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Main Title: Oscillating Wall Jets for Active Flow Control in a Laboratory Fume Hood—Experimental Investigations
Author(s): Liebsch, Juergen
Paschereit, Christian Oliver
Type: Article
Language Code: en
Abstract: 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.
Issue Date: 10-Aug-2021
Date Available: 14-Sep-2021
DDC Class: 530 Physik
Subject(s): fluidic oscillator
oscillating jet
wall jet
flow control
fume hood
laboratory fume hood
containment capability
flow visualization
Journal Title: Fluids
Publisher: MDPI
Publisher Place: Basel
Volume: 6
Issue: 8
Article Number: 279
Publisher DOI: 10.3390/fluids6080279
EISSN: 2311-5521
Appears in Collections:FG Experimentelle Strömungsmechanik » Publications

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