Applied computer model of the non-stationary gas flow in a long multilayer-insulated high-pressure subsea gas pipeline

• Published in: Doklady. Chemistry Vol. 470; no. 1; pp. 279 - 282
• Main Authors: Meshalkin, V. P., Chionov, A. M., Kazak, A. S., Aristov, V. M.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-09-2016; Springer Nature B.V
• Subjects: Chemical Technology; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Conduction heating; Conductive heat transfer; Differential equations; Gas flow; Gas pipelines; Heat flux; High pressure; Industrial Chemistry/Chemical Engineering; Multilayers; Numerical analysis
• ISSN: 0012-5008; 1608-3113
• DOI: 10.1134/S0012500816090020

An applied fluid-dynamics model of the non-stationary flow in a long multilayer-insulated high-pressure subsea gas pipeline was developed. Instead of a complex partial differential heat conduction equation, which represents the heat flux between the flowing gas and the environment in the energy balance equation, the model uses a first-order ordinary differential equation. The applied model allows one to significantly increase the speed of numerical computation of the fluid-dynamics parameters of the gas flow in the pipeline, which is necessary for multivariate computations in design and operation of gas pipelines.