Results of the experimental investigation of water inflow into a pressure pipe-collector (PC) depending on the value of the inflow angle b of the input jets are presented. The inner diameter of the experimental PC was of D=20.18 mm, and that of the output nozzles was of d=6.01 mm. The total length of the PC was 2494 mm, and its perforated part was of l = 1800 mm. The distances between the nozzles were equal to 180 mm. The water head H outside the PC was varied from 300 to 1600 mm. PCs with the inflow angles of jets of: 0o ; 45o ; 90o ; 135 o ; 180 o have been investigated. A PC in which ß ¹const has been also tested: in its initial segment, the nozzles were installed at the angle of ß = 0 o , and in the middle and terminal segments at the angle of ß = 180 o . The greatest non-uniformity of inflow into the PC, was obtained at ß = const =135o , and the least one for a PC with ß¹ const . It has been detected that by means of selection of different values of inflow angle b of input jets along PC the non-uniformity of water inflow into PC can be adjusted.
1. Yakhno O. M., Cherniuk V. V., Hnativ R. M. Napirni potoky zi zminnymy kharakterystykamy: monohrafiia [Enforced flows with variable characteristics: monograph] Lviv.: Lviv Polytechnic National University, 2016, 408 p. 2. Navoyan H. A. Primeryi gidravlicheskih raschotov vodopropusknyih sooruzheniy [Examples of hydraulic calculations of culverts], Kyiv, Budivelnyk, 1975, 148 p. 3. Voloshchuk V. A. Doslidzhennia hidravlichnykh oporiv i hidravlichni rozrakhunky truboprovodiv z dyskretno zminnymy vytratamy uzdovzh potoku [Investigation of hydraulic resistances and hydraulic calculations of pipelines with discrete variable costs along the stream]. Ph.D. dissertation: 05.23.16 “Hydraulics and engineering hydrology” Rivne, Rivne. State Technical University, 2001, 20 p. 4. Kravchuk A. M. Hidravlika zminnoi masy napirnykh truboprovodiv tekhnichnykh system: [Hydraulics of variable mass for pressure pipeline of engineering systems], abstract of dissertation for the degree of doctor technical science into specials. 05.23.16 “Hydraulics and engineering hydrology”, Kyiv, 2004, 35 p. 5. Cherniuk V. V., Ivaniv V. V. Stend dlia doslidzhennia prytoku v napirnyi truboprovid-zbyrach, prokladenyi u pototsi ridyny [Experimental test-beanches for study of inflow into pressure pipelinecollector laid in a fluid flow] The problems of water supply, sanitation, and hydraulics. Nauk.-Tech. collection. vol. 25, Kyiv. Kyiv. nat. University of Construction and Architecture, 201, p. 286–294. 6. Vasyl Ivaniv, Cherniuk Volodymyr. Influence of Jet-To-Main Stream Turning Angle in Fluid Flow from Cylindrical Nozzle of Collector-Pipeline on Flow Coefficient. Journal of Civil Engineering, Environment and Architecture. Journal of Civil Engineering, Environment and Architecture (p-ISSN 2300-5130), (e-ISSN 2300-8903). JCEEA, volume XXXIII, vol. 63 (4/2016), October-December 2016, p. 229–238. 7. Ivaniv V. V. Vplyv kuta pryiednannia strumeniv na nerivnomirnist prytoku do napirnoho truboprovoduzbyracha zalezhno vid kryteriiu Reinoldsa. [The influence of angles of joining the jets on the nonuniformity
of inflow to the pressure pipe-collector, depending on the reynolds criterion]. Bulletin of the Odessa State Academy of Construction and Architecture. 2016, Vol. No. 63, p. 286–292. 8. Smyislov V. V., Ezerskiy N. O. Gidravlicheskiy raschet perforirovannyih tsilindricheskih truboprovodov s razdachey raskhoda. [Hydraulic calculation of perforated cylindrical pipelines with flow distribution]. Hydraulics and hydraulic engineering. Vol. 30, 1980, P. 52–59.