Changes in gas flow in the pipeline depending on the network foundation in the area

The article presents an analysis of the results of overpressure distribution, velocity and gas streams obtained during the simulation of gas flow in the low pressure pipeline network. The calculations were made for the section of an existing gas network and the actual data describing gas consumption from the network by municipal customers and actual weather data characteristic to the specific city. Minimum and maximum overpressure of gas stream entering the network was determined, depending on the size of the network load and the difference in height between the gas station supplying the network and the most distant network connection (parameter ΔH). It was demonstrated that taking into account in the calculation the differences in the height of particular pipelines location in the network affects the selection of overpressure limit values of gas stream supplying the network. Moreover, gas overpressure distributions were compared in particular pipelines in the network for different cases of pipeline location in the area.