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分析了大气边界层风洞中模拟湍流和实测大气湍流的积分尺度 ,通过风洞中的模拟湍流积分尺度分析 ,检验了Taylor假设的合理性 ,并比较了五种常用方法的计算结果 ,确定出合适的分析方法 ;利用自相关函数直接积分和自拟合模型 (AR模型 )的方法分析了实际大气湍流的积分尺度 ,结果证明自相关函数直接积分的方法最为简便合理 .
The integral scale of the simulated turbulence and the measured atmospheric turbulence in the wind tunnel of the atmospheric boundary layer is analyzed. The reasonableness of the Taylor hypothesis is verified by the integrated turbulence scale in the wind tunnel, and the calculation results of five commonly used methods are compared. The method of direct integration and self-fitting model (AR model) of autocorrelation function is used to analyze the integral scale of actual atmospheric turbulence. The result shows that the direct integral method of autocorrelation function is the most convenient and reasonable.