The paper is devoted to show the capabilities of a set of CFD numerical tools to evaluate the noise emitted by the push-propelled Piaggio P180 aircraft and to pursue its own acoustical optimization. The aim is achieved by coupling a RANSE code (aerodynamic solution around the whole aircraft and, in particular, computation of the inflow yelocity impinging onto the propeller disk) to a BIEM solver (determination of the propeller airload distribution), and by using a typical acoustic-analogy approach to estimate the noise level in the far field. Based on the interesting features of the generating noise mechanisms revealed by such a numerical facility, many different strategies aiming at an effective noise reduction are examined. Copyright © 2004 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
Evaluation of noise excess for pushing propeller aircraft by CFD aeroacoustic calculation
Di Mascio A.;
2004-01-01
Abstract
The paper is devoted to show the capabilities of a set of CFD numerical tools to evaluate the noise emitted by the push-propelled Piaggio P180 aircraft and to pursue its own acoustical optimization. The aim is achieved by coupling a RANSE code (aerodynamic solution around the whole aircraft and, in particular, computation of the inflow yelocity impinging onto the propeller disk) to a BIEM solver (determination of the propeller airload distribution), and by using a typical acoustic-analogy approach to estimate the noise level in the far field. Based on the interesting features of the generating noise mechanisms revealed by such a numerical facility, many different strategies aiming at an effective noise reduction are examined. Copyright © 2004 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.Pubblicazioni consigliate
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