Abstract
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°, 45° and 60°) 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° at higher cavity lengths owing to the interaction between the vortex in the resonator and intake flow.
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°, 45° and 60°) 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° at higher cavity lengths owing to the interaction between the vortex in the resonator and intake flow.
| Translated title of the contribution | Effect of the Shape of a Guide Grill Above a Resonance Type Sound Absorbing Panel on Intake Flow into a Resonator |
|---|---|
| Original language | Korean |
| Pages (from-to) | 182-188 |
| Number of pages | 7 |
| Journal | 한국생산제조학회지 |
| Volume | 25 |
| Issue number | 3 |
| DOIs | |
| State | Published - Jun 2016 |