Effect of the Shape of a Guide Grill Above a Resonance Type Sound Absorbing Panel on Intake Flow into a Resonator Article Swipe

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Hyunwoo Bae , Jaeyoung Sung , Dong Hoon Lee ·

YOU? · · 2016 · Open Access · · DOI: https://doi.org/10.7735/ksmte.2016.25.3.182

This study investigates cavity flows through a guide grill above a resonator. Vortex distributions and intake flows are simulated for various shapes of the guide grill. The flows are assumed to be compressible, unsteady, and turbulent. Numerical simulations are conducted using a large eddy simulation (LES) model. To analyze the effect of the guide grill shape, three cavity lengths (0.2H, 0.6H, and 1.0H) and cavity angles ($30^{\circ}$, $45^{\circ}$ and $60^{\circ}$) are considered based on resonator height (H). The results show that the vortex generated in the resonator by cavity flow increases with cavity length. Thus, the intake flow is minimum at the smallest cavity length and angle. However, when cavity length is equal to resonator height, the intake flow decreases. The maximum intake flow occurs at a cavity angle $45^{\circ}$ at higher cavity lengths owing to the interaction between the vortex in the resonator and intake flow.

Related Topics

Large Eddy Simulation

Materials Science

Acoustics

Concepts

Resonator Vortex Flow (mathematics) Mechanics Turbulence Physics Resonance (particle physics) Optics Large eddy simulation Materials science Acoustics Atomic physics

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Type: article
Language: en
Landing Page: https://doi.org/10.7735/ksmte.2016.25.3.182
PDF: http://society.kisti.re.kr/sv/SV_svpsbs03V.do?method=download&cn1=JAKO201620853199424
OA Status: diamond
References: 3
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OpenAlex ID: https://openalex.org/W2494512160

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DOI: https://doi.org/10.7735/ksmte.2016.25.3.182

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Title: Effect of the Shape of a Guide Grill Above a Resonance Type Sound Absorbing Panel on Intake Flow into a Resonator

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Type: article

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Language: en

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Publication year: 2016

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Publication date: 2016-06-15

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Authors: Hyunwoo Bae, Jaeyoung Sung, Dong Hoon Lee

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Landing page: https://doi.org/10.7735/ksmte.2016.25.3.182

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PDF URL: https://society.kisti.re.kr/sv/SV_svpsbs03V.do?method=download&cn1=JAKO201620853199424

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Concepts: Resonator, Vortex, Flow (mathematics), Mechanics, Turbulence, Physics, Resonance (particle physics), Optics, Large eddy simulation, Materials science, Acoustics, Atomic physics

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