【摘要】 以三丝热线探头测得平板湍流边界层的数据为对象，提出用数字滤波技术将湍流信号分解为接近各向同性的小尺度涡和非各向同性的大尺度涡的方法。并用条件采样技术从大涡信号中提取相干结构。更多还原

【Abstract】 The data obtained from the turbulent boundary layer on a flat plate using 3-component hot wire probe are analysed.A method is proposed,which used a digital fiiter to decompose turbulent signal into two parts.One is small scale eddies that is nearly isotropic,the other is large scale eddies that is anisotropic.Then,the conditional sampling is used to extract the coherent structure.更多还原