Destabilization of stream in a channel with the length-varying flow rate

Authors

  • Олег Михайлович Яхно National Technical University of Ukraine "Kyiv Polytechnic Institute" Peremogy Ave, 37, building 1, room 255, Kiev, 03056, Ukraine https://orcid.org/0000-0003-1356-7850
  • Наталья Валерьевна Семинская National Technical University of Ukraine "Kyiv Polytechnic Institute" Peremogy Ave, 37, building 1, room 255, Kiev, 03056, Ukraine
  • Денис Валерьевич Колесников Cherkassy Institute of Fire Safety named by Heroes of Chernobyl Onoprienko Str. 8, Cherkassy, Ukraine, 18034, Ukraine
  • Сергей Васильевич Стась Cherkassy Institute of Fire Safety named by Heroes of Chernobyl Onopriyenko Str. 8, Cherkassy, Ukraine, 18034, Ukraine

DOI:

https://doi.org/10.15587/1729-4061.2014.24658

Keywords:

discrete sampling, destabilization, channel curvature, transit flow rate, fictitious length

Abstract

The flow of viscous and abnormally-viscous fluids in hydraulic systems with a curvilinear pipeline and length-varying mass, used for surface irrigation is experimentally investigated in the paper. A comparison of the hydraulic characteristics of such streams with similar results at a constant flow rate is carried out.

These studies are caused by the need to justify the design parameters of water supply and irrigation systems, which ensure their reliability. Violation of stability and reliability can be caused by unstabilized processes, constantly arising in the operation of such systems and can lead to destabilization of the equipment.

As a result of the studies, the difference in determining the hydraulic losses is found, and recommendations for calculating the pressure drop in the channels of the discrete liquid sampling along the length are given.

This will allow to forecast the operation of irrigation systems at given geometric parameters, kinematic and dynamic characteristics of the stream.

Author Biographies

Олег Михайлович Яхно, National Technical University of Ukraine "Kyiv Polytechnic Institute" Peremogy Ave, 37, building 1, room 255, Kiev, 03056

Doctor of Technical Sciences, Professor

Head of the Department

Department of applied fluid mechanics and mechatronics

Наталья Валерьевна Семинская, National Technical University of Ukraine "Kyiv Polytechnic Institute" Peremogy Ave, 37, building 1, room 255, Kiev, 03056

PhD, Associate Professor

Department of applied fluid mechanics and mechatronics

Денис Валерьевич Колесников, Cherkassy Institute of Fire Safety named by Heroes of Chernobyl Onoprienko Str. 8, Cherkassy, Ukraine, 18034

Senior Lecturer

Department of automatic safety systems and electrical

Сергей Васильевич Стась, Cherkassy Institute of Fire Safety named by Heroes of Chernobyl Onopriyenko Str. 8, Cherkassy, Ukraine, 18034

Ph.D., Associate Professor, Head of Department

Department of Technique

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Published

2014-06-20

How to Cite

Яхно, О. М., Семинская, Н. В., Колесников, Д. В., & Стась, С. В. (2014). Destabilization of stream in a channel with the length-varying flow rate. Eastern-European Journal of Enterprise Technologies, 3(7(69), 45–49. https://doi.org/10.15587/1729-4061.2014.24658

Issue

Vol. 3 No. 7(69) (2014): Applied mechanics

Section

Applied mechanics

License

Copyright (c) 2014 Олег Михайлович Яхно, Наталья Валерьевна Семинская, Денис Валерьевич Колесников, Сергей Васильевич Стась

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