Abstract
A problem of modeling a hydraulic shock in a moving spatial pipeline is studied. The analysis of a non-stationary liquid flow resulting from the vibration of the pipeline is reduced to solving a mixed problem with non-stationary boundary conditions. To analyze the problem, a numerical algorithm is developed, where the method of characteristics and a first-order finite-difference scheme are implemented. The results of comparing the test calculations with an analytical solution and the results of the analyzing hydro-dynamic processes in a spatial pipeline for a preset seismic load corresponding to a typical earthquake are presented. Key words: modeling, hydraulic shock, spatial pipeline, mixed problem, nonstationary boundary conditions, seismic load.
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