A Study on Swirling Jets Flow Controlled by Two Tandem Bodies

This study presents the effects of using two centerbodies arranged in tandem on the flow and velocity properties of swirling jets. The centerbodies are installed concentrically downstream of the jets to modify the wake. Smoke flow visualization was employed to illustrate the flow behaviors, while th...

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Main Authors: Le, M.D., Jufar, S.R., Duong, D.N., Nguyen, T.P.Q.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.33097 /
Published: MDPI 2022
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130621130&doi=10.3390%2fen15103590&partnerID=40&md5=3f0b7de68f0c339fc709e7967963302b
http://eprints.utp.edu.my/33097/
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spelling utp-eprints.330972022-06-13T02:29:21Z A Study on Swirling Jets Flow Controlled by Two Tandem Bodies Le, M.D. Jufar, S.R. Duong, D.N. Nguyen, T.P.Q. This study presents the effects of using two centerbodies arranged in tandem on the flow and velocity properties of swirling jets. The centerbodies are installed concentrically downstream of the jets to modify the wake. Smoke flow visualization was employed to illustrate the flow behaviors, while the particle image velocimetry technique was utilized to investigate the velocity fields, turbulent properties, vorticities, and Lagrangian time and length scales. The toroidal recirculation and vortex shedding are found near the field using one centerbody. The recirculation zone is evolved from the edge of the centerbody, while the vortex shedding is formed by the interaction between the central and the annular jets. Since two centerbodies are installed, two four-way saddles are located near the rim of the upstream centerbody to associate two pairs of vortices. A large momentum of the annular jet dominates the flow field; therefore, the central jet forms dual-rotating vortices at downstream centerbody. The turbulent intensity and vorticity along the central axis in the case of two centerbodies are extremely lower than those in the case of one centerbody. Large turbulent intensity and vorticity are located around the shear layers of jets. This promotes a better mixing efficiency of the swirling jets. © 2022 by the authors. Licensee MDPI, Basel, Switzerland. MDPI 2022 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130621130&doi=10.3390%2fen15103590&partnerID=40&md5=3f0b7de68f0c339fc709e7967963302b Le, M.D. and Jufar, S.R. and Duong, D.N. and Nguyen, T.P.Q. (2022) A Study on Swirling Jets Flow Controlled by Two Tandem Bodies. Energies, 15 (10). http://eprints.utp.edu.my/33097/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description This study presents the effects of using two centerbodies arranged in tandem on the flow and velocity properties of swirling jets. The centerbodies are installed concentrically downstream of the jets to modify the wake. Smoke flow visualization was employed to illustrate the flow behaviors, while the particle image velocimetry technique was utilized to investigate the velocity fields, turbulent properties, vorticities, and Lagrangian time and length scales. The toroidal recirculation and vortex shedding are found near the field using one centerbody. The recirculation zone is evolved from the edge of the centerbody, while the vortex shedding is formed by the interaction between the central and the annular jets. Since two centerbodies are installed, two four-way saddles are located near the rim of the upstream centerbody to associate two pairs of vortices. A large momentum of the annular jet dominates the flow field; therefore, the central jet forms dual-rotating vortices at downstream centerbody. The turbulent intensity and vorticity along the central axis in the case of two centerbodies are extremely lower than those in the case of one centerbody. Large turbulent intensity and vorticity are located around the shear layers of jets. This promotes a better mixing efficiency of the swirling jets. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
format Article
author Le, M.D.
Jufar, S.R.
Duong, D.N.
Nguyen, T.P.Q.
spellingShingle Le, M.D.
Jufar, S.R.
Duong, D.N.
Nguyen, T.P.Q.
A Study on Swirling Jets Flow Controlled by Two Tandem Bodies
author_sort Le, M.D.
title A Study on Swirling Jets Flow Controlled by Two Tandem Bodies
title_short A Study on Swirling Jets Flow Controlled by Two Tandem Bodies
title_full A Study on Swirling Jets Flow Controlled by Two Tandem Bodies
title_fullStr A Study on Swirling Jets Flow Controlled by Two Tandem Bodies
title_full_unstemmed A Study on Swirling Jets Flow Controlled by Two Tandem Bodies
title_sort study on swirling jets flow controlled by two tandem bodies
publisher MDPI
publishDate 2022
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130621130&doi=10.3390%2fen15103590&partnerID=40&md5=3f0b7de68f0c339fc709e7967963302b
http://eprints.utp.edu.my/33097/
_version_ 1741197802391732224
score 11.62408

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