TY - CHAP
T1 - Notice of Retraction
T2 - Vortex breakdown over delta wing and its induced turbulent flow
AU - Dang, Huixue
AU - Yang, Zhichun
PY - 2010
Y1 - 2010
N2 - Vortex breakdown over delta wing is simulated by solving Navier-Stokes equations. Iso-surfaces of total pressure and flow parameters along vortex core axis are employed to depict this phenomena. To have an insight into the turbulence characteristics induced by vortex breakdown, iso-surfaces of turbulent kinetic energy and turbulence dissipation rate are employed. The results indicated that, vortex breakdown location moves upstream with the increase of incidence angle. During vortex breakdown process, kinetic energy of leading edge vortex is transformed into kinetic energy of small vortices and turbulent kinetic energy. Turbulent kinetic energy of vortex breakdown wake is also fed by energy transformation from small vortices. At the same time, turbulent kinetic energy is dissipated by inner shear friction during the evolutions of leading edge vortex and vortex breakdown wake. The feeding and dissipation of kinetic energy together govern the dissipation process of vortex breakdown. Complex interferences include mutual-inductions inbetween small vortices and self-induction of single vortex, causing stretching, compression, wandering and distortion of these vortices, and this is the reason for highly unsteady flow in vortex breakdown wake.
AB - Vortex breakdown over delta wing is simulated by solving Navier-Stokes equations. Iso-surfaces of total pressure and flow parameters along vortex core axis are employed to depict this phenomena. To have an insight into the turbulence characteristics induced by vortex breakdown, iso-surfaces of turbulent kinetic energy and turbulence dissipation rate are employed. The results indicated that, vortex breakdown location moves upstream with the increase of incidence angle. During vortex breakdown process, kinetic energy of leading edge vortex is transformed into kinetic energy of small vortices and turbulent kinetic energy. Turbulent kinetic energy of vortex breakdown wake is also fed by energy transformation from small vortices. At the same time, turbulent kinetic energy is dissipated by inner shear friction during the evolutions of leading edge vortex and vortex breakdown wake. The feeding and dissipation of kinetic energy together govern the dissipation process of vortex breakdown. Complex interferences include mutual-inductions inbetween small vortices and self-induction of single vortex, causing stretching, compression, wandering and distortion of these vortices, and this is the reason for highly unsteady flow in vortex breakdown wake.
KW - Delta wing
KW - Induction
KW - Turbulent kinetic energy
KW - Unsteady
KW - Vortex breakdown
UR - http://www.scopus.com/inward/record.url?scp=77958037005&partnerID=8YFLogxK
U2 - 10.1109/ICCET.2010.5486142
DO - 10.1109/ICCET.2010.5486142
M3 - 章节
AN - SCOPUS:77958037005
SN - 9781424463503
T3 - ICCET 2010 - 2010 International Conference on Computer Engineering and Technology, Proceedings
SP - V5473-V5477
BT - ICCET 2010 - 2010 International Conference on Computer Engineering and Technology, Proceedings
PB - IEEE Computer Society
ER -