Application of soft computing to research of transient processes in the gas pipelines

The article considers the issues of applying the methodology of "soft computing" to analyze transients in gas pipelines. The gas pipelines have to operate in the transient regime before an exit to new steady-state flow regime. A set of values for the pressure of gas within the interval of output at the new steady-state flow regime was considered as fuzzy set, when with sufficient accuracy can only be determined values for the gas pressure to shut-down and after the new flow regime. On the basis of the computational experiments was obtained time series for changes in the basic parameters of the gas stream and constructed the corresponding curves. These curves were processed by methods of fractal geometry and the basic laws of their behavior. An effective apparatus to diagnose structural changes of the gas flow in case of emergency situations in gas pipelines is developed. The results of these studies can be recommended for use by services operating gas pipelines.