Ghavrish, A.A.GhavrishKolosov, D.D.Kolosov2019-02-082019-02-082018Ghavrish A. The hydraulic impact and alleviation phenomena numeric modeling in the industrial pumped pipelines = Чисельне моделювання гідроударних явищ та їх гасіння в трубопроводах під тиском промислового призначення / A. Ghavrish, D. Kolosov // Національний гірничий університет. Збірник наукових праць. – Дніпро : НГУ, 2018. – № 55. – P. 172-185.http://ir.nmu.org.ua/handle/123456789/153690The issues of the hydropercussion phenomena mathematical modeling in the industrial pumped piping systems, with the pumps and dampeners included, to determine the impact absorbers effectiveness on the amplitude-frequency charac- teristics of these hydro-mechanical systems are considered. It’s still actual and many authors are still looking for the systems CFD issues research and resolution, see [6, 7]. Method of calculating the transient and frequency characteristics of the pipeline that contains a pump and a dampener, is based on nonlinear mathematical model. Simulation of overlapping stream with using industrial valves is provided by introducing the exponential law of diminishing cross-sectional area of the pipeline. The basis of calculation is the method of characteristics applied to the simplified Navier- Stokes equations.enвычислительная гидродинамикаобчислювальна гідродинамікагідроударне явищегидроударное явлениедемпферArticleУДК 621.6