论文部分内容阅读
本文用子波变换研究了描述壁湍流脉动速度局部奇异性行为的Ｌｉｐｓｃｈｉｔｚ奇异性指数，发现在湍流边界层中，猝发和扫掠发生时脉动速度信号的Ｌｉｐｓｃｈｉｔｚ局部奇异性指数为负值·
In this paper, we study the Lipschitz singularity index describing the local singularity of wall turbulent pulsation velocity using wavelet transform. It is found that the Lipschitz local singularity index of the pulsating velocity signal in the turbulent boundary layer is negative when the bursts and swepts occur.