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Abstract
Analysis of various studies has shown that one of the most promising ways to reduce hydraulic resistance in pipelines during transportation of liquid fluid is a method based on changing the wettability of functional surfaces, i.e. hydrophobization. This paper presents the results of experimental studies of the effect of hydrophobization of pipe surfaces on hydraulic losses. For this purpose, experimental tube samples of steel (20Kh13) were made, on the surface of which a spiral relief was formed using laser equipment, resulting in a hydrophobic state, and the value of the contact angle was 160.7°. From the analysis of the results of experimental studies, the dependence of hydraulic resistance on Reynolds number was obtained, from which it follows that the use of hydrophobic surfaces during water transportation helps to reduce the hydraulic resistance to 9.7%.
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