NUMERICAL STUDY OF THE EXHAUST GAS FLOW OF TV3-117 TYPE ENGINES IN COMPOSITION WITH A SCREEN - EXHAUST DEVICE
The object of research is a screen-exhaust device in the TV3-117 engine of the Mi-8 helicopter.
Investigated problem: The problem of equalizing the flow in the exhaust nozzle is solved. As a result of the numerical study, the total pressure losses are calculated and the flow structures in the structural elements of the exhaust nozzle and the screen-exhaust device (SED) are analyzed.
Main scientific results: Obtained Gas-dynamic parameters of the flow in the SED flow path are obtained and the verification of injection processes between the working circuits along the path in the SED design is done. Numerical modeling of gas flows in the SED flow path makes it possible to study in detail the characteristics of the flow at any of its points, as well as to determine the values of hydrodynamic losses associated with the formation of a boundary layer and the emergence of separation zones. A constructive method for leveling the gas-dynamic flow is proposed by installing a blade in the form of an aerodynamic profile in a standard engine exhaust nozzle. Two variants of engine nozzles are investigated under the same boundary conditions using a standard exhaust nozzle with and without a blade. The influence of uneven flow in the exhaust nozzle on the nature of the flow in the SED is shown. An insignificant equalization of the flow in the exhaust nozzle using the installed blade led to a decrease in the total pressure loss in the SED by more than 1 %.
The area of practical use of the research results: The results of calculations and modeling can be used for computational and experimental studies aimed at improving the flow path of the exhaust nozzle and the screen-exhaust device by the developers of new military aviation equipment or when modernizing the existing helicopter fleet.
Scope of application of the innovative technological product: a new screen-exhaust device has been proposed for left and right TV3-117 engines of all types, which can be installed on the Mi-8MSB-V, Mi-8MT, Mi-14, Mi-24 helicopters. It is competitive and has significantly higher technical and economic indicators compared to known analogues.
"Mozhlyvosti OPK Ukrainy shchodo modernizatsii boiovykh vertolotiv PS ZSU ta nalahodzhennia yikh litsenziinoho vyrobnytstva". Analitychna zapyska. Available at: http://old2.niss.gov.ua/articles/539/
Maslennikov, M. M., Bekhli, Iu. G., Shalman, Iu. I. (1969). Gazoturbinnye dvigateli dlia vertoletov. Moscow: Mashinostroenie, 368.
Marynowski, T., Desevaux, P., Mercadier, Y. (2009). An Investigation of Ejector Design by CFD Modelling. International Journal of Turbo and Jet Engines, 26 (1), 61–78. doi: http://doi.org/10.1515/tjj.2009.26.1.61
Smyrnov, A. V., Shchedrenkov, A. N., Shcherbakov, O. N., Karutskyi, A. Yu., Parafeinyk, V. P. (2015). Chyslennoe yssledovanye techenyia haza v vikhlopnikh traktakh hazoperekachyvaiushchykh ahrehatov s hazoturbynnim pryvodom na baze dvyhatelia DU80L1. Visnyk dvyhunobuduvannia, 2, 199–206.
Patlazhan, S. A., Vagner, S. A. (2015). Hydrodynamics of homogeneous and multiphase fluids in a narrow channel. Book of abstracts of XXX International Conference on «Interaction of Intense Energy Fluxes with Matter». Kabardino-Balkaria, Russia, 193.
Germider, O. V., Popov, V. N., Yushkanov, A. A. (2017). Heat transfer process in an elliptical channel. Mathematical Models and Computer Simulations, 9 (4), 521–528. doi: http://doi.org/10.1134/s2070048217040056
McGovern Ronan, K., Bulusu, K. V., Antar, M. A., Lienhard, J. H. (2012). One-Dimensional Model of an Optimal Ejector and Parametric Study of Ejector Efficiency. 25th International Conference on Efficiency, Cost, Optimization and Simulation of Energy Conversion Systems and Processes (ECOS 2012). Available at: http://hdl.handle.net/1721.1/97599
Kulyk, M. S., Kozlov, V. V., Hrekov, P. I., Kinashchuk, M. I., Yasynitskyi, E. P., Doroshenko, K. V. et. al. (2013). Pat. No. 85073 UA. Cposib orhanizatsii robochoho protsesu v kolini truboprovodu. MPK (2013.01) F16L 43/00. No. u2013 05747; declareted: 07.05.2013; published: 11.11.2013, Bul. No. 1.
Pat. No. 0002682804 RU. Nasadok k vykhlopnomu patrubku gazoturbinnogo dvigatelia dvukhdvigatelnoi silovoi ustanovki vertoleta. declareted: 21.03.2019, Bul. No. 1.
Bashynskyi, V. H. (2013). Propozytsii po znyzhenniu infrachervonoi pomitnosti vertolotu. Systemy ozbroiennia i viiskova tekhnika, 2, 6–9.
Brodov, Iu. M., Aronson, K. E., Blinkov, S. N. (2003). Teploobmenniki energeticheskikh ustanovok. Ekaterinburg: Sokrat, 964.
Copyright (c) 2020 Mykhailo Kinaschuk
This work is licensed under a Creative Commons Attribution 4.0 International License.
Our journal abides by the Creative Commons CC BY copyright rights and permissions for open access journals.
Authors, who are published in this journal, agree to the following conditions:
1. The authors reserve the right to authorship of the work and pass the first publication right of this work to the journal under the terms of a Creative Commons CC BY, which allows others to freely distribute the published research with the obligatory reference to the authors of the original work and the first publication of the work in this journal.
2. The authors have the right to conclude separate supplement agreements that relate to non-exclusive work distribution in the form in which it has been published by the journal (for example, to upload the work to the online storage of the journal or publish it as part of a monograph), provided that the reference to the first publication of the work in this journal is included.