M-J. Huang and C-J. Huang and L-C. Chen
A Further Improvement on the Resurrected CoreSpreading Vortex Method
1353 - 1358
2011
5
7
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/2200
https://publications.waset.org/vol/55
World Academy of Science, Engineering and Technology
In a previously developed fast vortex method, the
diffusion of the vortex sheet induced at the solid wall by the noslip
boundary conditions was modeled according to the approximation
solution of Koumoutsakos and converted into discrete blobs in the
vicinity of the wall. This scheme had been successfully applied to a
simulation of the flow induced with an impulsively initiated circular
cylinder. In this work, further modifications on this vortex method are
attempted, including replacing the approximation solution by the
boundaryelementmethod solution, incorporating a new algorithm for
handling the overweak vortex blobs, and diffusing the vortex sheet
circulation in a new way suitable for highcurvature solid bodies. The
accuracy is thus largely improved. The predictions of lift and drag
coefficients for a uniform flow past a NASA airfoil agree well with the
existing literature.
Open Science Index 55, 2011