Mathematical modelling of the process of pipeline deformation through which gas-liquid mixtures with aggressive components are transported

• Autorzy: Oliynyk A. P. , Feshanych L. I. , Grygorchuk G. V.

Identyfikatory

DOI

10.5604/01.3001.0015.9995

• Języki publikacji: EN

Abstrakty

EN

Purpose: Mathematical modelling of the process of deformation of pipeline, transporting gasliquid mixtures with aggressive components and a comparative analysis of the value of the specified velocity depending on the dynamic viscosity of the multicomponent gas mixture is conducted. Design/methodology/approach: A mathematical model of the process of leakage of the transported product due to the loss of tightness of the pipe based on the system of Navier-Stokes equations with boundary conditions with considering the geometry of the leakage zones and the value of the leakage rate is implemented. Findings: Models of the process of deformation of the pipeline due to displacements of a certain set of surface points by specifying different types of functions, describing the geometry of deformed sections are constructed. The method of calculating the tensely deformed state based on the data on the movement of surface points by comparing different ways of setting functions, taking into account the actual configuration of sections and axes is improved. The change of flow characteristics in the pipeline when changing the structure of the mix, transported by studying of influence of change of dynamic viscosity is investigated; The method of calculating the rate of leakage of the mixture in case of loss of tightness due to the occurrence of critical stresses in the pipe material is improved. Research limitations/implications: Building a model of the deformation process, information about the nature, duration of forces and loads affecting the pipeline is not used. The law of the pipeline movement was constructed having taken into account the deformation of the sections in three directions. The necessity to take wind loads into account, estimating the real tensely deformed state was displayed. Practical implications: Using the method of calculating the tensely deformed state based on the data on the movement of surface points by comparing different ways of setting functions, taking into account the actual configuration of sections and axes. Originality/value: According to the computational algorithms created on the basis of the specified models, the calculations of the tense state of the pipelines and the flow rate of the mixture depending on its composition were performed. An analysis of the results of calculations - tense intensity and flow rate depending on the dynamic viscosity of the mixture is performed. The influence on the flow parameters - the flow rate of the mixture and the force of hydraulic resistance - changes in the dynamic viscosity of the mixture is analyzed.

Słowa kluczowe

EN

tense state; pipeline; viscous fluid flow; dynamic viscosity; Navier-Stokes equations; gas mixture

PL

rurociąg; przepływ lepkiej cieczy; lepkość dynamiczna; równania Naviera-Stokesa; mieszanina gazowa

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2022
• Tom: Vol. 111, nr 2
• Strony: 57--63
• Opis fizyczny: Bibliogr. 25 poz., rys., wykr.

Twórcy

autor

Oliynyk A. P.

• Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Str., Ivano-Frankivsk, Ukraine

• https://orcid.org/0000-0003-1031-7207

autor

Feshanych L. I.

• Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Str., Ivano-Frankivsk, Ukraine

• https://orcid.org/0000-0002-5156-2199

autor

Grygorchuk G. V.

• Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Str., Ivano-Frankivsk, Ukraine

• https://orcid.org/0000-0003-1674-9828

Bibliografia

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).