Purpose: to evaluate the applicability of the Emersit-RRK water level and flow rate radar in determining water flow rate on a laboratory facility under controlled steady-state flow conditions.
Materials and methods. The laboratory studies aimed at comparative evaluation of the accuracy and practical applicability of two methods for measuring water flow rate: contact (ISVP-GR-21M1 water flow velocity meter) and non-contact (Emersit-RRK water level and flow velocity radar) are described. The experiments were conducted on a laboratory facility (hydraulic flume). The reference water flow rate was determined by a Vzlet MP URSV-311 ultrasonic flow meter-counter.
Results and discussion. Ten experiments aimed at determining water flow rate, were performed during the laboratory studies. In each experiment, such parameters as pump power, flume bottom slope, and backwater at the end of the measuring section of the flume were varied. Research using the Emersit-RRK radar revealed a maximum relative error of 21.21 % and a minimum of 8.70 %, compared to the adopted standard. Under conditions where the flume bottom slope was zero, relative flow measurement errors ranged from 8.70 to 12.50 %. However, with increasing flume bottom slope, relative flow measurement errors increased, ranging from 14.29 to 21.21 %. Thus, a direct correlation between increasing flume bottom slope and an increase in relative flow measurement errors was observed.
Conclusions. The Emersit-RRK radar is a high-tech water flow measurement device that provides real-time data on water level and flow rate. However, the radar measurement method, which determines only surface flow rate, requires the construction of a vertical velocity diagram, which is described by the function f = V(h).
laboratory facility, water level, water flow, flow rate, radar, measuring means, measurement error
Vaynberg М. V., Baev O. A., Shepelev A. E., Filimonova V. M. The study of methods for determining water flow in a laboratory facility under controlled steady-state flow conditions. Ways of Increasing the Efficiency of Irrigated Agriculture. 2026;99(2):111–122. (In Russ.).
1. Filippov E.G., 1990. Gidravlika gidrometricheskikh sooruzheniy dlya otkrytykh potokov [Hydraulics of Hydrometric Structures for Open Channels]. Leningrad, Gidrometeoizdat Publ., 286 p. (In Russian).
2. Shchedrin V.N., Kolganov A.V., Senchukov G.A., Gostischev V.D., 2021. Aktual'nye voprosy razvitiya meliorativnoy otrasli i ispol'zovaniya vodnykh resursov v APK [Current issues in the development of land reclamation industry and water resources use in the agro-industrial complex]. Melioratsiya i vodnoe khozyaystvo [Land Reclamation and Water Management], no. 4, pp. 8-11, EDN: PAKNCR. (In Russian).
3. Sommer V.L., 2015. Spetsifika gidravlicheskikh i gidrotekhnicheskikh nauchnykh issledovaniy v laboratorii gidromekhaniki i gidravliki [Features of hydraulic and hydro-technological research conducted at the laboratory of hydromechanics and hydraulics]. Stroitel'stvo: nauka i obrazovanie [Construction: Science and Education], no. 2, p. 5, EDN: TWOFIV. (In Russian).
4. Voznyuk Yu.S., 2023. Pribory dlya izmereniya skorosti techeniya vodnykh potokov. Gidrometricheskaya vertushka [Instruments for measuring the speed of water flow. Hydrometric current meter (propeller)]. Ekologicheskiy vestnik Donbassa [Ecological Bulletin of Donbass], no. 8, pp. 29-35, EDN: HNICZF. (In Russian).
5. Akhmedkhodzhaeva I.A., Zhuraev B.B., 2024. Metody opredeleniya raskhoda vody v kanalakh [Methods for determining water flow in canals]. Melioratsiya i vodnoe khozyaystvo – osnova prodovol'stvennoy i ekologicheskoy bezopasnosti: sb materialov Yubileynoy mezhdunar. nauch.-prakt. konferentsii, posvyashch. 100-letiyu obrazovaniya VNIIGiM im. A. N. Kostyakova. [Land Reclamation and Water Management – the Basis of Food and Environmental Security: Proceed. of the Anniversary International Scientific and Practical Conference Dedicated to the 100th Anniversary of Foundation of the All-Russian Research Institute of Hydrometeorology and Metrology Named after A. N. Kostyakov]. Moscow, pp. 290-296, DOI: 10.37738/VNIIGIM.-2024.57.28.048, EDN: LKYUBK. (In Russian).
6. Vasilchenko A.P., Korenovsky A.M., 2021. Telemetriya punktov vodoucheta meli-orativnoy sistemy [Telemetry of water metering points of the irrigation system]. Puti povysheniya effektivnosti oroshaemogo zemledeliya [Ways of Increasing the Efficiency of Irrigated Agriculture], no. 1(81), pp. 12-16, EDN: CTJMQA. (In Russian).
7. Tkachev A.A., Boldyrev D.D., Donchenko E.V., Snesareva M.V., 2024. Sredstva vodoucheta pri povyshenii effektivnosti upravleniya vodoraspredeleniem v kanalakh orositel'nykh sistem [Water metering means for increasing the efficiency of water distribution management in irrigation system canals]. Melioratsiya i vodnoe khozyaystvo. sb.: materialov Vseros. nauch.-prakt. konferentsii (Shumakovskie chteniya) [Land Reclamation and Water Management. Proceed. of the All-Russian Scientific and Practical Conference (Shumakov Readings)]. Novocherkassk, Lik Publ., pp. 227-234, EDN: AXXSAS. (In Russian).
8. Yuchenko L.V., Korenovsky A.M., 2021. Analiz vozmozhnosti primeneniya ul'tra-zvukovykh raskhodomerov na orositel'noy seti [Analysis of the possibility of using ultrasonic flow meters on the irrigation network]. Aktual'nye napravleniya razvitiya meliorativnogo kompleksa: sb. nauch. tr. po materialam Mezhdunar. nauch.-prakt. konferentsii, posvyashch. 90-letiyu sozdaniya FGBNU «RosNIIPM» [Current Directions of Developing Reclamation Complex: Proceed. of the International Scientific-Practical Conference Dedicated to the 90th Anniversary of Foundation of the Federal State Budgetary Scientific Institution “RosNIIPM”]. Novocherkassk, RosNIIPM, pp. 124-137, EDN: FPBQNF. (In Russian).
9. Davydov V.D., 2016. Sovershenstvovanie sredstv vodoucheta i upravleniya potokami [Improving facilities for water measurement and flow control]. Melioratsiya i vodnoe khozyaystvo [Land Reclamation and Water Management], no. 2, pp. 10-16, EDN: WHAWZX. (In Russian).
10. Churaev A.A., Yuchenko L.V., Shepelev A.E., 2023. Printsipy podkhoda k raschetu osnovnykh parametrov trapetseidal'nogo vodosliva pri osnashchenii yego sovremennym priborom izmereniya urovnya [Principles of the approach to calculating the main parameters of a trapezoidal spillway when equipping it with a modern level measuring device]. Politematicheskiy setevoy elektronnyy nauchnyy zhurnal KubGAU [Polythematic Online Scientific Journal of KubSAU], no. 192, pp. 158-168, EDN: GHFUZP. (In Russian).
