different shapes was computed by fixing the vertical semi axis length and varying the horizontal semi axis length. The numerical interpolation was used for boundary treatment, and momentum exchange method was employed to evaluate the force on the boundary. The streamlines, vorticity contours and drag were obtained for the flows past the cylinders with different shapes. Finally, we explained the drag mechanism by analyzing the variation of streamlines and vorticity contours.
Key words: lattice Boltzmann, drag reduction, drag coefficient
CLC Number:
ZHENG Hai-Cheng, SHI Wei-Beng, ZHANG Ge-Jin, DING Li-Xia. Lattice Boltzmann Simulation for Drag ofFlow Past Elliptic Cylinders[J].J4, 2009, 47(05): 928-932.
0 / / Recommend
Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks
URL: http://xuebao.jlu.edu.cn/lxb/EN/
http://xuebao.jlu.edu.cn/lxb/EN/Y2009/V47/I05/928
Cited