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The article describes numerical method of physical gas flow parameters recovery at gas trunkline and distribution pipeline networks. The information about full-scale measurements of time dependences of gas flow parameters at defined points inside pipeline networks and at its boundaries is the base for recovery implementation. Numerical simulation is carried… (More)

- Vadim Eugenjevich Seleznev
- J. Applied Mathematics
- 2010

The paper describes a new method for numerical monitoring of discrepancies in natural gas supply to consumers, who receive gas from gas distribution loops. This method serves to resolve the vital problem of commercial natural gas accounting under the conditions of deficient field measurements of gas supply volumes. Numerical monitoring makes it possible to… (More)

- Vadim Seleznev
- 2012

At the present level of development of long, branched gas transmission networks (GTN), solving the problems of improving safety, efficiency and environmental soundness of operation of industrial pipeline systems calls for the application of methods of numerical simulation. The development of automated devices for technical inspection and process control,… (More)

- Sergey N. Pryalov, Vadim E. Seleznev
- 2014

We consider two new methods for numerical solution of a complete system of partial differential equations describing the flow of a gas mixture in pipeline systems. The first method tracks Lagrangian particles as they move together with the flow of transported fluid. When implementing this method, the flow parameters are found by means of a difference… (More)

- Vadim Eugenjevich Seleznev
- J. Applied Mathematics
- 2012

Optimal control, prevention and investigation of accidents, and detection of discrepancies in estimated gas supply and distribution volumes are relevant problems of trunkline operation. Efficient dealing with these production tasks is based on the numerical recovery of spacetime distribution of nonisothermal transient flow parameters of transmitted gas… (More)

- V. Seleznev, V. Aleshin, V. Kobyakov
- 2005

Technical diagnostics of buried gas and oil pipelines is accomplished using magnetic and ultrasonic pigs. At present these methods allow to reveal corroded defects and define their sizes. Simplified techniques that are widely used all over the world for evaluation of the remaining strength of corroded pipeline segments are conservative and hamper… (More)

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