IMPROVING THE KEY QUALITY INDICATORS AND IMPROVING THE ARTIFICIAL RAIN STRUCTURE USING A HOSE-REEL SPRINKLER

Authors:Yalansky Dmitry V., Mazhaysky Yuri A., Golubenko Mikhail I.

631.347.3
Theme: Land reclamation, water manadgement and agrophysics
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Annotation

Purpose: to improve the key quality indicators and artificial rainfall structure using a drum-reel-hose sprinkler by upgrading the factory-made sprinkler design, ensuring mist irrigation in the complete absence of surface runoff.

Materials and methods. Rainfall intensity was measured on a laboratory bench, taking into account the technical capabilities of the equipment. Rainfall uniformity was determined by the precipitation distribution uniformity coefficient, taking into account the average and maximum rainfall intensity. Droplet size was determined using indicator paper, which changes color when exposed to water. The research was based on current scientific concepts and proven methodologies. Modern methods of mathematical statistics were used to assess the reliability of observations.

Results. The average rainfall intensity from 0.25 to 0.35 mm/min was obtained by testing sprinkler nozzles of the SR-140 type with sizes from 16 to 30 mm (8 pcs. in total). For the newly designed apparatus with a 2.5 mm diameter irrigation hole, it was from 0.16 to 0.20 mm/min. For the SR-140 type apparatus, when using a 30 mm diameter nozzle, the droplet size was 3.2 mm, while with a 16 mm nozzle it was 2.7 mm, while the uniformity coefficient was 0.62. For the modernized apparatus, the average droplet diameter was 2.4 mm with an H/dhole ratio of 2000 and 2.1 mm with an H/dhole ratio of 8000, while the uniformity coefficient changed from 0.83 to 0.91 when operating in the same range.

Conclusions. The proposed sprinkler model (Patent No. 2759221) improved all key rainfall quality indicators and rainfall patterns. The correlation between the average rain intensity generated by the new-design apparatus (0.16‒0.20 mm/min) and the steady rates of water absorption by the soil (0.24‒0.20 mm/min) is noted, which determines the expediency of the design proposal.

doi: 10.31774/2712-9357-2026-16-2-56-75

Keywords

rainfall intensity, droplet size, precipitation uniformity, sprinkler, jet impeller, drop size distribution

For quoting

Yalansky D. V., Mazhaysky Yu. A., Golubenko M. I. Improving the key quality indicators and improving the artificial rain structure using a hose-reel sprinkler. Land Reclamation and Hydraulic Engineering. 2026;16(2):56–75. (In Russ.). https://doi.org/10.31774/2712-9357-2026-16-2-56-75.

Authors

D. V. Yalansky – Associate Professor of the Department of Hydraulic Structures and Water Supply, Candidate of Technical Sciences, Belarusian State Agricultural Academy (213410, Republic of Belarus, Mogilev region, Gorki, Michurin St., 5), dimka-045@mail.ru, ORCID: 0000-0002-7808-8204;

Yu. A. Mazhaysky – Chief Researcher, Doctor of Agricultural Sciences, Professor, Meshchersky branch of the All-Russian Research Center for Hydraulic Engineering and Land Reclamation Named After A. N. Kostyakov (390021, Ryazan, Meshcherskaya (Solotcha) St., 1A), director@mntc.pro, ORCID: 0000-0002-0743-8289;

M. I. Golubenko – Researcher, Honored Inventor of the Russian Federation, Meshchersky Scientific and Technical Center (390013, Ryazan region, Ryazan, Tipanova St., 7), golubenko-mihail@mail.ru, ORCID: 0009-0003-8543-4448.

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