Test designing centrifugal compressor wheels according to a stated velocity distribution

Galerkin, Yu. B.; Zuev, A. V.; Seleznev, K. P.; Strizhak, L. Ya.

doi:10.1007/bf01162833

Cited by 2 publications

(3 citation statements)

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“…It is assumed that the relative velocity is the average of relative velocities on pressure and suction surface. According to the reference [9], the relative velocity curve is divided into three sections of smooth connection curves, and the functions of the three curves are quadratic, cubic, and quadratic respectively. Therefore, the four control points are the starting point, ending point and the two junctions of the three.…”

Section: Optimization Proceduresmentioning

confidence: 99%

“…Then the impeller parameters according to the design requirements are calculated. The boundary layer momentum thickness is obtained by Truckenbrodt equation, and the required parameters in the equation are from the velocity distribution curve in reference [9]. Then the reasonable velocity curve parameters are selected according to the minimum boundary layer momentum thickness.…”

Section: Introductionmentioning

confidence: 99%

“…The results show that the secondary flow is improved under the linear load, and the bilinear load can reduce the velocity gradient, then the boundary layer separation and growth is inhibited. Galerkin [9] studied the centrifugal impeller performance by given three typical velocity distributions in experiment. The result shows that the impeller can obtain the best performance using the C velocity distribution.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of Blade Profile of a Plenum Fan

Lin¹,

Dou²,

Wei³

et al. 2016

International Journal of Fluid Machinery and Systems

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A method of optimization design for the blade profile of a centrifugal impeller by controlling velocity distribution is presented, and a plenum fan is successfully designed. This method is based on the inner flow calculation inside the centrifugal impeller, and is related to the distribution of relative velocity. The results show that after optimization, the boundary layer separation on the suction surface has been inhibited and the stability of plenum fan is improved. The flow at the impeller outlet is also studied, and the jet-wake pattern at the impeller outlet is improved obviously by optimization. The calculation result shows that the static pressure and static pressure efficiency can be increased by 15.4% and 21.4% respectively.

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Section: Optimization Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of Blade Profile of a Plenum Fan

Lin¹,

Dou²,

Wei³

et al. 2016

International Journal of Fluid Machinery and Systems

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An Improved Passage-Flow Turning Model for Forward-Curved Blades of Squirrel-Cage Fan

Jiang,

Yang,

Wang

et al. 2024

Journal of Turbomachinery

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In the present study, an improved passage-flow turning model (IPTM) was proposed to design high-performance forward-curved blades for squirrel-cage fans. The flow separation in blade passages and the corresponding fan performance were compared between IPTM and traditional methods through computational fluid dynamics (CFD). The results show that the blade inlet angle requires correction based on the zero-incidence design, or the passage mainstream will separate from the blade pressure surface, which is detrimental to the fan performance. It is also found that the blade shape with 2nd-order smoothness owns the thinnest separation and highest efficiency when other design parameters are the same. After taking these two points into consideration, the blades designed by IPTM performs significantly better than the traditional blades with the same inlet and outlet angle. According to CFD results, the optimal value of the turning radius R¯T and the decelerating factor of the leading-half blade e was suggested. The designed blade achieves high pressure when these two parameters satisfy R¯T=−0.185ε+0.29175, while achieves high efficiency when they satisfy R¯T=−0.31ε+0.4425. In order to validate the advantages of IPTM, the optimal blade designed by IPTM was manufactured and measured. Results show that the maximum increase in fan pressure and efficiency were over 10% and 6 percentages, respectively.

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Test designing centrifugal compressor wheels according to a stated velocity distribution

Cited by 2 publications

References 0 publications

Optimization of Blade Profile of a Plenum Fan

Optimization of Blade Profile of a Plenum Fan

An Improved Passage-Flow Turning Model for Forward-Curved Blades of Squirrel-Cage Fan

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