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具有流动的管道内的降噪工作是很有用的工程实际问题,当噪声源很强时就成为非线性问题。本文提出了一种非线性方法,可用来数值计算有流动时分通管对强噪声源的降噪影响。难点是建立并求解了连接点处的流动关系。数值算例表明,这种方法对线性和非线性情况下有流动的管道内利用旁通管的反声降噪问题都可适用。
Noise reduction within a flowing pipe is a very useful practical engineering problem that becomes a non-linear problem when the noise source is strong. This paper presents a non-linear method that can be used to numerically calculate the effect of noise reduction of a strong noise source with a flow-time splitter. The difficulty is to establish and solve the flow of connections at the junction. Numerical examples show that this method can be applied to the anti-noise reduction problem of the bypass pipe in a flowing pipe under both linear and non-linear conditions.