Chaban, BohdanLesovoy, Leonid2018-03-072018-03-072015Chaban B. Definition of equivalent roughness of internal surface of a measuring pipeline / Bohdan Chaban, Leonid Lesovoy // 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. 152–153. – Bibliography: 5 titles.https://ena.lpnu.ua/handle/ntb/39575Literature on the methods for defining the equivalent roughness of the internal surface of a measuring pipeline was analyzed. The equation for calculating the hydraulic resistance coefficient of friction of natural gas on the internal surface of the measuring pipeline was developed. The equation for calculating the equivalent roughness of the internal surface of the measuring pipeline was obtained. This equation provides improvement of accuracy of natural gas flow rate and volume measurement by means of the differential pressure method.enequivalent roughnessflownatural gasdifferential pressure methodstandard orifice platehydraulic resistance coefficient of frictionConference Abstract152-153