6Oro J M F,Ballesteros Tajadura R,Marigorta E B.et al. Turbulence and secondary flows in an axial flow fan with variable pitch blades[J].Journal ot Fluids Engineering, 2008,130(4):041101(11 pages).
7Myung H J ,Back J H. Mean velocity characteristics behind a forward-swept axial flow fan[J]. JSME International Journal. Series B, 1999 ,12(3) :476 -488.
8Vad J, Bencze F, Corsini A, et al. Non-free vortex flow effects in an axial flow rotor[J].Mechanical Engineering, 2001,15(2):201- 216.
9Nφrtoft S D. Thompson M C,Nφrkaer S J. Toward im proved rotor only axial fans:ParT M--Design optimization for maximum efficiency[J].Journal of Fluids Engineering, 2000,122 :324- 329.
10Lakshminarayana B. Zaccaria M. Marathe B. The structure of tip clearance flow in axial flow compressors[J]. ASME Journal of Turbomachinery,1995.117(3) :336 -347.