Experimental and numerical study of the sweep effect on three-dimensional flow downstream of axial flow fans

Hurault, Jérémy; Kouidri, S.; Bakir, Farid; Rey, Robert

doi:10.1016/j.flowmeasinst.2010.02.003

Cited by 61 publications

(40 citation statements)

References 9 publications

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“…In order to verify the design reliability and the prediction accuracy of the present method, the present method is applied to the fan model by Hurault [8], which is designed with the tip diameter of 380 mm, the hub-to-tip ratio of 0.46 and the RPM of 2700. Fig.…”

Section: Resultsmentioning

confidence: 99%

Energy-Saving technology of axial flow fan used in air-conditioning system

Lee¹,

Kim²,

Yeo³

2017

SGCE

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The present study provides an energy-saving design method of axial flow fan used in air-conditioning system and verifies its design results through comparison with test results. The present design method employs combined vortex design concept in constructing three dimensional fan blades, and the performance analysis of designed fan is made by the through-flow method with pressure loss and flow deviation distribution models along swept blade height. For the verification of the present design method, a new fan model is designed and manufactured, and its performances are predicted and compared with actual test results. The comparisons between the present prediction and the test results show very good agreements in the aspects of static pressure, power and efficiency. Furthermore, the present design method is shown to give less power consumption than conventional fan model. 

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Section: Resultsmentioning

confidence: 99%

Energy-Saving technology of axial flow fan used in air-conditioning system

Lee¹,

Kim²,

Yeo³

2017

SGCE

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“…Table 5 shows the mean velocity at the four different intercept planes shown in Figure 5(a). The increased velocity rate, r, was calculated according to equation (5) Table 5 shows that when the small pits were arranged on the impeller, the mean velocity of the air increased at most positions for the bionic models. This is an ideal situation considering that it accelerated the air flow in the impeller.…”

Section: Discussionmentioning

confidence: 99%

Improved flow performance of a centrifugal compressor based on pit formation on the notum of the whirligig beetle (Gyrinidae Latreille)

Tian

Jin

et al. 2015

Advances in Mechanical Engineering

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Many studies have shown that bionic forms reduce drag through the control fluid medium. In this study, the evenly aligned pits of the whirligig beetle (Gyrinidae Latreille) notum were selected as the bionic form to be studied. They were used in centrifugal compressor impellers, called bionic centrifugal compressors, and the flow characteristics were simulated and compared to the prototype compressor. The simulation results show that compared to the prototype compressor, the pressure drag of bionic centrifugal compressors was reduced dramatically, while the pressure ratio was significantly improved. The pressure drag decreased by 19.24%, while the compression ratio increased by 9.8%. The bionic form of the blade delayed the boundary layer separation of the impeller suction surface, reducing the turbulent kinetic energy loss and improving internal air flow. The effect of drag reduction was shown to have a close relationship with the dimple size and bionic surface area; the greater the area, the better the drag reduction effect. However, there should exist an optimal bionic area, which could be determined by considering the flow velocity inside the impeller.

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“…The blades are stacked on the trailing edge. The blades are finally swept forward in order to benefit from lower tonal noise as suggested by several studies [1][2][3][4]. The forward sweep may also increase or decrease the overall performance, depending on the blade loading distribution, as reported in Refs.…”

Section: Geometry Of the Two Fansmentioning

confidence: 99%

“…The forward sweep may also increase or decrease the overall performance, depending on the blade loading distribution, as reported in Refs. [3,4].…”

Section: Geometry Of the Two Fansmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study of blade thickness effects on the overall and local performances of a Controlled Vortex Designed axial-flow fan

Sarraf

Nouri

Ravelet

et al. 2011

Experimental Thermal and Fluid Science

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Experimental and numerical study of the sweep effect on three-dimensional flow downstream of axial flow fans

Cited by 61 publications

References 9 publications

Energy-Saving technology of axial flow fan used in air-conditioning system

Energy-Saving technology of axial flow fan used in air-conditioning system

Improved flow performance of a centrifugal compressor based on pit formation on the notum of the whirligig beetle (Gyrinidae Latreille)

Experimental study of blade thickness effects on the overall and local performances of a Controlled Vortex Designed axial-flow fan

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