Navier-Stokes Simulations of Blade-Vortex Interaction Using High-Order-Accurate Upwind Schemes

1993 ◽  
pp. 417-430 ◽  
Author(s):  
Man Mohan Rai
Keyword(s):  
High Order ◽  
Navier Stokes ◽  
Vortex Interaction ◽  
Upwind Schemes ◽  
Blade Vortex Interaction

An Euler Code Calculation of Blade-Vortex Interaction Noise

1987 ◽  
Vol 109 (1) ◽  
pp. 29-36 ◽  
Author(s):  
J. C. Hardin ◽  
S. L. Lamkin
Keyword(s):  
Sound Production ◽  
Vortex Motion ◽  
Low Frequency ◽  
Measured Data ◽  
Navier Stokes ◽  
Vortex Interaction ◽  
Kutta Condition ◽  
Noise Radiation ◽  
Blade Vortex Interaction ◽  
Noise Production

An Euler code has been developed for calculation of noise radiation due to the interaction of a distributed vortex with a Joukowski airfoil. The time-dependent incompressible flow field is first determined and then integrated to yield the resulting sound production through use of the elegant low-frequency Green’s function approach. This code has several interesting numerical features involved in the vortex motion and in continuous satisfaction of the Kutta condition. In addition, it removes the limitations on Reynolds number and is much more efficient than an earlier Navier-Stokes code. Results indicate that the noise production is due to the deceleration and subsequent acceleration of the vortex as it approaches and passes the airfoil. Predicted acoustic levels and frequencies agree with measured data although a precise comparison would require the strength, size, and position of the incoming vortex to be known.

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
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