Flow simulation in a coaxial fan with boundary layer control

The development and improvement of turboprop engines are one of the important tasks of modern aircraft engine building. Propeller performance significantly affects the overall efficiency of turboprop engines. An important issue is to increase the trust of the propeller or propfan. In this matter, pr...

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Autores principales:	Вячеслав Юрійович Усенко, Катерина Вікторівн Балалаєва, Михайло Михайлович Мітрахович
Formato:	article
Lenguaje:	EN RU UK
Publicado:	National Aerospace University «Kharkiv Aviation Institute» 2021
Materias:	співвісний гвинтовентилятор моделювання течії управління примежовим шаром видув повітря реактивна тяга чисельний експеримент Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/c6b9365289e94274b0f27cd175aa7b0c
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spelling	oai:doaj.org-article:c6b9365289e94274b0f27cd175aa7b0c2021-11-09T07:53:09ZFlow simulation in a coaxial fan with boundary layer control1727-73372663-221710.32620/aktt.2021.4sup1.05https://doaj.org/article/c6b9365289e94274b0f27cd175aa7b0c2021-08-01T00:00:00Zhttp://nti.khai.edu/ojs/index.php/aktt/article/view/1450https://doaj.org/toc/1727-7337https://doaj.org/toc/2663-2217The development and improvement of turboprop engines are one of the important tasks of modern aircraft engine building. Propeller performance significantly affects the overall efficiency of turboprop engines. An important issue is to increase the trust of the propeller or propfan. In this matter, promising energy methods for increasing lift deserve special attention. Energy methods for increasing the lift force are based on the use of additional energy from the power plant to improve the flow around the blade and increase its bearing properties. The purpose of this work is to assess the influence of the boundary layer control on the blades of a coaxial propfan on the thrust. A coaxial propfan was chosen as the object of research. The rotor fan consists of two rows of blades, the first row has eight blades, the second - six. The peripheral diameter of the blades of the propfan is the same and amounts to 4.5 m. The cruise mode of operation was selected for the study. Modeling the flow in a coaxial propfan was based on the solution of the Navier-Stokes system of equations, which was closed by the SST Gamma Theta Transition model of turbulent viscosity. The computational grid consisted of 20 million cells, type-block, structured and unstructured with an adaptation of the boundary layer. In this study, an active boundary layer control method was chosen. The boundary layer was controlled only on the blades of the first row of the propfan. In the peripheral region of the blade, an additional mass of air was blown out through the slot, at a distance of 70 % of the profile chord. Blowing out a thin jet near the blade wall to increase the flow energy serves as an effective means of controlling the flow separation and increasing the bearing capacity of the propfan blade. Analysis of the simulation of the flow in a propfan with control of the boundary layer showed that the addition of energy to the boundary layer contributes to the filling of the velocity profile in the boundary layer, leads to a decrease in resistance and an increase in the thrust of the propfan. The results of the study showed that for the studied scheme of blowing out an additional mass of air on the propeller blades, it is possible to increase the thrust force up to 100 N. In the future, it is planned to investigate other schemes for controlling the boundary layer to increase the thrust of the coaxial propfan.Вячеслав Юрійович УсенкоКатерина Вікторівн БалалаєваМихайло Михайлович МітраховичNational Aerospace University «Kharkiv Aviation Institute»articleспіввісний гвинтовентилятормоделювання течіїуправління примежовим шаромвидув повітряреактивна тягачисельний експериментMotor vehicles. Aeronautics. AstronauticsTL1-4050ENRUUKАвіаційно-космічна техніка та технологія, Vol 0, Iss 4sup1, Pp 35-40 (2021)
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	співвісний гвинтовентилятор моделювання течії управління примежовим шаром видув повітря реактивна тяга чисельний експеримент Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	співвісний гвинтовентилятор моделювання течії управління примежовим шаром видув повітря реактивна тяга чисельний експеримент Motor vehicles. Aeronautics. Astronautics TL1-4050 Вячеслав Юрійович Усенко Катерина Вікторівн Балалаєва Михайло Михайлович Мітрахович Flow simulation in a coaxial fan with boundary layer control
description	The development and improvement of turboprop engines are one of the important tasks of modern aircraft engine building. Propeller performance significantly affects the overall efficiency of turboprop engines. An important issue is to increase the trust of the propeller or propfan. In this matter, promising energy methods for increasing lift deserve special attention. Energy methods for increasing the lift force are based on the use of additional energy from the power plant to improve the flow around the blade and increase its bearing properties. The purpose of this work is to assess the influence of the boundary layer control on the blades of a coaxial propfan on the thrust. A coaxial propfan was chosen as the object of research. The rotor fan consists of two rows of blades, the first row has eight blades, the second - six. The peripheral diameter of the blades of the propfan is the same and amounts to 4.5 m. The cruise mode of operation was selected for the study. Modeling the flow in a coaxial propfan was based on the solution of the Navier-Stokes system of equations, which was closed by the SST Gamma Theta Transition model of turbulent viscosity. The computational grid consisted of 20 million cells, type-block, structured and unstructured with an adaptation of the boundary layer. In this study, an active boundary layer control method was chosen. The boundary layer was controlled only on the blades of the first row of the propfan. In the peripheral region of the blade, an additional mass of air was blown out through the slot, at a distance of 70 % of the profile chord. Blowing out a thin jet near the blade wall to increase the flow energy serves as an effective means of controlling the flow separation and increasing the bearing capacity of the propfan blade. Analysis of the simulation of the flow in a propfan with control of the boundary layer showed that the addition of energy to the boundary layer contributes to the filling of the velocity profile in the boundary layer, leads to a decrease in resistance and an increase in the thrust of the propfan. The results of the study showed that for the studied scheme of blowing out an additional mass of air on the propeller blades, it is possible to increase the thrust force up to 100 N. In the future, it is planned to investigate other schemes for controlling the boundary layer to increase the thrust of the coaxial propfan.
format	article
author	Вячеслав Юрійович Усенко Катерина Вікторівн Балалаєва Михайло Михайлович Мітрахович
author_facet	Вячеслав Юрійович Усенко Катерина Вікторівн Балалаєва Михайло Михайлович Мітрахович
author_sort	Вячеслав Юрійович Усенко
title	Flow simulation in a coaxial fan with boundary layer control
title_short	Flow simulation in a coaxial fan with boundary layer control
title_full	Flow simulation in a coaxial fan with boundary layer control
title_fullStr	Flow simulation in a coaxial fan with boundary layer control
title_full_unstemmed	Flow simulation in a coaxial fan with boundary layer control
title_sort	flow simulation in a coaxial fan with boundary layer control
publisher	National Aerospace University «Kharkiv Aviation Institute»
publishDate	2021
url	https://doaj.org/article/c6b9365289e94274b0f27cd175aa7b0c
work_keys_str_mv	AT vâčeslavûríjovičusenko flowsimulationinacoaxialfanwithboundarylayercontrol AT katerinavíktorívnbalalaêva flowsimulationinacoaxialfanwithboundarylayercontrol AT mihajlomihajlovičmítrahovič flowsimulationinacoaxialfanwithboundarylayercontrol
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Flow simulation in a coaxial fan with boundary layer control

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