Random Process Analysis on Pulse Amplitude of Open Channel Flow

摘要

This article, based on the analysis of the collected instantaneous velocity data, confirmed the randomness of water movement and met the stationary random process. The relationship between the pulse amplitude, Reynolds number and Froude number and it satisfies the trend of exponential curve, that is, with the large average pulse amplitude, Reynolds number and Froude number gets larger, and it leads to the change of the corresponding flowing structure. The pulse amplitude along the depth direction distributes according to an exponential curve, as the water depth increases, the pulse amplitude increases. The fluctuation of velocity plays an important role in the pulse velocity and incipient velocity of sediment river erosion, river bank erosion and collapse of the damaged dike. So the research of pulse amplitude is very necessary.