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2025 №01 (07) DOI of Article
10.37434/tdnk2025.01.01
2025 №01 (02)

Technical Diagnostics and Non-Destructive Testing 2025 #01
"Tekhnichna Diahnostyka ta Neruinivnyi Kontrol" (Technical Diagnostics and Non-Destructive Testing) #1, 2025, pp. 3-9

Substantiation of new diagnostic parameters of pipeline systems efficiency

I.V. Rybitskyi1, O.M. Karpash2, V.Yu. Zapeka2, P.M. Raiter1, A.V. Yavorskyi1, N.I. Chaban3

1Ivano-Frankivsk National Technical University of Oil and Gas. 15 Karpatska Str., 76019, Ivano-Frankivsk, Ukraine. Е-mail: admin@nung.edu.ua
2Kharkiv Ivan Kozhedub National University of the Air Force. Ukraine. Е-mail: info@hups.mil.gov.ua
3King Danylo University. 35 E. Konovaltsia Str., 76018, Ivano-Frankivsk, Ukraine. Е-mail: university@ukd.edu.uaa

One of the main tasks of technical diagnostics of pipeline systems is to ensure their reliable and at the same time energyeffi cient operation. In this work, we have searched for and developed the basis for constructing mathematical models of new informative parameters for diagnosing the technical condition and efficiency of pipeline systems. It is shown that the capacity of a pipeline decreases when it acquires an elliptical cross-sectional configuration. It is substantiated that the presence of small leaks in pipeline systems causes a loss of flow stability in the pipeline, the emergence of turbulent flow zones, which reduces the efficiency of the pipeline. 11 Ref., 3 Fig.
Keywords: technical diagnostics, informative parameters, energy efficiency, pipeline systems, mathematical model

Received: 26.11.2024
Received in revised form: 24.12.2024
Accepted: 10.03.2025

References

1. Rybitskyi, I.V., Oliynyk, A.P., Yavorskyi, A.V. et al. (2019) Impact assessment of non-technological fluid accumulations in the cavity of an existing gas pipeline on the energy efficiency of its operation. Physics and Chemistry of Solid State, 20(4), 457-466. https://doi.org/10.15330/pcss.20.4.457-466
2. Doroshenko, Y., Rybitskyi, I. (2020) Investigation of the influence of the gas pipeline tee geometry on hydraulic energy loss of gas pipeline systems. Eastern-European J. of Enterprise Technologies, 1, (8(103), 28-34. https://doi.org/10.15587/1729-4061.2020.192828
3. Konstantinov, Yu.M., Gizha, O.O. (2002) Technical mechanics of fluids and gas: Manual. Kyiv, Vyshcha Shkola [in Ukrainian].
4. Koichi Nakabayashi, Osami Kitoh, Voshitaka Katoh (2004) Similarity laws of velocity profiles and turbulence characteristics of Couette-Poiseuille turbulent flows. J. of Fluid Mechanics, Vol. 507, Published online by Cambridge University Press, 25 May 2004, 43-69. https://doi.org/10.1017/S0022112004008110
5. Dickerson, P., Worthen, J. (2024) Optimizing pipeline systems for greater precision, efficiency & safety using emerging technologies. In: PSIG Annual Meeting, Charleston, South Carolina, 7-10 May 2024. PSIG-2426.
6. Larson, R.G. (1992) Instabilities in viscoelastic flows. Rheol. Acta, 31, 213-263. https://doi.org/10.1007/BF00366504
7. Frigaard, I.A., Howison, S.D., Sobey, I.J. (1994) On the stability of Poiseulle flow of a Bingham fluids. J. Fluid Mechanics, Vol. 263, Published online by Cambridge University Press, 26 April 2006, 133-150. https://doi.org/10.1017/S0022112094004052
8. Dubrulle, B., Laval, J.-P., Nazarenko, S., Zaboronski, O. (2004) A model for rapid stochastic distortions of small-scale turbulence. J. of Fluid Mechanics, Vol. 520, Published online by Cambridge University Press, 29 November 2004, 1-21. https://doi.org/10.1017/S0022112004001417
9. Zeytounian, R.K., Platzer, M.F. (2004) Theory and applications of viscous fluid flows. Applied Mechanics Reviews, 57(3), B15-B16. https://doi.org/10.1115/1.1760521
10. Oliynyk, A.P., Shtaier, L.O. (2012) Investigation of the influence of relaxation parameters on the convergence of the numerical method of sequential upper relaxation for the Dirichlet problem. Carpathian Mathematical Publications, 4(2), 289?296 [in Ukrainian]..
11. Bennequin, D., Gander, M.J., Gouarin, L., Halpern, L. (2016) Optimized Schwarz waveform relaxation for advection reaction diffusion equations in two dimensions. Numer. Math., 134(3), 513-567. https://doi.org/10.1007/s00211-015-0784-8

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