Status of Research on Water Hammer Effect in Long Distance Pressure Pipelines

In the long distance pressure pipeline, sudden change of instantaneous caused by rapid liquid velocity is called water hammer, which seriously threatens safe operation hydropower station. this paper, development and calculation methods transient flow percussion theory are introduced, different models numerical analyzed compared. Finally, problems in research hammer prevention measures summarized, helpful to reduce occurrence accidents guarantee normal stable supply pipeline system. This conclusion can provide reference for protection