Purpose: theoretical and experimental determination of the flow coefficient of the injection water outlet, the coefficients of hydraulic resistance of the structure during the control process and during operating in the water outlet mode without the injected flow entry.
Materials and methods. The material for research was data of an experimental study of the operation of a physical model of an injection regulator in a hydraulic chute. The model was made in a linear scale of 1:10 from organic glass. To process the experimental results, mathematical statistics and error theory methods were used. The calculated theoretical dependencies were obtained using methods of the theory of ejector pumps and fluid mechanics; to compare the results the general scientific research methods – analysis and synthesis – were used.
Results. The results of theoretical studies made it possible to obtain calculated dependencies for determining the flow coefficient of the injection regulator when operating in water outlet mode and during the regulation process. Theoretical dependencies are verified by experimental data.
Conclusions. A sufficient convergence of data obtained theoretically and experimentally has been stated. A computer program implementing hydraulic calculations of an injection water outlet-regulator has been registered.
hydraulic structures, water outlets, flow regulators, injection, hydraulic resistance
Snezhko V. L., Kobozev D. D. Flow coefficient of injection water outlet-regulator. Ways of Increasing the Efficiency of Irrigated Agriculture. 2023;91(3):263–276. (In Russ.).
1. Do Amaral L.G.H., Ramos M.M., da Silva D.D., Cecon P.R., da Freitas L.C., 2010. Performance of an automatic discharge regulator for irrigation channels. Engenharia Agricola, 30(6), pp. 1165-1177, DOI: 10.1590/S0100-69162010000600017.
2. Menon J., Mudgal B.V., 2018. Experimental determination of contraction coefficient and velocity coefficient for radial gates with elliptical lips. Sadhana – Academy Proceedings in Engineering Sciences, 43(4), 61, DOI: 10.1007/s12046-018-0818-x.
3. Shkulanov E.I., Lobanov G.L., 2011. [Research for water level stabilizers for irrigation systems]. Nauchnyy zhurnal Rossiyskogo NII problem melioratsii, no. 3(03), 12 p., available: http:rosniipm-sm.ru/article?n=452 [accessed 01.10.2023]. (In Russian).
4. Mukanov T.A., 2021. Vodovypusk-stabilizator raskhoda vody iz kanalov s burnym rezhimom techeniya [Water outlet-stabilizer of water flow rate from channels with a turbulent flow mode]. Izvestiya Kyrgyzskogo gosudarstvennogo tekhnicheskogo universiteta im. I. Razzakova [Bull. of Kyrgyz State Technical University named after I. Razzakov], no. 1(57), pp. 179-184. (In Russian).
5. Pakhomov A.A., Kolobanova N.A., 2013. [Automated management of water supply process using hydraulic means for control]. Nauchnyy zhurnal Rossiyskogo NII problem melioratsii, no. 4(12), pp. 168-178, available: https:www.rosniipm-sm.ru/article?n=665 [accessed 01.10.2023]. (In Russian).
6. Kadirova M.G., 2021. Hydraulic automatic regulator of level with flexible working bodies. E3S Web of Conferences, 264, 03039, DOI: 10.1051/e3sconf/202126403039.
7. Aksenov G.V., Olkhovoy S.A., 2012. Issledovaniya raskhodnoy kharakteristiki avtomatizirovannogo chekovogo vodovypuska s tarel'chatym zatvorom [Investigation of discharge characteristics of automatic paddy offtake regulator with orchard valve]. Risovodstvo [Rice Growing], no. 20, pp. 67-71. (In Russian).
8. Ovchinnikov A.S., Kiseleva R.Z., Melikhov K.M., Kiselev A.A., 2022. Avtomaticheskie regulyatory dlya osnashcheniya gidrotekhnicheskikh sooruzheniy pri oroshenii risa [Automatic regulators for equipment of hydraulic structures for rice irrigation]. Izvestiya Nizhnevolzhskogo agrouniversitetskogo kompleksa: nauka i vysshee professional'noe obrazovanie [Proc. of Lower Volga Agro-University Complex: Science and Higher Education], no. 1(65), pp. 342-351, DOI: 10.32786/2071-9485-2022-01-33. (In Russian).
9. Kobozev D.D., Snezhko V.L., 2023. Sravnenie gidravlicheskikh kharakteristik inzhektsionnykh regulyatorov s razlichnoy formoy ispolneniya vykhodnogo uchastka [Comparison of hydraulic characteristics of injection regulators with different forms of execution of the outlet section]. Gidrotekhnicheskoe stroitel'stvo [Power Technology and Engineering], no. 2, pp. 29-33. (In Russian).
10. Kobozev D.D., Snezhko V.L., 2023. Uchet gidravlicheskikh poter' pri opredelenii propusknoy sposobnosti inzhektsionnykh regulyatorov raskhoda [Accounting of hydraulic losses when determining the discharge capacity of injection flow regulators]. Sovremennye problemy gidravliki i gidrotekhnicheskogo stroitel'stva: sb. tezisov dokladov VI Vserossiyskogo nauchno-prakticheskogo seminara [Current Problems of Hydraulics and Hydraulic Engineering: Collection of Abstract Reports of the VI All-Russian Scientific-Practical Seminar]. Moscow, pp. 176-177. (In Russian).
11. Kobozev D.D., 2023. Programma rascheta zaglubleniya bezdiffuzornogo inzhektsionnogo regulyatora raskhoda [Program for Calculating the Depth of a Diffuserless Injection Flow Regulator]. Certificate of registration of the computer program, no. 2023668252. (In Russian).
12. Mambetov E.M., Satarkulov S.S., 2020. K voprosu sovershenstvovaniya komponovok vodovypuskov iz otkrytykh vodotokov [On the issue of water outlets improvement from open circuits]. Vestnik Kyrgyzskogo gosudarstvennogo universiteta stroitel'stva, transporta i arkhitektury im. N. Isanova [Herald of Kyrgyz State University of Construction, Transport and Architecture named after N. Isanov], no. 2(68), pp. 314-318, DOI: 10.35803/1694-5298.2020.2.314-318. (In Russian).
