Simulation and Experimental Research on Aerodynamic Noise of Self Ventilated and Direct Cooling Wind Turbines
To study the spectral distribution characteristics of aerodynamic noise of self ventilated and direct cooling wind turbines,a hybrid computational aerodynamic acoustics method was used to simulate the aerodynamic noise of self ventilated and direct cooling wind turbines.The flow rate,noise sound pressure level,and one-third octave band of the motor at rated speed were tested.Through simulation and experimental comparison,the flow simulation error was 4.25%,and the average sound pressure level simulation error was 2.4 dB(A),which verifies the reliability of the simulation method.The frequency spectrum distribution characteristics of motor noise in the 1/3 octave band were analyzed,and the direction of noise reduction was pointed out.
wind turbineself ventilateddirect coolingaerodynamic noisesimulation1/3 octave band
万方数据
维普
