Inlet Guide Vane Wakes Including Rotor Effects

Johnston, Robert; Fleeter, Sanford

doi:10.1006/jfls.2000.0339

Cited by 8 publications

(2 citation statements)

References 13 publications

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“…Cui [4] and Oro et al [5] focused on the unsteady flow for centrifugal compressors with inlet guide vanes, and analyzed the unsteady flow structures, periodic interaction, and wake transport. Johnston and Fleeter [6] performed experiments on pressure and velocity fields of wake-induced by IGVs for three IGV-rotor axial distances. The results showed that higher harmonics of the vertical gust component for IGV wakes decayed at a uniform rate due to viscous diffusion.…”

Section: Introductionmentioning

confidence: 99%

Influence of Prewhirl Angle and Axial Distance on Energy Performance and Pressure Fluctuation for a Centrifugal Pump with Inlet Guide Vanes

et al. 2017

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Abstract:The energy performance and pressure fluctuations in a centrifugal pump with inlet guide vanes (IGVs) are investigated experimentally and numerically in a prewhirl angle range of −24 • to 24 • and in an axial distance range of 280 mm, 380 mm, and 460 mm. The reliability and accuracy of the numerical method are validated by the satisfactory agreement between the experimental data and numerical results. Prewhirl regulation with IGVs can significantly increase the energy performance and broaden the efficient operation range for the centrifugal pump due to the improvement of flow pattern at the impeller inlet. The prewhirl angle has an obvious impact on pump energy performance, and the maximum amplitudes of pressure fluctuations on the blade leading edge of the pressure and suction sides decrease by 69% and 89%, respectively. The axial distance has a slight impact on pump energy performance, but the maximum amplitudes of pressure fluctuations drop by 35.4% on the blade leading edge of pressure side when the axial distance extends from 280 mm to 460 mm.

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Section: Introductionmentioning

confidence: 99%

Influence of Prewhirl Angle and Axial Distance on Energy Performance and Pressure Fluctuation for a Centrifugal Pump with Inlet Guide Vanes

et al. 2017

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“…With the advantage of convenient installation and practical effect, IGVs used in centrifugal compressors have OPEN ACCESS been sufficiently investigated for several decades. The literature on IGV investigations for centrifugal compressors mainly falls into the following categories: effects of IGVs on compressors' energy performances [1][2][3][4][5][6][7][8][9][10][11][12]; design methods and structure parameters of IGVs [2][3][4][5]11]; unsteady interaction between the stationary IGVs and the rotational impeller [6][7][8][9][10][11][12]; and common failure modes of IGVs [13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Prewhirl Regulation by Inlet Guide Vanes on Cavitation Performance of a Centrifugal Pump

et al. 2014

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Abstract:The influence of prewhirl regulation by inlet guide vanes (IGVs) on a centrifugal pump performance is investigated experimentally and numerically. The experimental results show that IGVs can obviously change the head and increase the efficiency of the tested centrifugal pump over a wide range of flow rates. Although the cavitation performance is degraded, the variation of the cavitation critical point is less than 0.5 m. Movement of the computed three-dimensional streamlines in suction pipe and impeller are analyzed in order to reveal the mechanism how the IGVs realize the prewhirl regulation. The calculated results show that the influence of IGVs on the cavitation performance of centrifugal pump is limited by a maximum total pressure drop of 1777 Pa, about 7.6% of the total pressure at the suction pipe inlet for a prewhirl angle of 24°.

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Cavitation performance and flow characteristic in a centrifugal pump with inlet guide vanes

Tan

Zha

Cao

et al. 2015

IOP Conf. Ser.: Mater. Sci. Eng.

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Inlet Guide Vane Wakes Including Rotor Effects

Cited by 8 publications

References 13 publications

Influence of Prewhirl Angle and Axial Distance on Energy Performance and Pressure Fluctuation for a Centrifugal Pump with Inlet Guide Vanes

Influence of Prewhirl Angle and Axial Distance on Energy Performance and Pressure Fluctuation for a Centrifugal Pump with Inlet Guide Vanes

Influence of Prewhirl Regulation by Inlet Guide Vanes on Cavitation Performance of a Centrifugal Pump

Cavitation performance and flow characteristic in a centrifugal pump with inlet guide vanes

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