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Title: Definition factors cubic approximating polynomial for locking characteristics of steel pipelines
Authors: Muzychak, Andriy
Pasternak, Roman
Affiliation: Lviv Polytechnic National University
Bibliographic description (Ukraine): Muzychak A. Definition factors cubic approximating polynomial for locking characteristics of steel pipelines / Andriy Muzychak, Roman Pasternak // Litteris et Artibus : proceedings of the 5th International youth science forum, November 26–28, 2015, Lviv, Ukraine / Lviv Polytechnic National University. – Lviv : Lviv Polytechnic Publishing House, 2015. – P. 160–161. – Bibliography: 4 titles.
Conference/Event: Litteris et Artibus
Issue Date: 2015
Publisher: Lviv Polytechnic Publishing House
Country (code): UA
Place of the edition/event: Lviv
Keywords: engineering grid
hydraulic condition
locking ratio
approximation polynomial
Number of pages: 160-161
Abstract: An important part of mathematical models of hydraulic state engineering grids is locking ratio. Traditionally it represent a cubic approximation polynomial, which adequately reproduce locking characteristics of pipelines of various diameters and materials. Defined simple functions to determine the factors of the approximation polynomial based on the diameter. These functions are a convenient tool to obtain baseline data necessary in mathematical models of engineering grids.
References (International): [1] N. N. Novickij, E. V. Sennova and M. G. Suharev, “Gid-ravlicheskie cepi. Razvitie teorii i prilozhenija” [“Hyd-raulic circuits: Development of the theory and appli-cations”], Novosibirsk: Nauka Publ., 2000. [2] A. Muzychak and Y. Turkowski, “Aproksymatsiina forma zamykalnoho spivvidnoshennia” [“Approximation form of locking ratio”] // In Electric Power Engineering and Control Systems: Proceeding IV International Academic Conference of Young Scientists EPECS-2013, Lviv, pp.10-11, 2013. [3] G.A.F. Seber, Linear regression analysis, John Wiley and sons Publ., New York, 1977. [4] Y. V. Dunyn-Barkovskyi and N. V. Smyrnov, “Teoryia veroiatnostei i matematycheskaia statystyka v tekhnyke” [“Probability theory and mathematical statistics in the technique”], Moscow: State publishing technical and theoretical literature, 1955, 556 pages.
Content type: Conference Abstract
Appears in Collections:Litteris et Artibus. – 2015 р.

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