Abstract
His analytical model is carried out based on the one-dimensional fluid transient theory. In view of the micro-compression of the fluid can change its momentum in the transient process, an improved fluid dynamic model of pipeline is proposed. The characteristic method and the finite difference method are adopted for this simulation. In this paper, The fluid transients of the pipes after servo valve shut down are analyzed. The correctness of the simulation is approved by the comparison of calculation data with experiment data .The results showed that these models give more reasonable descriptions for water hammer and flow oscillation during servo valve starting process and could provide guidance for designs and experiments of the hydraulic pipe system
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