Application of Airfoil Impeller for Enhancement of Aerodynamic Performance of High Speed Centrifugal Fan

Park, Kyung Hyun; Park, Chang Hwan

doi:10.3795/ksme-b.2016.40.5.321

Cited by 4 publications

(3 citation statements)

References 7 publications

(6 reference statements)

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“…The simulation result shows that the stroke-plane angle has a high positive correlation with efficiency. Park and Chang [29] argued that the performance of airfoil blades is generally better than that of single-arc blades. The reason is that the flow separation between the impeller and the volute of airfoil blade is suppressed, thereby improving the performance of the fan.…”

Section: Introductionmentioning

confidence: 99%

Blade Optimization of Multi-Blade Centrifugal Fan: Experimental and simulation study

Zhao,

Li,

Zheng

et al. 2023

Preprint

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To overcome the technical challenges of the multi-blade centrifugal fan, such as low efficiency and insufficient total pressure, the single-arc blades of the fan were optimized and replaced in this study. The flow field of the multi-blade centrifugal fan with a single-arc blade and an airfoil blade was simulated and compared using Computational Fluid Dynamics (CFD). Under steady-state conditions, the total pressure, velocity field distribution, and aerodynamic performance of a multi-blade centrifugal fan were analyzed. The numerical results show that the presence of vortices, secondary flows, and boundary layer separation in the flow channel of a single-arc multi-blade centrifugal fan. Combined with the lift-to-drag ratio theory of aerodynamic airfoil, four different airfoil blades were selected for the multi-blade centrifugal fan. It can be found that the lift-to-drag ratio of the airfoil was positively correlated with fan efficiency. Furthermore, the airfoil blade can suppress the above phenomena in the flow channel and enhance the flowability of the blade flow channel. Verified experiments on airfoil effects showed a 3%-7% efficiency improvement in the multi-blade centrifugal fan compared to the single-arc blade. Additionally, the airfoil fan exhibited substantial enhancements in total pressure and power. These findings hold significance for guiding optimal fan design.

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Section: Introductionmentioning

confidence: 99%

Blade Optimization of Multi-Blade Centrifugal Fan: Experimental and simulation study

Zhao,

Li,

Zheng

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Lee et al [3] analyzed the effects of the bending length ( /c) and the bending angle (θ) in the leading-edge direction on the impeller trailing edge of the centrifugal fan as design variables by numerical simulation. Park et al [4] reviewed and studied the application of an airfoil impeller to improve the aerodynamic performance of a centrifugal fan in high-speed rotation. It was confirmed that the application of an airfoil impeller greatly reduced the flow separation that occurs on the blade pressure and diffuser pressure surfaces compared with the existing blade shape.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of a Plenum Fan with Three-Dimensional Blades

Lee¹,

Park²,

Bang³

et al. 2020

Applied Sciences

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We successfully designed an optimized plenum fan with a three-dimensional, smooth, curved blade. The optimized model revealed that the static pressure in the channel had been increased uniformly and stably, and the flow separation at the leading edge was significantly reduced. According to simulations, the three-dimensional blade stabilized the fluid flow, and the flow friction was reduced by suppressing the flow separation as much as possible so that both the static pressure and the static efficiency were clearly improved in comparison with those of the original model. As a result, the static efficiency was improved by 6.3% compared with that of the original model.

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“…Lee et al [3] analyzed the effects of the bending length (ℓ/c) and the bending angle ( ) in the leading-edge direction on the impeller trailing edge of the centrifugal fan as design variables by numerical simulation. Park et al [4] reviewed and studied the application of an airfoil impeller to improve the aerodynamic performance of a centrifugal fan in high-speed rotation. It was confirmed that the application of an airfoil impeller greatly reduced the flow separation that occurs on the blade pressure and diffuser pressure surfaces compared with the existing blade shape.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of a Plenum Fan with Three-Dimensional Blades

Lee¹,

Park²,

Bang³

et al. 2020

Preprint

View full text Add to dashboard Cite

We successfully designed an optimized plenum fan with a three-dimensional, smooth, curved blade. The optimized model revealed that the static pressure in the channel had been increased uniformly and stably, and the flow separation at the leading edge was significantly reduced. To conclude, the three-dimensional blade stabilized the fluid flow, and the flow friction was reduced by suppressing the flow separation as much as possible so that both the static pressure and the static efficiency were clearly improved in comparison with those of the original model. The static efficiency, as a result, was improved by 6% compared with that of the original model.

show abstract

Application of Airfoil Impeller for Enhancement of Aerodynamic Performance of High Speed Centrifugal Fan

Cited by 4 publications

References 7 publications

Blade Optimization of Multi-Blade Centrifugal Fan: Experimental and simulation study

Blade Optimization of Multi-Blade Centrifugal Fan: Experimental and simulation study

Optimal Design of a Plenum Fan with Three-Dimensional Blades

Optimal Design of a Plenum Fan with Three-Dimensional Blades

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