【摘要】 本文介绍了用基于声类比的边界元计算管道风扇声场的新方法,将已被成功地应用于物体对外声场的散射计算方法推广应用到管道风扇的管内声传播和管口声辐射问题。数值结果表明了模型和方法的正确性及其可以作为管道声处理降噪敏果预测的工具。更多还原

【Abstract】 A new method for the sound propagation and radiation of ducted-fan based on acoustic analogy is discussed, which is developed from the acoustic analogy model which has been successfully used to predict the sound field out of the moving body. The numerical results show the validity of the model and the capability for the prediction of ducted-fan noise reduction.更多还原