Sensitivity analysis of the gas transmission offshore pipeline model to variations of the model parameters

G. I. Kurbatova ; N. N. Ermolaeva

Vestnik Sankt-Peterburgskogo universiteta. Prikladnaâ matematika, informatika, processy upravleniâ, Tome 15 (2019) no. 1, pp. 47-61

Résumé

Basic approaches to defining the coefficient of hydraulic resistance and the total heat transfer coefficient between the gas and the ambient in the model of an unsteady nonisothermal gas flow through an offshore gas-pipelines are considered. Model sensitivity to variations of these coefficients is illustrated by the charts, demonstrating influence of these coefficients on the basic flow characteristics. The coefficient of hydraulic resistance and the heat transfer coefficient calculations for one from test variant of gas transmission are given. The calculation method of these parameters from the experimental date, enabling to provide the validity of model of the unsteady nonisothermal gas flow through a sea gas pipeline when calculating certain pipeline is suggested.

Détail

Keywords: offshore gas-pipelines, dynamic of glaciation, nonstationary flow, identification of friction factors and of sensitivity analysis of the gas transmission offshore pipeline model to variations of the model parameters, sensitivity analysis of the model.
Mots-clés : gas transmission

Bibliographie

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