Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental Investigations
Wall jets are applied to reduce flow separation and recirculation of the airflow entering the inner space of a laboratory fume hood through its front opening. The flow separation in the hood was further reduced by introducing a self-induced oscillatory motion using fluidic oscillators. The design of...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/6/8/279 |
| _version_ | 1797523940540678144 |
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| author | Juergen Liebsch Christian Oliver Paschereit |
| author_facet | Juergen Liebsch Christian Oliver Paschereit |
| author_sort | Juergen Liebsch |
| collection | DOAJ |
| description | Wall jets are applied to reduce flow separation and recirculation of the airflow entering the inner space of a laboratory fume hood through its front opening. The flow separation in the hood was further reduced by introducing a self-induced oscillatory motion using fluidic oscillators. The design of the oscillators integrated in the predetermined contour are based on numerical simulations. The effect of the steady and unsteady wall jet was investigated experimentally using flow visualization, particle image velocimetry (PIV), and containment measurements. The oscillatory wall-jet led to reduction of flow separation and recirculation even at lower injection volume flows. In consequence, the usage of fluidic oscillators for a laboratory fume hood increases the energy efficiency of the system without reducing the safety of the laboratory fume hood. |
| first_indexed | 2024-03-10T08:50:16Z |
| format | Article |
| id | doaj.art-fb2be86d9a6c4b7a9441121dfbe727b6 |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-03-10T08:50:16Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-fb2be86d9a6c4b7a9441121dfbe727b62023-11-22T07:36:53ZengMDPI AGFluids2311-55212021-08-016827910.3390/fluids6080279Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental InvestigationsJuergen Liebsch0Christian Oliver Paschereit1Chair of Fluid Dynamics—Hermann-Föttinger-Institute, Technical University Berlin, Müller-Breslau-Str. 8, 10623 Berlin, GermanyChair of Fluid Dynamics—Hermann-Föttinger-Institute, Technical University Berlin, Müller-Breslau-Str. 8, 10623 Berlin, GermanyWall jets are applied to reduce flow separation and recirculation of the airflow entering the inner space of a laboratory fume hood through its front opening. The flow separation in the hood was further reduced by introducing a self-induced oscillatory motion using fluidic oscillators. The design of the oscillators integrated in the predetermined contour are based on numerical simulations. The effect of the steady and unsteady wall jet was investigated experimentally using flow visualization, particle image velocimetry (PIV), and containment measurements. The oscillatory wall-jet led to reduction of flow separation and recirculation even at lower injection volume flows. In consequence, the usage of fluidic oscillators for a laboratory fume hood increases the energy efficiency of the system without reducing the safety of the laboratory fume hood.https://www.mdpi.com/2311-5521/6/8/279fluidic oscillatoroscillating jetwall jetjetflow controlfume hood |
| spellingShingle | Juergen Liebsch Christian Oliver Paschereit Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental Investigations Fluids fluidic oscillator oscillating jet wall jet jet flow control fume hood |
| title | Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental Investigations |
| title_full | Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental Investigations |
| title_fullStr | Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental Investigations |
| title_full_unstemmed | Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental Investigations |
| title_short | Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental Investigations |
| title_sort | oscillating wall jets for active flow control in a laboratory fume hood experimental investigations |
| topic | fluidic oscillator oscillating jet wall jet jet flow control fume hood |
| url | https://www.mdpi.com/2311-5521/6/8/279 |
| work_keys_str_mv | AT juergenliebsch oscillatingwalljetsforactiveflowcontrolinalaboratoryfumehoodexperimentalinvestigations AT christianoliverpaschereit oscillatingwalljetsforactiveflowcontrolinalaboratoryfumehoodexperimentalinvestigations |