In view of problems existing in velocity of flow monitoring points collocation in circular flue, using hydrodynamics theory to analyze and optimize, one monitoring point at 0.
One of the key problems in the nonlinear theory of the hydrodynamic stability is to determine the law of the evolution of the disturbance velocity amplitude.
求解扰动速度幅值的演化规律，是流动稳定性非线性理论的关键问题之一。
3
Based on point-by-point integration method and one dimension theory, designed the guide vane which has uniform velocity moment distribution with a hydraulic design computer code of the guide vane.