【摘要】 本文考虑的问题是二维粘性渠流．对０到２０００之间的雷诺数，计算了平稳扰动的Ｃｏｕｅｔｔｅ－Ｐｏｉｓｅｕｉｌｌｅ流的下游特征值，其特征方程类似于Ｏｒｒ－Ｓｏｍｍｅｒｆｅｌｄ方程。所用的方法是谱方法和初值方法（复合矩阵方法）．就几种有趣的流量，给出了相应的特征值的计算结果。这些特征值确定了扰动的衰减率．更多还原

【Abstract】 The problem considered is that of twe-dimensional viscous flow in a straight channel. The decay of a stationary perturbation from the Couette-Poiseuille flow in the downstream is sought.A differential eigenvalue equation resembling the Orr-Sommerfeld equation is solved by using a spectral method and an initial-value method (the compound matrix method) for values of the Reynolds number R between 0 and 2000.The eigenvalues are presented for several of interesting cases with different measures of mass flux, These eigenvalues determine the rate of decay for the purturbation.更多还原