Jet vectoring using secondary Coanda synthetic jets

In recent years, studies on the fundamental principle of thrust vectoring using jets have been conducted to realize next-generation aircraft applications. Various methods for vector control of jet flow have been proposed, such as methods that achieve control via steady, continuous jets under the Coa...

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Autores principales:	Ryota KOBAYASHI, Yuki WATANABE, Yu TAMANOI, Koichi NISHIBE, Donghyuk KANG, Kotaro SATO
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2020
Materias:	jet vectoring coanda effect synthetic jet frequency centrifugal force Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/5deec79cf6a246058c8700d349f2dbb3
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id	oai:doaj.org-article:5deec79cf6a246058c8700d349f2dbb3
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spelling	oai:doaj.org-article:5deec79cf6a246058c8700d349f2dbb32021-11-29T06:01:25ZJet vectoring using secondary Coanda synthetic jets2187-974510.1299/mej.20-00215https://doaj.org/article/5deec79cf6a246058c8700d349f2dbb32020-09-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/7/5/7_20-00215/_pdf/-char/enhttps://doaj.org/toc/2187-9745In recent years, studies on the fundamental principle of thrust vectoring using jets have been conducted to realize next-generation aircraft applications. Various methods for vector control of jet flow have been proposed, such as methods that achieve control via steady, continuous jets under the Coanda effect, steady suction flows near the Coanda surface, and synthetic jets from a neighbor slot as secondary jets. However, there are no studies on the flow direction control of jets using the secondary synthetic Coanda jet. In this study, the influence of synthetic jets near a circular cylinder on the flow characteristics of a primary jet was experimentally investigated. The main results obtained in the study were that the direction of the primary jet flow can be controlled using the secondary synthetic jet, and the degree of jet deflection depends on the frequency of the velocity oscillation for the secondary synthetic jet under an identical momentum ratio. Furthermore, when using the synthetic jet as the secondary flow, a controllable region larger than that obtained when using a steady and continuous injection or suction flow is expected. This is because secondary flow is generated using the ratio of the momentum between the primary jet and the secondary flow at the slot exit in conjunction with the dimensionless frequency of the synthetic jet based on the velocity of the primary flow at the slot exit.Ryota KOBAYASHIYuki WATANABEYu TAMANOIKoichi NISHIBEDonghyuk KANGKotaro SATOThe Japan Society of Mechanical Engineersarticlejet vectoringcoanda effectsynthetic jetfrequencycentrifugal forceMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 7, Iss 5, Pp 20-00215-20-00215 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	jet vectoring coanda effect synthetic jet frequency centrifugal force Mechanical engineering and machinery TJ1-1570
spellingShingle	jet vectoring coanda effect synthetic jet frequency centrifugal force Mechanical engineering and machinery TJ1-1570 Ryota KOBAYASHI Yuki WATANABE Yu TAMANOI Koichi NISHIBE Donghyuk KANG Kotaro SATO Jet vectoring using secondary Coanda synthetic jets
description	In recent years, studies on the fundamental principle of thrust vectoring using jets have been conducted to realize next-generation aircraft applications. Various methods for vector control of jet flow have been proposed, such as methods that achieve control via steady, continuous jets under the Coanda effect, steady suction flows near the Coanda surface, and synthetic jets from a neighbor slot as secondary jets. However, there are no studies on the flow direction control of jets using the secondary synthetic Coanda jet. In this study, the influence of synthetic jets near a circular cylinder on the flow characteristics of a primary jet was experimentally investigated. The main results obtained in the study were that the direction of the primary jet flow can be controlled using the secondary synthetic jet, and the degree of jet deflection depends on the frequency of the velocity oscillation for the secondary synthetic jet under an identical momentum ratio. Furthermore, when using the synthetic jet as the secondary flow, a controllable region larger than that obtained when using a steady and continuous injection or suction flow is expected. This is because secondary flow is generated using the ratio of the momentum between the primary jet and the secondary flow at the slot exit in conjunction with the dimensionless frequency of the synthetic jet based on the velocity of the primary flow at the slot exit.
format	article
author	Ryota KOBAYASHI Yuki WATANABE Yu TAMANOI Koichi NISHIBE Donghyuk KANG Kotaro SATO
author_facet	Ryota KOBAYASHI Yuki WATANABE Yu TAMANOI Koichi NISHIBE Donghyuk KANG Kotaro SATO
author_sort	Ryota KOBAYASHI
title	Jet vectoring using secondary Coanda synthetic jets
title_short	Jet vectoring using secondary Coanda synthetic jets
title_full	Jet vectoring using secondary Coanda synthetic jets
title_fullStr	Jet vectoring using secondary Coanda synthetic jets
title_full_unstemmed	Jet vectoring using secondary Coanda synthetic jets
title_sort	jet vectoring using secondary coanda synthetic jets
publisher	The Japan Society of Mechanical Engineers
publishDate	2020
url	https://doaj.org/article/5deec79cf6a246058c8700d349f2dbb3
work_keys_str_mv	AT ryotakobayashi jetvectoringusingsecondarycoandasyntheticjets AT yukiwatanabe jetvectoringusingsecondarycoandasyntheticjets AT yutamanoi jetvectoringusingsecondarycoandasyntheticjets AT koichinishibe jetvectoringusingsecondarycoandasyntheticjets AT donghyukkang jetvectoringusingsecondarycoandasyntheticjets AT kotarosato jetvectoringusingsecondarycoandasyntheticjets
_version_	1718407586523381760

Jet vectoring using secondary Coanda synthetic jets

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