Improvement of airfoil trailing edge bluntness noise model
نویسندگان
چکیده
منابع مشابه
LES tests on airfoil trailing edge serration
In the present study, a large number of acoustic simulations are carried out for a low noise airfoil with different Trailing Edge Serrations (TES). The Ffowcs Williams-Hawkings (FWH) acoustic analogy is used for noise prediction at trailing edge. The acoustic solver is running on the platform of our in-house incompressible flow solver EllipSys3D. The flow solution is first obtained from the Lar...
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Two deterministic incompressible flow solvers are coupled with a non-intrusive stochastic collocation method to propagate several aerodynamic uncertainties encountered in a standard trailing-edge noise experiment of a low-speed Controlled-Diffusion (CD) airfoil to predict the far-field noise. Reynolds-Averaged Navier-Stokes (RANS) and Large-Eddy Simulations (LES) are applied to the same restric...
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Unsteady flow models of wings and airfoils have been studied to understand the aerodynamic performance of natural flyers and provide improved maneuverability for micro aerial vehicles (MAVs). Vortex methods have been extensively applied to reduce the dimensionality of these aerodynamic models, based on the proper estimation of the distribution and evolution of the vortices in the wake. In such ...
متن کاملStatistical Estimation of Turbulent Trailing Edge Noise
A new computational aeroacoustic model suitable for the prediction of turbulent airfoil trailing edge noise is presented. The method (known as the RANS based Statistical Noise Model or RSNM) combines numerically generated, mean turbulence information with a Green’s function for a semi-infinite half-plane to generate a far-field acoustic auto-spectrum. As a preliminary application of the method,...
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ژورنال
عنوان ژورنال: Advances in Mechanical Engineering
سال: 2016
ISSN: 1687-8140,1687-8140
DOI: 10.1177/1687814016629343