The simulation of gas outflow from the hole in the long pipelines, operating under high pressure

Yakimov, N. D.; Khafizova, Aliya; Дмитриева, О. С.; Artem’eva, E. V.

doi:10.1109/itnt49337.2020.9253175

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…An extensive list of publications is devoted to modeling and analysis of the main and emergency regimes of gas flow through pipelines [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. In works [6,10,11], the main modes of gas transportation are considered, and the need to take into account the non-isentropic and nonadiabatic nature of gas movement in the pipeline is indicated.…”

Section: Problem Statementioning

confidence: 99%

See 1 more Smart Citation

Predicting Accident Modes in a Gas Pipeline with Incomplete Parameters

Podvalny

Куцова²,

Vasiljev

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The paper solves the problem of predicting the emergency states of gas pipelines in cases where the initial parameters of the pipeline are not fully known a priori and can change during operation. The coefficient of heat transfer from gas to the external medium and the coefficient of internal viscous friction of hydraulic resistance are considered as such parameters. The theoretical calculation of these coefficients with sufficient accuracy for practice is very difficult due to the significant uncertainty of the actual conditions of heat transfer along the route and the current state of the pipeline. To solve this problem, a mathematical model of a steady gas flow in a pipeline is proposed, which is based on the assumptions about the polytrophic nature of the gas, as well as the non-isentropic and nonadiabatic nature of its flow. Together with the model, a method for identifying undefined coefficients has been developed. The problem of building the corresponding computational procedures with unknown boundary conditions is solved. An analysis of emergency states of a gas pipeline for cases of complete rupture and partial destruction of its wall was carried out by means of numerical modeling. Examples of using the developed model for predicting emergency states of gas pipelines are given.

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Section: Problem Statementioning

confidence: 99%

“…A varied approach to taking this circumstance into account is demonstrated in papers [12][13][14][15][16][17], differing in various degrees of idealization of the gas state. In [18][19][20][21][22][23], the modes of emergency outflow from partial destruction of pipeline walls are considered, and in [24] -the case of complete destruction.…”

Section: Problem Statementioning

confidence: 99%

Predicting Accident Modes in a Gas Pipeline with Incomplete Parameters

Podvalny

Куцова²,

Vasiljev

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…Most of the research on emergency gas pipeline ruptures is devoted to the actual process of gas outflow through the rupture [9][10][11][12][13][14]. In [11], when analyzing the process of gas outflow, the influence of the state of the atmosphere is additionally considered.…”

Section: State Of the Problemmentioning

confidence: 99%