HELIX-I, an essentially standard full-potential CFD helicopter rotor code, is unique in its use of the Clebisch kinematical flow description to specify a freely convecting wake and its capacity for predicting hover performance. A study is presently performed to assess the method's sensitivity to grids and solution-starting techniques. The effects of these parameters on thrust, power, load distribution, and wake geometry are ascertained and compared with an extensive rotor data base. The use of a fairly accurate starting solution yields no obvious advantage over the use of a novel starting method which employs a succession of diminishing artificial flows.
Experimental and computational studies of hovering rotor flows
AHS International Specialists'' Meeting on Rotorcraft Basic Research ; 1991 ; Atlanta, GA, United States
1991-01-01
Conference paper
No indication
English
Computational/Experimental Study of Hovering Rotor Tip Vortex Formation
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