Нестаціонарні процеси у нафтопродуктопроводі при використанні протитурбулентних присадок

The problem of a non-stationary flow of petroleum products by the pipeline in the process of its displacement by anti-turbulence additives is studied in the article. There is made a mathematical model of motion of a contact for two liquid media with different hydraulic characteristics in the pipeline. The model implementation allows predicting the type of motion of the moving boundary, pressure distribution and flow of petroleum products during the process of non-stationary displacement. It is determined that oscillation of parameters in time is negligible, and it allows recommending the quasistationary motion models for predictive calculations