本文提出用色噪声来建立湍流两相流动模型的设想,提取色噪声特征、建立 F~(-2)色噪声两相流 PDF 模型理论,包括表达湍流相关函数的简单随机方程、色噪声扩维方法的两相湍流 PDF 输运方程、统一色噪声方法的两相湍流 PDF 输运方程,推导了两种方法的二阶矩模型,最后用两种一维 PDF 方程对颗粒湍流扩散进行了近似比较计算,比较分析了两种 PDF 输运方程的特点。
【英文论文摘要】
The color-noise was presented to deal with two-phase flow,the PDF Two-phase flow theory based on F~(-2)Color-Noise is set up,the PDF Two-phase flow theory includes the Stochastic equation expressing the turbulent correlation functions,the PDF Transport Equation based on Colored Noise Dimension Expanding Method and United Colored Noise Method,second moment model of two-phase flow based on two different method.1 D PDF transport equation of CNDE and UCN is reduced to calculate particles turbulent dispersion,an...