Abstract
Abstract The article describes numerical method of physical gas flow parameters recovery at accidents investigation, which are conditioned by guillotine rupture of a pipe in gas trunkline and distribution pipeline systems. The information about full-scale measurements of time dependences of gas flow parameters at defined points inside pipelines system and at its boundaries is the base for recovery implementation at numerical investigation of accidents. Numerical recovery is carried out by defining and solving a special identification problem
Highlights
The article describes numerical method of physical gas flow parameters recovery at accidents investigation, which are conditioned by guillotine rupture of a pipe in gas trunkline and distribution pipeline systems
The listed above works contain practical algorithms description of numerical analysis of gas flow along branched and circular graded pipelines that characterized by sufficient wide range of properties in the accuracy and adequacy of obtained results with respect to actual gas-dynamic processes
For the 1D problem statement, one can assume that field measurements of gas flow parameters are taken at fixed points located both at the boundaries of the pipeline system and along the length of the pipelines
Summary
At numerical analysis of accidents we face the necessity of physical parameters recovery of comersial gas flow along gaspipeline systems [1,2,3]. Limited field measurement data is the characterstic feature of such problem statement In this case it is reasonable to formalize the problemin the form of generalized mathematical identification problem of adequate space-time distribution of actual flow parameters of transported gases based on full-scale measurements in a substantially limited number of locations. It is initially assumed in this paper that the length and location of analysable system allows for using the one-dimensional setup for the gas network gas flow recovery problem [4]. It is necessary to propose the approaches to numerical solution of formulated identification problem
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