The Influence of a Blade-Guiding Fin on the Pneumatic Performance of an Axial-Flow Cooling Fan

Shu, Hengtao; Chen, Haizhou

doi:10.3390/machines11040483

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…The framework model was chosen using the multiple reference system (MRF) paradigm [25]. The fan area's (spinning field's) speed is set to 1800rpm.…”

Section: Boundary Conditionsmentioning

confidence: 99%

Experiment and optimization of axial air-suction roller seed metering device

Zhang

Yang

Zhang

et al. 2023

Preprint

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The seed metering device construction is adjusted to improve the negative pressure at the seed metering device type hole and hence the seed suction efficiency. To explore the link between the structural parameters of the seed metering device and the negative pressure of the type hole, the Response Surface Methodology (RSM) is integrated with Computational Fluid Dynamics (CFD). Grid independence was tested to assure the solution's dependability. The internal flow field of the seed metering device was investigated, and the negative pressure at the type hole's input was 56.71 Pa. The Central Composite Design (CCD) in the response surface method was employed to generate a more perfect negative pressure at the suction of the type hole. The diameter of the air chamber channel, the draft angle of the type hole, and the number of fan blades were employed as design factors, and the major target function was the negative pressure at the entrance of the type hole. According to regression research, the optimal point occurs when the air chamber channel diameter is 59.26mm, the draft angle of the type hole is 14.28°, and the number of fan blades is 9. The objective function predicts a negative pressure of 69.41 Pa at the type hole's inlet. The Central Composite Design (CCD) in the response surface method was employed to generate a more perfect negative pressure at the suction of the type hole. The diameter of the air chamber channel, the draft angle of the type hole, and the number of fan blades were employed as design factors, and the major target function was the negative pressure at the entrance of the type hole. According to regression research, the optimal point occurs when the air chamber channel diameter is 59.26mm, the draft angle of the type hole is 14.28°, and the number of fan blades is 9. The objective function predicts a negative pressure of 69.41 Pa at the type hole's inlet.

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“…The framework model was chosen using the multiple reference system (MRF) paradigm [25]. The fan area's (spinning field's) speed is set to 1800rpm.…”

Section: Boundary Conditionsmentioning

confidence: 99%

Experiment and optimization of axial air-suction roller seed metering device

Zhang

Yang

Zhang

et al. 2023

Preprint

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Optimal Design and Performance Analysis of Air-Cooled Radiator Substrate and Fin Structure for LED Headlights

何

2024

MOS

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Numerical Analysis of Bionic Inlet Nozzle Effects on Squirrel-Cage Fan Flow Characteristics

Zhou,

Wang,

et al. 2024

Machines

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In order to improve the inlet distortion of the squirrel-cage fan, this study proposes a parametric design method for the bionic structure of the inlet nozzle generatrix, which is spliced by multiple sinusoidal curves, based on the bionic structure of the humpback whale flipper leading-edge nodule. The geometric shape of the bionic generatrix is controlled by three parameters: the number of segments n, the amplitude ratio Tm, and the amplitude of the last curve An. These parameters are optimized through orthogonal tests and numerical simulations, with the aim of improving the fan’s aerodynamic efficiency. Based on the selected solution, a comparative analysis is conducted to examine the impact of cylindrical, conical, and bionic inlet nozzles on inlet distortion and flow evolution within the centrifugal fan. Numerical calculations demonstrate that the fan’s maximum total efficiency, with a bionic inlet nozzle designed in a rational manner, is 5.46% higher than that of the original fan and is 2.01% higher than that of the fan with a conical inlet nozzle. The proposed bionic structure can create a buffer zone at the fan’s inlet, thereby reducing the region of high vorticity caused by the separated flow. Consequently, this improvement leads to enhanced uniformity at the impeller’s inlet. Furthermore, the design method proposed in this study for the inlet nozzle’s bionic structure effectively regulates the airflow angle near the impeller shroud, thereby enhancing the fan’s inlet distortion and improving its overall aerodynamic performance.

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The Influence of a Blade-Guiding Fin on the Pneumatic Performance of an Axial-Flow Cooling Fan

Cited by 3 publications

References 16 publications

Experiment and optimization of axial air-suction roller seed metering device

Experiment and optimization of axial air-suction roller seed metering device

Optimal Design and Performance Analysis of Air-Cooled Radiator Substrate and Fin Structure for LED Headlights

Numerical Analysis of Bionic Inlet Nozzle Effects on Squirrel-Cage Fan Flow Characteristics

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