Numerical Simulation of Blade-Vortex Interaction in Two-Dimensional Viscous Flow

1994 ◽  
Author(s):  
Bonian Dong ◽  
Yong-Tian Chew ◽  
Boo-Cheong Khoo ◽  
Dean T. Mook
Keyword(s):  
Numerical Simulation ◽  
Viscous Flow ◽  
Two Dimensional ◽  
Vortex Interaction ◽  
Blade Vortex Interaction

Novel method for calculating two-dimensional blade vortex interaction

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 909-912
Author(s):  
Ronald J. Epstein ◽  
John A. Rule ◽  
Donald B. Bliss
Keyword(s):  
Two Dimensional ◽  
Vortex Interaction ◽  
Blade Vortex Interaction ◽  
Novel Method

A New Look at Sound Generation by Blade/Vortex Interaction

1985 ◽  
Vol 107 (2) ◽  
pp. 224-228 ◽  
Author(s):  
J. C. Hardin ◽  
J. P. Mason
Keyword(s):  
Low Frequency ◽  
Initial Position ◽  
Sound Pulse ◽  
Two Dimensional ◽  
Vortex Interaction ◽  
Dimensional Problem ◽  
Sound Generation ◽  
Blade Vortex Interaction ◽  
Vortex Velocity

As a preliminary attempt to understand the dynamics of blade/vortex interaction, the two-dimensional problem of a rectilinear vortex filament interacting with a Joukowski airfoil is analyzed in both the lifting and nonlifting cases. The vortex velocity components could be obtained analytically and integrated to determine the vortex trajectory. With this information, the aeroacoustic low-frequency Green’s function approach could then be employed to calculate the sound produced during the encounter. The results indicate that the vortex path deviates considerably from simple convection due to the presence of the airfoil and that a reasonably sharp sound pulse is radiated during the interaction whose fundamental frequency is critically dependent upon whether the vortex passes above or below the airfoil. Determination of this gross parameter of the interaction is shown to be highly nonlinearly dependent upon airfoil circulation, vortex circulation, and initial position.

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