Simulation of Isolated Propeller Noise Using Acoustic-Vortex Method

Abstract

The widespread development of unmanned aerial vehicles and light propeller-driven aircraft poses the task of reducing the community noise of such vehicles. To solve this problem, tools are needed to calculate the noise of such devices. The paper presents the results of the numerical simulation of the noise of an AV-2 propeller mounted on an AN-2 light propeller-driven aircraft. The authors use the acoustic-vortex method to solve the problem of aeroacoustic modeling of propeller noise in the presence of an incoming flow. The paper shows a good agreement of computed data with the in-flight experiment results and the calculation by the semi-empirical method. For the flight mode with an airspeed of 180 km/h, the deviation of the numerical simulation results from the experimental data does not exceed 2 dB.

Evaluation of the Audibility Boundaries of Multirotor Systems of Different Configurations

“…The modeling method is based on the theoretical approach of Blokhintsev, Landau, Crow and Artamonov. The basic equations of the acoustic-vortex method are presented in [6,7]. This method is implemented in the FlowVision 3.1x software.…”

The Concept of Acoustic Design of Propeller-Driven Fixed-Wing Aircrafts

“…Currently, much attention is paid to the numerical simulation of noise of various types of propellers (ducted propeller, open rotor etc). However, the existing commercial software is ineffective in solving such tasks [11], and interested organizations: MAI (NRU), TsAGI, Keldysh Institute of Applied Mathematics, AVIC Aerodynamics Research Institute and others independently develop their own software for the correct formulation of numerical aeroacoustics experiments [12][13][14][15][16]. The advantage of numerical modeling is the ability to take into account all parameters that affect the noise levels of the propeller, including installation effects.…”